/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */


/*
  NOTES:
  Some of the number class uses the system functions strtol(), strtoll()...
  To avoid patching the end \0 or copying the buffer unnecessary, all calls
  to system functions are wrapped to a String object that adds the end null
  if it only if it isn't there.
  This adds some overhead when assigning numbers from strings but makes
  everything simpler.
  */

/*****************************************************************************
** This file implements classes defined in field.h
*****************************************************************************/

#ifdef __GNUC__
#pragma implementation				// gcc: Class implementation
#endif

#include "mysql_priv.h"
#include "sql_select.h"
#include <m_ctype.h>
#include <errno.h>
#include <assert.h>
#ifdef HAVE_FCONVERT
#include <floatingpoint.h>
#endif

// Maximum allowed exponent value for converting string to decimal
#define MAX_EXPONENT 1024



/*****************************************************************************
  Instansiate templates and static variables
*****************************************************************************/

#ifdef __GNUC__
template class List<create_field>;
template class List_iterator<create_field>;
#endif

uchar Field_null::null[1]={1};
const char field_separator=',';

#define DOUBLE_TO_STRING_CONVERSION_BUFFER_SIZE 320

/*****************************************************************************
  Static help functions
*****************************************************************************/

void Field_num::prepend_zeros(String *value)
{
  int diff;
  if ((diff= (int) (field_length - value->length())) > 0)
  {
    bmove_upp((char*) value->ptr()+field_length,value->ptr()+value->length(),
	      value->length());
    bfill((char*) value->ptr(),diff,'0');
    value->length(field_length);
    (void) value->c_ptr_quick();		// Avoid warnings in purify
  }
}

/*
  Test if given number is a int (or a fixed format float with .000)
  This is only used to give warnings in ALTER TABLE or LOAD DATA...
*/

bool test_if_int(const char *str,int length)
{
  const char *end=str+length;

  while (str != end && isspace(*str))	// Allow start space
    str++; /* purecov: inspected */
  if (str != end && (*str == '-' || *str == '+'))
    str++;
  if (str == end)
    return 0;					// Error: Empty string
  for (; str != end ; str++)
  {
    if (!isdigit(*str))
    {
      if (*str == '.')
      {						// Allow '.0000'
	for (str++ ; str != end && *str == '0'; str++) ;
	if (str == end)
	  return 1;
      }
      if (!isspace(*str))
	return 0;
      for (str++ ; str != end ; str++)
	if (!isspace(*str))
	  return 0;
      return 1;
    }
  }
  return 1;
}


static bool test_if_real(const char *str,int length)
{
  while (length && isspace(*str))
  {						// Allow start space
    length--; str++;
  }
  if (!length)
    return 0;
  if (*str == '+' || *str == '-')
  {
    length--; str++;
    if (!length || !(isdigit(*str) || *str == '.'))
      return 0;
  }
  while (length && isdigit(*str))
  {
    length--; str++;
  }
  if (!length)
    return 1;
  if (*str == '.')
  {
    length--; str++;
    while (length && isdigit(*str))
    {
      length--; str++;
    }
  }
  if (!length)
    return 1;
  if (*str == 'E' || *str == 'e')
  {
    if (length < 3 || (str[1] != '+' && str[1] != '-') || !isdigit(str[2]))
      return 0;
    length-=3;
    str+=3;
    while (length && isdigit(*str))
    {
      length--; str++;
    }
  }
  for (; length ; length--, str++)
  {						// Allow end space
    if (!isspace(*str))
      return 0;
  }
  return 1;
}


static inline uint field_length_without_space(const char *ptr, uint length)
{
  const char *end= ptr+length;
  while (end > ptr && end[-1] == ' ')
    end--;
  return (uint) (end-ptr);
}

/****************************************************************************
** Functions for the base classes
** This is an unpacked number.
****************************************************************************/

Field::Field(char *ptr_arg,uint32 length_arg,uchar *null_ptr_arg,
	     uchar null_bit_arg,
	     utype unireg_check_arg, const char *field_name_arg,
	     struct st_table *table_arg)
  :ptr(ptr_arg),null_ptr(null_ptr_arg),
   table(table_arg),table_name(table_arg ? table_arg->table_name : 0),
   field_name(field_name_arg),
   query_id(0),key_start(0),part_of_key(0),part_of_sortkey(0),
   unireg_check(unireg_check_arg),
   field_length(length_arg),null_bit(null_bit_arg)
{
  flags=null_ptr ? 0: NOT_NULL_FLAG;
}

uint Field::offset()
{
  return (uint) (ptr - (char*) table->record[0]);
}


void Field::copy_from_tmp(int row_offset)
{
  memcpy(ptr,ptr+row_offset,pack_length());
  if (null_ptr)
  {
    *null_ptr= (uchar) ((null_ptr[0] & (uchar) ~(uint) null_bit) |
			null_ptr[row_offset] & (uchar) null_bit);
  }
}


bool Field::send(THD *thd, String *packet)
{
  if (is_null())
    return net_store_null(packet);
  char buff[MAX_FIELD_WIDTH];
  String tmp(buff,sizeof(buff));
  val_str(&tmp,&tmp);
  CONVERT *convert;
  if ((convert=thd->variables.convert_set))
    return convert->store(packet,tmp.ptr(),tmp.length());
  return net_store_data(packet,tmp.ptr(),tmp.length());
}


void Field_num::add_zerofill_and_unsigned(String &res) const
{
  res.length((uint) strlen(res.ptr()));		// Fix length
  if (unsigned_flag)
    res.append(" unsigned");
  if (zerofill)
    res.append(" zerofill");
}

void Field_num::make_field(Send_field *field)
{
  field->table_name=table_name;
  field->col_name=field_name;
  field->length=field_length;
  field->type=type();
  field->flags=table->maybe_null ? (flags & ~NOT_NULL_FLAG) : flags;
  field->decimals=dec;
}


void Field_str::make_field(Send_field *field)
{
  field->table_name=table_name;
  field->col_name=field_name;
  field->length=field_length;
  field->type=type();
  field->flags=table->maybe_null ? (flags & ~NOT_NULL_FLAG) : flags;
  field->decimals=0;
}


uint Field::fill_cache_field(CACHE_FIELD *copy)
{
  copy->str=ptr;
  copy->length=pack_length();
  copy->blob_field=0;
  if (flags & BLOB_FLAG)
  {
    copy->blob_field=(Field_blob*) this;
    copy->strip=0;
    copy->length-=table->blob_ptr_size;
    return copy->length;
  }
  else if (!zero_pack() && (type() == FIELD_TYPE_STRING && copy->length > 4 ||
			    type() == FIELD_TYPE_VAR_STRING))
    copy->strip=1;				/* Remove end space */
  else
    copy->strip=0;
  return copy->length+(int) copy->strip;
}

bool Field::get_date(TIME *ltime,bool fuzzydate)
{
  char buff[40];
  String tmp(buff,sizeof(buff)),tmp2,*res;
  if (!(res=val_str(&tmp,&tmp2)) ||
      str_to_TIME(res->ptr(),res->length(),ltime,fuzzydate) == TIMESTAMP_NONE)
    return 1;
  return 0;
}

bool Field::get_time(TIME *ltime)
{
  char buff[40];
  String tmp(buff,sizeof(buff)),tmp2,*res;
  if (!(res=val_str(&tmp,&tmp2)) ||
      str_to_time(res->ptr(),res->length(),ltime))
    return 1;
  return 0;
}


/* This is called when storing a date in a string */
void Field::store_time(TIME *ltime,timestamp_type type)
{
  char buff[25];
  switch (type)  {
  case TIMESTAMP_NONE:
    store("",0);			// Probably an error
    break;
  case TIMESTAMP_DATE:
    sprintf(buff,"%04d-%02d-%02d", ltime->year,ltime->month,ltime->day);
    store(buff,10);
    break;
  case TIMESTAMP_FULL:
    sprintf(buff,"%04d-%02d-%02d %02d:%02d:%02d",
	    ltime->year,ltime->month,ltime->day,
	    ltime->hour,ltime->minute,ltime->second);
    store(buff,19);
    break;
  case TIMESTAMP_TIME:
    sprintf(buff, "%02d:%02d:%02d",
	    ltime->hour,ltime->minute,ltime->second);
    store(buff,(uint) strlen(buff));
    break;
  }
}


bool Field::optimize_range(uint idx)
{
  return test(table->file->index_flags(idx) & HA_READ_NEXT);
}

/****************************************************************************
  Functions for the Field_decimal class
  This is an number stored as a pre-space (or pre-zero) string
****************************************************************************/

void
Field_decimal::reset(void)
{
  Field_decimal::store("0",1);
}

void Field_decimal::overflow(bool negative)
{
  uint len=field_length;
  char *to=ptr, filler= '9';

  current_thd->cuted_fields++;
  if (negative)
  {
    if (!unsigned_flag)
    {
      /* Put - sign as a first digit so we'll have -999..999 or 999..999 */
      *to++ = '-';
      len--;
    }
    else
    {
      filler= '0';				// Fill up with 0
      if (!zerofill)
      {
	/*
	  Handle unsigned integer without zerofill, in which case
	  the number should be of format '   0' or '   0.000'
	*/
	uint whole_part=field_length- (dec ? dec+2 : 1);
	// Fill with spaces up to the first digit
	bfill(to, whole_part, ' ');
	to+=  whole_part;
	len-= whole_part;
	// The main code will also handle the 0 before the decimal point
      }
    }
  }
  bfill(to, len, filler);
  if (dec)
    ptr[field_length-dec-1]='.';
  return;
}


void Field_decimal::store(const char *from,uint len)
{
  const char *end= from+len;
  /* The pointer where the field value starts (i.e., "where to write") */
  char *to=ptr;
  uint tmp_dec, tmp_uint;
  /*
    The sign of the number : will be 0 (means positive but sign not
    specified), '+' or '-'
  */
  char sign_char=0;
 /* The pointers where prezeros start and stop */
  const char *pre_zeros_from, *pre_zeros_end;
 /* The pointers where digits at the left of '.' start and stop */
  const char *int_digits_from, *int_digits_end;
 /* The pointers where digits at the right of '.' start and stop */
  const char *frac_digits_from, *frac_digits_end;
 /* The sign of the exponent : will be 0 (means no exponent), '+' or '-' */
  char expo_sign_char=0;
  uint exponent=0;                                // value of the exponent
  /*
    Pointers used when digits move from the left of the '.' to the
    right of the '.' (explained below)
  */
  const char *int_digits_tail_from;
  /* Number of 0 that need to be added at the left of the '.' (1E3: 3 zeros) */
  uint int_digits_added_zeros;
 /*
   Pointer used when digits move from the right of the '.' to the left
   of the '.'
 */
  const char *frac_digits_head_end;
 /* Number of 0 that need to be added at the right of the '.' (for 1E-3) */
  uint frac_digits_added_zeros;
  char *pos,*tmp_left_pos,*tmp_right_pos;
  /* Pointers that are used as limits (begin and end of the field buffer) */
  char *left_wall,*right_wall;
  char tmp_char;
 /*
   To remember if current_thd->cuted_fields has already been incremented,
   to do that only once
 */
  bool is_cuted_fields_incr=0;

  LINT_INIT(int_digits_tail_from);
  LINT_INIT(int_digits_added_zeros);
  LINT_INIT(frac_digits_head_end);
  LINT_INIT(frac_digits_added_zeros);

  /*
    There are three steps in this function :
      - parse the input string
      - modify the position of digits around the decimal dot '.' 
        according to the exponent value (if specified)
	- write the formatted number
  */

  if ((tmp_dec=dec))
    tmp_dec++;

  for (; from !=end && isspace(*from); from++) ; // Read spaces
  if (from == end)
  {
    current_thd->cuted_fields++;
    is_cuted_fields_incr=1;
  }
  else if (*from == '+' || *from == '-')	// Found some sign ?
  {
    sign_char= *from++;
    /*
      We allow "+" for unsigned decimal unless defined different
      Both options allowed as one may wish not to have "+" for unsigned numbers
      because of data processing issues
    */ 
    if (unsigned_flag)  
    { 
      if (sign_char=='-')
      {
        Field_decimal::overflow(1);
        return;
      }
      /* 
        Defining this will not store "+" for unsigned decimal type even if
	it is passed in numeric string. This will make some tests to fail
      */	 
#ifdef DONT_ALLOW_UNSIGNED_PLUS      
      else 
        sign_char=0;
#endif 	
    }
  }

  pre_zeros_from= from;
  for (; from!=end && *from == '0'; from++) ;	// Read prezeros
  pre_zeros_end=int_digits_from=from;      
  /* Read non zero digits at the left of '.'*/
  for (; from!=end && isdigit(*from);from++) ;
  int_digits_end=from;
  if (from!=end && *from == '.')		// Some '.' ?
    from++;
  frac_digits_from= from;
  /* Read digits at the right of '.' */
  for (;from!=end && isdigit(*from); from++) ;
  frac_digits_end=from;
  // Some exponentiation symbol ?
  if (from != end && (*from == 'e' || *from == 'E'))
  {   
    from++;
    if (from != end && (*from == '+' || *from == '-'))  // Some exponent sign ?
      expo_sign_char= *from++;
    else
      expo_sign_char= '+';
    /*
      Read digits of the exponent and compute its value.  We must care about
      'exponent' overflow, because as unsigned arithmetic is "modulo", big 
      exponents will become small (e.g. 1e4294967296 will become 1e0, and the 
      field will finally contain 1 instead of its max possible value).
    */
    for (;from!=end && isdigit(*from); from++)
    {
      exponent=10*exponent+(*from-'0');
      if (exponent>MAX_EXPONENT)
        break;
    }
  }
  
  /*
    We only have to generate warnings if count_cuted_fields is set.
    This is to avoid extra checks of the number when they are not needed.
    Even if this flag is not set, it's ok to increment warnings, if
    it makes the code easer to read.
  */

  if (current_thd->count_cuted_fields)
  {
    for (;from != end && isspace(*from); from++) ;   // Read end spaces
    if (from != end)                     // If still something left, warn
    {
      current_thd->cuted_fields++; 
      is_cuted_fields_incr=1;
    }
  }
  
  /*
    Now "move" digits around the decimal dot according to the exponent value,
    and add necessary zeros.
    Examples :
      - 1E+3 : needs 3 more zeros at the left of '.' (int_digits_added_zeros=3)
      - 1E-3 : '1' moves at the right of '.', and 2 more zeros are needed
        between '.' and '1'
    - 1234.5E-3 : '234' moves at the right of '.'
      These moves are implemented with pointers which point at the begin
      and end of each moved segment. Examples :
    - 1234.5E-3 : before the code below is executed, the int_digits part is
      from '1' to '4' and the frac_digits part from '5' to '5'. After the code
      below, the int_digits part is from '1' to '1', the frac_digits_head
      part is from '2' to '4', and the frac_digits part from '5' to '5'.
    - 1234.5E3 : before the code below is executed, the int_digits part is
      from '1' to '4' and the frac_digits part from '5' to '5'. After the code
      below, the int_digits part is from '1' to '4', the int_digits_tail
      part is from '5' to '5', the frac_digits part is empty, and
      int_digits_added_zeros=2 (to make 1234500).
  */
  
  /* 
     Below tmp_uint cannot overflow with small enough MAX_EXPONENT setting,
     as int_digits_added_zeros<=exponent<4G and 
     (int_digits_end-int_digits_from)<=max_allowed_packet<=2G and
     (frac_digits_from-int_digits_tail_from)<=max_allowed_packet<=2G
  */

  if (!expo_sign_char)
    tmp_uint=tmp_dec+(uint)(int_digits_end-int_digits_from);
  else if (expo_sign_char == '-') 
  {
    tmp_uint=min(exponent,(uint)(int_digits_end-int_digits_from));
    frac_digits_added_zeros=exponent-tmp_uint;
    int_digits_end -= tmp_uint;
    frac_digits_head_end=int_digits_end+tmp_uint;
    tmp_uint=tmp_dec+(uint)(int_digits_end-int_digits_from);     
  }
  else // (expo_sign_char=='+') 
  {
    tmp_uint=min(exponent,(uint)(frac_digits_end-frac_digits_from));
    int_digits_added_zeros=exponent-tmp_uint;
    int_digits_tail_from=frac_digits_from;
    frac_digits_from=frac_digits_from+tmp_uint;
    /*
      We "eat" the heading zeros of the 
      int_digits.int_digits_tail.int_digits_added_zeros concatenation
      (for example 0.003e3 must become 3 and not 0003)
    */
    if (int_digits_from == int_digits_end) 
    {
      /*
	There was nothing in the int_digits part, so continue
	eating int_digits_tail zeros
      */
      for (; int_digits_tail_from != frac_digits_from &&
	     *int_digits_tail_from == '0'; int_digits_tail_from++) ;
      if (int_digits_tail_from == frac_digits_from) 
      {
	// there were only zeros in int_digits_tail too
	int_digits_added_zeros=0;
      }
    }
    tmp_uint= (tmp_dec+(int_digits_end-int_digits_from)+
               (uint)(frac_digits_from-int_digits_tail_from)+
               int_digits_added_zeros);
  }
  
  /*
    Now write the formated number
    
    First the digits of the int_% parts.
    Do we have enough room to write these digits ?
    If the sign is defined and '-', we need one position for it
  */

  if (field_length < tmp_uint + (int) (sign_char == '-')) 
  {
    // too big number, change to max or min number
    Field_decimal::overflow(sign_char == '-');
    return;
  }
 
  /*
    Tmp_left_pos is the position where the leftmost digit of
    the int_% parts will be written
  */
  tmp_left_pos=pos=to+(uint)(field_length-tmp_uint);
  
  // Write all digits of the int_% parts
  while (int_digits_from != int_digits_end)
    *pos++ = *int_digits_from++ ;

  if (expo_sign_char == '+')
  {    
    while (int_digits_tail_from != frac_digits_from)
      *pos++= *int_digits_tail_from++;
    while (int_digits_added_zeros-- >0)
      *pos++= '0';  
  }
  /*
    Note the position where the rightmost digit of the int_% parts has been
    written (this is to later check if the int_% parts contained nothing,
    meaning an extra 0 is needed).
  */
  tmp_right_pos=pos;

  /*
    Step back to the position of the leftmost digit of the int_% parts,
    to write sign and fill with zeros or blanks or prezeros.
  */
  pos=tmp_left_pos-1;
  if (zerofill)
  {
    left_wall=to-1;
    while (pos > left_wall)			// Fill with zeros
      *pos--='0';
  }
  else
  {
    left_wall=to+(sign_char != 0)-1;
    if (!expo_sign_char)	// If exponent was specified, ignore prezeros
    {
      for (;pos > left_wall && pre_zeros_from !=pre_zeros_end;
	   pre_zeros_from++)
	*pos--= '0';
    }
    if (pos == tmp_right_pos-1)
      *pos--= '0';		// no 0 has ever been written, so write one
    left_wall= to-1;
    if (sign_char && pos != left_wall)
    {
      /* Write sign if possible (it is if sign is '-') */
      *pos--= sign_char;
    }
    while (pos != left_wall)
      *pos--=' ';  //fill with blanks
  }
  
  /*
    Write digits of the frac_% parts ;
    Depending on current_thd->count_cutted_fields, we may also want
    to know if some non-zero tail of these parts will
    be truncated (for example, 0.002->0.00 will generate a warning,
    while 0.000->0.00 will not)
    (and 0E1000000000 will not, while 1E-1000000000 will)
  */
      
  pos=to+(uint)(field_length-tmp_dec);	// Calculate post to '.'
  right_wall=to+field_length;
  if (pos != right_wall) 
    *pos++='.';

  if (expo_sign_char == '-')
  {
    while (frac_digits_added_zeros-- > 0)
    {
      if (pos == right_wall) 
      {
        if (current_thd->count_cuted_fields && !is_cuted_fields_incr) 
          break; // Go on below to see if we lose non zero digits
        return;
      }
      *pos++='0';
    }
    while (int_digits_end != frac_digits_head_end)
    {
      tmp_char= *int_digits_end++;
      if (pos == right_wall)
      {
        if (tmp_char != '0')			// Losing a non zero digit ?
        {
          if (!is_cuted_fields_incr)
            current_thd->cuted_fields++;
          return;
        }
        continue;
      }
      *pos++= tmp_char;
    }
  }

  for (;frac_digits_from!=frac_digits_end;) 
  {
    tmp_char= *frac_digits_from++;
    if (pos == right_wall)
    {
      if (tmp_char != '0')			// Losing a non zero digit ?
      {
        if (!is_cuted_fields_incr)
	  current_thd->cuted_fields++;
        return;
      }
      continue;
    }
    *pos++= tmp_char;
  }
      
  while (pos != right_wall)
   *pos++='0';			// Fill with zeros at right of '.'
  
}


void Field_decimal::store(double nr)
{
  if (unsigned_flag && nr < 0)
  {
    overflow(1);
    return;
  }
  
#ifdef HAVE_FINITE
  if (!finite(nr)) // Handle infinity as special case
  {
    overflow(nr < 0.0);
    return;      
  }
#endif
  
  reg4 uint i,length;
  char fyllchar,*to;
  char buff[DOUBLE_TO_STRING_CONVERSION_BUFFER_SIZE];

  fyllchar = zerofill ? (char) '0' : (char) ' ';
#ifdef HAVE_SNPRINTF
  buff[sizeof(buff)-1]=0;			// Safety
  snprintf(buff,sizeof(buff)-1, "%.*f",(int) dec,nr);
#else
  sprintf(buff,"%.*f",dec,nr);
#endif
  length=(uint) strlen(buff);

  if (length > field_length)
    overflow(nr < 0.0);
  else
  {
    to=ptr;
    for (i=field_length-length ; i-- > 0 ;)
      *to++ = fyllchar;
    memcpy(to,buff,length);
  }
}


void Field_decimal::store(longlong nr)
{
  if (unsigned_flag && nr < 0)
  {
    overflow(1);
    return;
  }
  char buff[22];
  uint length=(uint) (longlong10_to_str(nr,buff,-10)-buff);
  uint int_part=field_length- (dec  ? dec+1 : 0);

  if (length > int_part)
    overflow(test(nr < 0L));			/* purecov: inspected */
  else
  {
    char fyllchar = zerofill ? (char) '0' : (char) ' ';
    char *to=ptr;
    for (uint i=int_part-length ; i-- > 0 ;)
      *to++ = fyllchar;
    memcpy(to,buff,length);
    if (dec)
    {
      to[length]='.';
      bfill(to+length+1,dec,'0');
    }
  }
}


double Field_decimal::val_real(void)
{
  char temp= *(ptr+field_length); *(ptr+field_length) = '\0';
  double nr=atod(ptr);
  *(ptr+field_length)=temp;
  return(nr);
}

longlong Field_decimal::val_int(void)
{
  char temp= *(ptr+field_length); *(ptr+field_length) = '\0';
  longlong nr;
  if (unsigned_flag)
    nr=(longlong) strtoull(ptr,NULL,10);
  else
    nr=strtoll(ptr,NULL,10);
  *(ptr+field_length)=temp;
  return(nr);
}

String *Field_decimal::val_str(String *val_buffer __attribute__((unused)),
			       String *val_ptr)
{
  char *str;
  for (str=ptr ; *str == ' ' ; str++) ;
  uint tmp_length=(uint) (str-ptr);
  if (field_length < tmp_length)		// Error in data
    val_ptr->length(0);
  else
    val_ptr->set((const char*) str,field_length-tmp_length);
  return val_ptr;
}

/*
** Should be able to handle at least the following fixed decimal formats:
** 5.00 , -1.0,  05,  -05, +5 with optional pre/end space
*/

int Field_decimal::cmp(const char *a_ptr,const char *b_ptr)
{
  const char *end;
  int swap=0;
  /* First remove prefixes '0', ' ', and '-' */
  for (end=a_ptr+field_length;
       a_ptr != end &&
	 (*a_ptr == *b_ptr ||
	  ((isspace(*a_ptr)  || *a_ptr == '+' || *a_ptr == '0') &&
	   (isspace(*b_ptr) || *b_ptr == '+' || *b_ptr == '0')));
       a_ptr++,b_ptr++)
  {
    if (*a_ptr == '-')				// If both numbers are negative
      swap= -1 ^ 1;				// Swap result      
  }
  if (a_ptr == end)
    return 0;
  if (*a_ptr == '-')
    return -1;
  if (*b_ptr == '-')
    return 1;

  while (a_ptr != end)
  {
    if (*a_ptr++ != *b_ptr++)
      return swap ^ (a_ptr[-1] < b_ptr[-1] ? -1 : 1); // compare digits
  }
  return 0;
}


void Field_decimal::sort_string(char *to,uint length)
{
  char *str,*end;
  for (str=ptr,end=ptr+length;
       str != end &&
	 ((isspace(*str) || *str == '+' || *str == '0')) ;

       str++)
    *to++=' ';
  if (str == end)
    return;					/* purecov: inspected */

  if (*str == '-')
  {
    *to++=1;					// Smaller than any number
    str++;
    while (str != end)
      if (isdigit(*str))
	*to++= (char) ('9' - *str++);
      else
	*to++= *str++;
  }
  else memcpy(to,str,(uint) (end-str));
}

void Field_decimal::sql_type(String &res) const
{
  uint tmp=field_length;
  if (!unsigned_flag)
    tmp--;
  if (dec)
    tmp--;
  sprintf((char*) res.ptr(),"decimal(%d,%d)",tmp,dec);
  add_zerofill_and_unsigned(res);
}


/****************************************************************************
** tiny int
****************************************************************************/

void Field_tiny::store(const char *from,uint len)
{
  String tmp_str(from,len);
  long tmp= strtol(tmp_str.c_ptr(),NULL,10);

  if (unsigned_flag)
  {
    if (tmp < 0)
    {
      tmp=0; /* purecov: inspected */
      current_thd->cuted_fields++; /* purecov: inspected */
    }
    else if (tmp > 255)
    {
      tmp= 255;
      current_thd->cuted_fields++;
    }
    else if (current_thd->count_cuted_fields && !test_if_int(from,len))
      current_thd->cuted_fields++;
  }
  else
  {
    if (tmp < -128)
    {
      tmp= -128;
      current_thd->cuted_fields++;
    }
    else if (tmp >= 128)
    {
      tmp= 127;
      current_thd->cuted_fields++;
    }
    else if (current_thd->count_cuted_fields && !test_if_int(from,len))
      current_thd->cuted_fields++;
  }
  ptr[0]= (char) tmp;
}


void Field_tiny::store(double nr)
{
  nr=rint(nr);
  if (unsigned_flag)
  {
    if (nr < 0.0)
    {
      *ptr=0;
      current_thd->cuted_fields++;
    }
    else if (nr > 255.0)
    {
      *ptr=(char) 255;
      current_thd->cuted_fields++;
    }
    else
      *ptr=(char) nr;
  }
  else
  {
    if (nr < -128.0)
    {
      *ptr= (char) -128;
      current_thd->cuted_fields++;
    }
    else if (nr > 127.0)
    {
      *ptr=127;
      current_thd->cuted_fields++;
    }
    else
      *ptr=(char) nr;
  }
}

void Field_tiny::store(longlong nr)
{
  if (unsigned_flag)
  {
    if (nr < 0L)
    {
      *ptr=0;
      current_thd->cuted_fields++;
    }
    else if (nr > 255L)
    {
      *ptr= (char) 255;
      current_thd->cuted_fields++;
    }
    else
      *ptr=(char) nr;
  }
  else
  {
    if (nr < -128L)
    {
      *ptr= (char) -128;
      current_thd->cuted_fields++;
    }
    else if (nr > 127L)
    {
      *ptr=127;
      current_thd->cuted_fields++;
    }
    else
      *ptr=(char) nr;
  }
}


double Field_tiny::val_real(void)
{
  int tmp= unsigned_flag ? (int) ((uchar*) ptr)[0] :
    (int) ((signed char*) ptr)[0];
  return (double) tmp;
}

longlong Field_tiny::val_int(void)
{
  int tmp= unsigned_flag ? (int) ((uchar*) ptr)[0] :
    (int) ((signed char*) ptr)[0];
  return (longlong) tmp;
}

String *Field_tiny::val_str(String *val_buffer,
			    String *val_ptr __attribute__((unused)))
{
  uint length;
  val_buffer->alloc(max(field_length+1,5));
  char *to=(char*) val_buffer->ptr();
  if (unsigned_flag)
    length= (uint) (int10_to_str((long) *((uchar*) ptr),to,10)-to);
  else
    length= (uint) (int10_to_str((long) *((signed char*) ptr),to,-10)-to);
  val_buffer->length(length);
  if (zerofill)
    prepend_zeros(val_buffer);
  return val_buffer;
}


int Field_tiny::cmp(const char *a_ptr, const char *b_ptr)
{
  signed char a,b;
  a=(signed char) a_ptr[0]; b= (signed char) b_ptr[0];
  if (unsigned_flag)
    return ((uchar) a < (uchar) b) ? -1 : ((uchar) a > (uchar) b) ? 1 : 0;
  return (a < b) ? -1 : (a > b) ? 1 : 0;
}

void Field_tiny::sort_string(char *to,uint length __attribute__((unused)))
{
  if (unsigned_flag)
    *to= *ptr;
  else
    to[0] = (char) ((uchar) ptr[0] ^ (uchar) 128);	/* Revers signbit */
}

void Field_tiny::sql_type(String &res) const
{
  sprintf((char*) res.ptr(),"tinyint(%d)",(int) field_length);
  add_zerofill_and_unsigned(res);
}

/****************************************************************************
** short int
****************************************************************************/


// Note:  Sometimes this should be fixed to use one strtol() to use
// len and check for garbage after number.

void Field_short::store(const char *from,uint len)
{
  String tmp_str(from,len);
  long tmp= strtol(tmp_str.c_ptr(),NULL,10);
  if (unsigned_flag)
  {
    if (tmp < 0)
    {
      tmp=0;
      current_thd->cuted_fields++;
    }
    else if (tmp > (uint16) ~0)
    {
      tmp=(uint16) ~0;
      current_thd->cuted_fields++;
    }
    else if (current_thd->count_cuted_fields && !test_if_int(from,len))
      current_thd->cuted_fields++;
  }
  else
  {
    if (tmp < INT_MIN16)
    {
      tmp= INT_MIN16;
      current_thd->cuted_fields++;
    }
    else if (tmp > INT_MAX16)
    {
      tmp=INT_MAX16;
      current_thd->cuted_fields++;
    }
    else if (current_thd->count_cuted_fields && !test_if_int(from,len))
      current_thd->cuted_fields++;
  }
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int2store(ptr,tmp);
  }
  else
#endif
    shortstore(ptr,(short) tmp);
}


void Field_short::store(double nr)
{
  int16 res;
  nr=rint(nr);
  if (unsigned_flag)
  {
    if (nr < 0)
    {
      res=0;
      current_thd->cuted_fields++;
    }
    else if (nr > (double) (uint16) ~0)
    {
      res=(int16) (uint16) ~0;
      current_thd->cuted_fields++;
    }
    else
      res=(int16) (uint16) nr;
  }
  else
  {
    if (nr < (double) INT_MIN16)
    {
      res=INT_MIN16;
      current_thd->cuted_fields++;
    }
    else if (nr > (double) INT_MAX16)
    {
      res=INT_MAX16;
      current_thd->cuted_fields++;
    }
    else
      res=(int16) nr;
  }
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int2store(ptr,res);
  }
  else
#endif
    shortstore(ptr,res);
}

void Field_short::store(longlong nr)
{
  int16 res;
  if (unsigned_flag)
  {
    if (nr < 0L)
    {
      res=0;
      current_thd->cuted_fields++;
    }
    else if (nr > (longlong) (uint16) ~0)
    {
      res=(int16) (uint16) ~0;
      current_thd->cuted_fields++;
    }
    else
      res=(int16) (uint16) nr;
  }
  else
  {
    if (nr < INT_MIN16)
    {
      res=INT_MIN16;
      current_thd->cuted_fields++;
    }
    else if (nr > INT_MAX16)
    {
      res=INT_MAX16;
      current_thd->cuted_fields++;
    }
    else
      res=(int16) nr;
  }
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int2store(ptr,res);
  }
  else
#endif
    shortstore(ptr,res);
}


double Field_short::val_real(void)
{
  short j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    j=sint2korr(ptr);
  else
#endif
    shortget(j,ptr);
  return unsigned_flag ? (double) (unsigned short) j : (double) j;
}

longlong Field_short::val_int(void)
{
  short j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    j=sint2korr(ptr);
  else
#endif
    shortget(j,ptr);
  return unsigned_flag ? (longlong) (unsigned short) j : (longlong) j;
}

String *Field_short::val_str(String *val_buffer,
			     String *val_ptr __attribute__((unused)))
{
  uint length;
  val_buffer->alloc(max(field_length+1,7));
  char *to=(char*) val_buffer->ptr();
  short j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    j=sint2korr(ptr);
  else
#endif
    shortget(j,ptr);

  if (unsigned_flag)
    length=(uint) (int10_to_str((long) (uint16) j,to,10)-to);
  else
    length=(uint) (int10_to_str((long) j,to,-10)-to);
  val_buffer->length(length);
  if (zerofill)
    prepend_zeros(val_buffer);
  return val_buffer;
}


int Field_short::cmp(const char *a_ptr, const char *b_ptr)
{
  short a,b;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    a=sint2korr(a_ptr);
    b=sint2korr(b_ptr);
  }
  else
#endif
  {
    shortget(a,a_ptr);
    shortget(b,b_ptr);
  }

  if (unsigned_flag)
    return ((unsigned short) a < (unsigned short) b) ? -1 :
    ((unsigned short) a > (unsigned short) b) ? 1 : 0;
  return (a < b) ? -1 : (a > b) ? 1 : 0;
}

void Field_short::sort_string(char *to,uint length __attribute__((unused)))
{
#ifdef WORDS_BIGENDIAN
  if (!table->db_low_byte_first)
  {
    if (unsigned_flag)
      to[0] = ptr[0];
    else
      to[0] = (char) (ptr[0] ^ 128);		/* Revers signbit */
    to[1]   = ptr[1];
  }
  else
#endif
  {
    if (unsigned_flag)
      to[0] = ptr[1];
    else
      to[0] = (char) (ptr[1] ^ 128);		/* Revers signbit */
    to[1]   = ptr[0];
  }
}

void Field_short::sql_type(String &res) const
{
  sprintf((char*) res.ptr(),"smallint(%d)",(int) field_length);
  add_zerofill_and_unsigned(res);
}


/****************************************************************************
** medium int
****************************************************************************/

// Note:  Sometimes this should be fixed to use one strtol() to use
// len and check for garbage after number.

void Field_medium::store(const char *from,uint len)
{
  String tmp_str(from,len);
  long tmp= strtol(tmp_str.c_ptr(),NULL,10);

  if (unsigned_flag)
  {
    if (tmp < 0)
    {
      tmp=0;
      current_thd->cuted_fields++;
    }
    else if (tmp >= (long) (1L << 24))
    {
      tmp=(long) (1L << 24)-1L;
      current_thd->cuted_fields++;
    }
    else if (current_thd->count_cuted_fields && !test_if_int(from,len))
      current_thd->cuted_fields++;
  }
  else
  {
    if (tmp < INT_MIN24)
    {
      tmp= INT_MIN24;
      current_thd->cuted_fields++;
    }
    else if (tmp > INT_MAX24)
    {
      tmp=INT_MAX24;
      current_thd->cuted_fields++;
    }
    else if (current_thd->count_cuted_fields && !test_if_int(from,len))
      current_thd->cuted_fields++;
  }

  int3store(ptr,tmp);
}


void Field_medium::store(double nr)
{
  nr=rint(nr);
  if (unsigned_flag)
  {
    if (nr < 0)
    {
      int3store(ptr,0);
      current_thd->cuted_fields++;
    }
    else if (nr >= (double) (long) (1L << 24))
    {
      uint32 tmp=(uint32) (1L << 24)-1L;
      int3store(ptr,tmp);
      current_thd->cuted_fields++;
    }
    else
      int3store(ptr,(uint32) nr);
  }
  else
  {
    if (nr < (double) INT_MIN24)
    {
      long tmp=(long) INT_MIN24;
      int3store(ptr,tmp);
      current_thd->cuted_fields++;
    }
    else if (nr > (double) INT_MAX24)
    {
      long tmp=(long) INT_MAX24;
      int3store(ptr,tmp);
      current_thd->cuted_fields++;
    }
    else
      int3store(ptr,(long) nr);
  }
}

void Field_medium::store(longlong nr)
{
  if (unsigned_flag)
  {
    if (nr < 0L)
    {
      int3store(ptr,0);
      current_thd->cuted_fields++;
    }
    else if (nr >= (longlong) (long) (1L << 24))
    {
      long tmp=(long) (1L << 24)-1L;;
      int3store(ptr,tmp);
      current_thd->cuted_fields++;
    }
    else
      int3store(ptr,(uint32) nr);
  }
  else
  {
    if (nr < (longlong) INT_MIN24)
    {
      long tmp=(long) INT_MIN24;
      int3store(ptr,tmp);
      current_thd->cuted_fields++;
    }
    else if (nr > (longlong) INT_MAX24)
    {
      long tmp=(long) INT_MAX24;
      int3store(ptr,tmp);
      current_thd->cuted_fields++;
    }
    else
      int3store(ptr,(long) nr);
  }
}


double Field_medium::val_real(void)
{
  long j= unsigned_flag ? (long) uint3korr(ptr) : sint3korr(ptr);
  return (double) j;
}

longlong Field_medium::val_int(void)
{
  long j= unsigned_flag ? (long) uint3korr(ptr) : sint3korr(ptr);
  return (longlong) j;
}

String *Field_medium::val_str(String *val_buffer,
			      String *val_ptr __attribute__((unused)))
{
  uint length;
  val_buffer->alloc(max(field_length+1,10));
  char *to=(char*) val_buffer->ptr();
  long j= unsigned_flag ? (long) uint3korr(ptr) : sint3korr(ptr);

  length=(uint) (int10_to_str(j,to,-10)-to);
  val_buffer->length(length);
  if (zerofill)
    prepend_zeros(val_buffer); /* purecov: inspected */
  return val_buffer;
}


int Field_medium::cmp(const char *a_ptr, const char *b_ptr)
{
  long a,b;
  if (unsigned_flag)
  {
    a=uint3korr(a_ptr);
    b=uint3korr(b_ptr);
  }
  else
  {
    a=sint3korr(a_ptr);
    b=sint3korr(b_ptr);
  }
  return (a < b) ? -1 : (a > b) ? 1 : 0;
}

void Field_medium::sort_string(char *to,uint length __attribute__((unused)))
{
  if (unsigned_flag)
    to[0] = ptr[2];
  else
    to[0] = (uchar) (ptr[2] ^ 128);		/* Revers signbit */
  to[1] = ptr[1];
  to[2] = ptr[0];
}


void Field_medium::sql_type(String &res) const
{
  sprintf((char*) res.ptr(),"mediumint(%d)",(int) field_length);
  add_zerofill_and_unsigned(res);
}

/****************************************************************************
** long int
****************************************************************************/


// Note:  Sometimes this should be fixed to use one strtol() to use
// len and check for garbage after number.

void Field_long::store(const char *from,uint len)
{
  char *end;
  while (len && isspace(*from))
  {
    len--; from++;
  }
  long tmp, cuted_fields=0;
  String tmp_str(from,len);
  from= tmp_str.c_ptr();			// Add end null if needed
  errno=0;
  if (unsigned_flag)
  {
    if (!len || *from == '-')
    {
      tmp=0;					// Set negative to 0
      errno=ERANGE;
    }
    else
      tmp=(long) strtoul(from, &end, 10);
  }
  else
    tmp=strtol(from, &end, 10);
  if (errno ||
      (from+len != end && current_thd->count_cuted_fields &&
       !test_if_int(from,len)))
    cuted_fields=1;
#if SIZEOF_LONG > 4
  if (unsigned_flag)
  {
    if (tmp > UINT_MAX32)
    {
      tmp= UINT_MAX32;
      cuted_fields=1;
    }
  }
  else
  {
    if (tmp > INT_MAX32)
    {
      tmp= INT_MAX32;
      cuted_fields=1;
    }
    else if (tmp < INT_MIN32)
    {
      tmp= INT_MIN32;
      cuted_fields=1;
    }
  }
#endif
  if (cuted_fields)
    current_thd->cuted_fields++;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int4store(ptr,tmp);
  }
  else
#endif
    longstore(ptr,tmp);
}


void Field_long::store(double nr)
{
  int32 res;
  nr=rint(nr);
  if (unsigned_flag)
  {
    if (nr < 0)
    {
      res=0;
      current_thd->cuted_fields++;
    }
    else if (nr > (double) (ulong) ~0L)
    {
      res=(int32) (uint32) ~0L;
      current_thd->cuted_fields++;
    }
    else
      res=(int32) (ulong) nr;
  }
  else
  {
    if (nr < (double) INT_MIN32)
    {
      res=(int32) INT_MIN32;
      current_thd->cuted_fields++;
    }
    else if (nr > (double) INT_MAX32)
    {
      res=(int32) INT_MAX32;
      current_thd->cuted_fields++;
    }
    else
      res=(int32) nr;
  }
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int4store(ptr,res);
  }
  else
#endif
    longstore(ptr,res);
}


void Field_long::store(longlong nr)
{
  int32 res;
  if (unsigned_flag)
  {
    if (nr < 0)
    {
      res=0;
      current_thd->cuted_fields++;
    }
    else if (nr >= (LL(1) << 32))
    {
      res=(int32) (uint32) ~0L;
      current_thd->cuted_fields++;
    }
    else
      res=(int32) (uint32) nr;
  }
  else
  {
    if (nr < (longlong) INT_MIN32)
    {
      res=(int32) INT_MIN32;
      current_thd->cuted_fields++;
    }
    else if (nr > (longlong) INT_MAX32)
    {
      res=(int32) INT_MAX32;
      current_thd->cuted_fields++;
    }
    else
      res=(int32) nr;
  }
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int4store(ptr,res);
  }
  else
#endif
    longstore(ptr,res);
}


double Field_long::val_real(void)
{
  int32 j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    j=sint4korr(ptr);
  else
#endif
    longget(j,ptr);
  return unsigned_flag ? (double) (uint32) j : (double) j;
}

longlong Field_long::val_int(void)
{
  int32 j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    j=sint4korr(ptr);
  else
#endif
    longget(j,ptr);
  return unsigned_flag ? (longlong) (uint32) j : (longlong) j;
}

String *Field_long::val_str(String *val_buffer,
			    String *val_ptr __attribute__((unused)))
{
  uint length;
  val_buffer->alloc(max(field_length+1,12));
  char *to=(char*) val_buffer->ptr();
  int32 j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    j=sint4korr(ptr);
  else
#endif
    longget(j,ptr);

  length=(uint) (int10_to_str((unsigned_flag ? (long) (uint32) j : (long) j),
			 to,
			 unsigned_flag ? 10 : -10)-to);
  val_buffer->length(length);
  if (zerofill)
    prepend_zeros(val_buffer);
  return val_buffer;
}


int Field_long::cmp(const char *a_ptr, const char *b_ptr)
{
  int32 a,b;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    a=sint4korr(a_ptr);
    b=sint4korr(b_ptr);
  }
  else
#endif
  {
    longget(a,a_ptr);
    longget(b,b_ptr);
  }
  if (unsigned_flag)
    return ((uint32) a < (uint32) b) ? -1 : ((uint32) a > (uint32) b) ? 1 : 0;
  return (a < b) ? -1 : (a > b) ? 1 : 0;
}

void Field_long::sort_string(char *to,uint length __attribute__((unused)))
{
#ifdef WORDS_BIGENDIAN
  if (!table->db_low_byte_first)
  {
    if (unsigned_flag)
      to[0] = ptr[0];
    else
      to[0] = (char) (ptr[0] ^ 128);		/* Revers signbit */
    to[1]   = ptr[1];
    to[2]   = ptr[2];
    to[3]   = ptr[3];
  }
  else
#endif
  {
    if (unsigned_flag)
      to[0] = ptr[3];
    else
      to[0] = (char) (ptr[3] ^ 128);		/* Revers signbit */
    to[1]   = ptr[2];
    to[2]   = ptr[1];
    to[3]   = ptr[0];
  }
}


void Field_long::sql_type(String &res) const
{
  sprintf((char*) res.ptr(),"int(%d)",(int) field_length);
  add_zerofill_and_unsigned(res);
}

/****************************************************************************
** longlong int
****************************************************************************/

void Field_longlong::store(const char *from,uint len)
{
  char *end;
  while (len && isspace(*from))
  {						// For easy error check
    len--; from++;
  }
  longlong tmp;
  String tmp_str(from,len);
  from= tmp_str.c_ptr();			// Add end null if needed
  errno=0;
  if (unsigned_flag)
  {
    if (!len || *from == '-')
    {
      tmp=0;					// Set negative to 0
      errno=ERANGE;
    }
    else
      tmp=(longlong) strtoull(from, &end, 10);
  }
  else
    tmp=strtoll(from, &end, 10);
  if (errno ||
      (from+len != end && current_thd->count_cuted_fields &&
       !test_if_int(from,len)))
      current_thd->cuted_fields++;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int8store(ptr,tmp);
  }
  else
#endif
    longlongstore(ptr,tmp);
}


void Field_longlong::store(double nr)
{
  longlong res;
  nr=rint(nr);
  if (unsigned_flag)
  {
    if (nr < 0)
    {
      res=0;
      current_thd->cuted_fields++;
    }
    else if (nr >= (double) ~ (ulonglong) 0)
    {
      res= ~(longlong) 0;
      current_thd->cuted_fields++;
    }
    else
      res=(longlong) (ulonglong) nr;
  }
  else
  {
    if (nr <= (double) LONGLONG_MIN)
    {
      res=(longlong) LONGLONG_MIN;
      current_thd->cuted_fields++;
    }
    else if (nr >= (double) LONGLONG_MAX)
    {
      res=(longlong) LONGLONG_MAX;
      current_thd->cuted_fields++;
    }
    else
      res=(longlong) nr;
  }
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int8store(ptr,res);
  }
  else
#endif
    longlongstore(ptr,res);
}


void Field_longlong::store(longlong nr)
{
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int8store(ptr,nr);
  }
  else
#endif
    longlongstore(ptr,nr);
}


double Field_longlong::val_real(void)
{
  longlong j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    j=sint8korr(ptr);
  }
  else
#endif
    longlongget(j,ptr);
  /* The following is open coded to avoid a bug in gcc 3.3 */
  if (unsigned_flag)
  {
    ulonglong tmp= (ulonglong) j;
    return ulonglong2double(tmp);
  }
  return (double) j;
}


longlong Field_longlong::val_int(void)
{
  longlong j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    j=sint8korr(ptr);
  else
#endif
    longlongget(j,ptr);
  return j;
}


String *Field_longlong::val_str(String *val_buffer,
				String *val_ptr __attribute__((unused)))
{
  uint length;
  val_buffer->alloc(max(field_length+1,22));
  char *to=(char*) val_buffer->ptr();
  longlong j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    j=sint8korr(ptr);
  else
#endif
    longlongget(j,ptr);

  length=(uint) (longlong10_to_str(j,to,unsigned_flag ? 10 : -10)-to);
  val_buffer->length(length);
  if (zerofill)
    prepend_zeros(val_buffer);
  return val_buffer;
}


int Field_longlong::cmp(const char *a_ptr, const char *b_ptr)
{
  longlong a,b;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    a=sint8korr(a_ptr);
    b=sint8korr(b_ptr);
  }
  else
#endif
  {
    longlongget(a,a_ptr);
    longlongget(b,b_ptr);
  }
  if (unsigned_flag)
    return ((ulonglong) a < (ulonglong) b) ? -1 :
    ((ulonglong) a > (ulonglong) b) ? 1 : 0;
  return (a < b) ? -1 : (a > b) ? 1 : 0;
}

void Field_longlong::sort_string(char *to,uint length __attribute__((unused)))
{
#ifdef WORDS_BIGENDIAN
  if (!table->db_low_byte_first)
  {
    if (unsigned_flag)
      to[0] = ptr[0];
    else
      to[0] = (char) (ptr[0] ^ 128);		/* Revers signbit */
    to[1]   = ptr[1];
    to[2]   = ptr[2];
    to[3]   = ptr[3];
    to[4]   = ptr[4];
    to[5]   = ptr[5];
    to[6]   = ptr[6];
    to[7]   = ptr[7];
  }
  else
#endif
  {
    if (unsigned_flag)
      to[0] = ptr[7];
    else
      to[0] = (char) (ptr[7] ^ 128);		/* Revers signbit */
    to[1]   = ptr[6];
    to[2]   = ptr[5];
    to[3]   = ptr[4];
    to[4]   = ptr[3];
    to[5]   = ptr[2];
    to[6]   = ptr[1];
    to[7]   = ptr[0];
  }
}


void Field_longlong::sql_type(String &res) const
{
  sprintf((char*) res.ptr(),"bigint(%d)",(int) field_length);
  add_zerofill_and_unsigned(res);
}

/****************************************************************************
** single precision float
****************************************************************************/

void Field_float::store(const char *from,uint len)
{
  String tmp_str(from,len);
  errno=0;
  Field_float::store(atof(tmp_str.c_ptr()));
  if (errno || current_thd->count_cuted_fields && !test_if_real(from,len))
    current_thd->cuted_fields++;
}


void Field_float::store(double nr)
{
  float j;
  if (dec < NOT_FIXED_DEC)
    nr=floor(nr*log_10[dec]+0.5)/log_10[dec]; // To fixed point
  if (unsigned_flag && nr < 0)
  {
    current_thd->cuted_fields++;
    nr=0;
  }
  if (nr < -FLT_MAX)
  {
    j= -FLT_MAX;
    current_thd->cuted_fields++;
  }
  else if (nr > FLT_MAX)
  {
    j=FLT_MAX;
    current_thd->cuted_fields++;
  }
  else
    j= (float) nr;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    float4store(ptr,j);
  }
  else
#endif
    memcpy_fixed(ptr,(byte*) &j,sizeof(j));
}


void Field_float::store(longlong nr)
{
  float j= (float) nr;
  if (unsigned_flag && j < 0)
  {
    current_thd->cuted_fields++;
    j=0;
  }
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    float4store(ptr,j);
  }
  else
#endif
    memcpy_fixed(ptr,(byte*) &j,sizeof(j));
}


double Field_float::val_real(void)
{
  float j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    float4get(j,ptr);
  }
  else
#endif
    memcpy_fixed((byte*) &j,ptr,sizeof(j));
  return ((double) j);
}

longlong Field_float::val_int(void)
{
  float j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    float4get(j,ptr);
  }
  else
#endif
    memcpy_fixed((byte*) &j,ptr,sizeof(j));
  return ((longlong) j);
}


String *Field_float::val_str(String *val_buffer,
			     String *val_ptr __attribute__((unused)))
{
  float nr;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    float4get(nr,ptr);
  }
  else
#endif
    memcpy_fixed((byte*) &nr,ptr,sizeof(nr));

  uint to_length=max(field_length,70);
  val_buffer->alloc(to_length);
  char *to=(char*) val_buffer->ptr();

  if (dec >= NOT_FIXED_DEC)
  {
    sprintf(to,"%-*.*g",(int) field_length,FLT_DIG,nr);
    to=strcend(to,' ');
    *to=0;
  }
  else
  {
#ifdef HAVE_FCONVERT
    char buff[70],*pos=buff;
    int decpt,sign,tmp_dec=dec;

    VOID(sfconvert(&nr,tmp_dec,&decpt,&sign,buff));
    if (sign)
    {
      *to++='-';
    }
    if (decpt < 0)
    {					/* val_buffer is < 0 */
      *to++='0';
      if (!tmp_dec)
	goto end;
      *to++='.';
      if (-decpt > tmp_dec)
	decpt= - (int) tmp_dec;
      tmp_dec=(uint) ((int) tmp_dec+decpt);
      while (decpt++ < 0)
	*to++='0';
    }
    else if (decpt == 0)
    {
      *to++= '0';
      if (!tmp_dec)
	goto end;
      *to++='.';
    }
    else
    {
      while (decpt-- > 0)
	*to++= *pos++;
      if (!tmp_dec)
	goto end;
      *to++='.';
    }
    while (tmp_dec--)
      *to++= *pos++;
#else
#ifdef HAVE_SNPRINTF
    to[to_length-1]=0;			// Safety
    snprintf(to,to_length-1,"%.*f",dec,nr);
#else
    sprintf(to,"%.*f",dec,nr);
#endif
    to=strend(to);
#endif
  }
#ifdef HAVE_FCONVERT
 end:
#endif
  val_buffer->length((uint) (to-val_buffer->ptr()));
  if (zerofill)
    prepend_zeros(val_buffer);
  return val_buffer;
}


int Field_float::cmp(const char *a_ptr, const char *b_ptr)
{
  float a,b;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    float4get(a,a_ptr);
    float4get(b,b_ptr);
  }
  else
#endif
  {
    memcpy_fixed(&a,a_ptr,sizeof(float));
    memcpy_fixed(&b,b_ptr,sizeof(float));
  }
  return (a < b) ? -1 : (a > b) ? 1 : 0;
}

#define FLT_EXP_DIG (sizeof(float)*8-FLT_MANT_DIG)

void Field_float::sort_string(char *to,uint length __attribute__((unused)))
{
  float nr;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    float4get(nr,ptr);
  }
  else
#endif
    memcpy_fixed(&nr,ptr,sizeof(float));

  uchar *tmp= (uchar*) to;
  if (nr == (float) 0.0)
  {						/* Change to zero string */
    tmp[0]=(uchar) 128;
    bzero((char*) tmp+1,sizeof(nr)-1);
  }
  else
  {
#ifdef WORDS_BIGENDIAN
    memcpy_fixed(tmp,&nr,sizeof(nr));
#else
    tmp[0]= ptr[3]; tmp[1]=ptr[2]; tmp[2]= ptr[1]; tmp[3]=ptr[0];
#endif
    if (tmp[0] & 128)				/* Negative */
    {						/* make complement */
      uint i;
      for (i=0 ; i < sizeof(nr); i++)
	tmp[i]= (uchar) (tmp[i] ^ (uchar) 255);
    }
    else
    {
      ushort exp_part=(((ushort) tmp[0] << 8) | (ushort) tmp[1] |
		       (ushort) 32768);
      exp_part+= (ushort) 1 << (16-1-FLT_EXP_DIG);
      tmp[0]= (uchar) (exp_part >> 8);
      tmp[1]= (uchar) exp_part;
    }
  }
}


void Field_float::sql_type(String &res) const
{
  if (dec == NOT_FIXED_DEC)
    strmov((char*) res.ptr(),"float");
  else
    sprintf((char*) res.ptr(),"float(%d,%d)",(int) field_length,dec);
  add_zerofill_and_unsigned(res);
}

/****************************************************************************
** double precision floating point numbers
****************************************************************************/

void Field_double::store(const char *from,uint len)
{
  String tmp_str(from,len);
  errno=0;
  double j= atof(tmp_str.c_ptr());
  if (errno || current_thd->count_cuted_fields && !test_if_real(from,len))
    current_thd->cuted_fields++;
  if (unsigned_flag && j < 0)
  {
    current_thd->cuted_fields++;
    j=0;
  }
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    float8store(ptr,j);
  }
  else
#endif
    doublestore(ptr,j);
}


void Field_double::store(double nr)
{
  if (dec < NOT_FIXED_DEC)
    nr=floor(nr*log_10[dec]+0.5)/log_10[dec]; // To fixed point
  if (unsigned_flag && nr < 0)
  {
    current_thd->cuted_fields++;
    nr=0;
  }
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    float8store(ptr,nr);
  }
  else
#endif
    doublestore(ptr,nr);
}


void Field_double::store(longlong nr)
{
  double j= (double) nr;
  if (unsigned_flag && j < 0)
  {
    current_thd->cuted_fields++;
    j=0;
  }
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    float8store(ptr,j);
  }
  else
#endif
    doublestore(ptr,j);
}


double Field_double::val_real(void)
{
  double j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    float8get(j,ptr);
  }
  else
#endif
    doubleget(j,ptr);
  return j;
}

longlong Field_double::val_int(void)
{
  double j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    float8get(j,ptr);
  }
  else
#endif
    doubleget(j,ptr);
  return ((longlong) j);
}


String *Field_double::val_str(String *val_buffer,
			      String *val_ptr __attribute__((unused)))
{
  double nr;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    float8get(nr,ptr);
  }
  else
#endif
    doubleget(nr,ptr);

  uint to_length=max(field_length, DOUBLE_TO_STRING_CONVERSION_BUFFER_SIZE);
  val_buffer->alloc(to_length);
  char *to=(char*) val_buffer->ptr();

  if (dec >= NOT_FIXED_DEC)
  {
    sprintf(to,"%-*.*g",(int) field_length,DBL_DIG,nr);
    to=strcend(to,' ');
  }
  else
  {
#ifdef HAVE_FCONVERT
    char buff[DOUBLE_TO_STRING_CONVERSION_BUFFER_SIZE];
    char *pos= buff;
    int decpt,sign,tmp_dec=dec;

    VOID(fconvert(nr,tmp_dec,&decpt,&sign,buff));
    if (sign)
    {
      *to++='-';
    }
    if (decpt < 0)
    {					/* val_buffer is < 0 */
      *to++='0';
      if (!tmp_dec)
	goto end;
      *to++='.';
      if (-decpt > tmp_dec)
	decpt= - (int) tmp_dec;
      tmp_dec=(uint) ((int) tmp_dec+decpt);
      while (decpt++ < 0)
	*to++='0';
    }
    else if (decpt == 0)
    {
      *to++= '0';
      if (!tmp_dec)
	goto end;
      *to++='.';
    }
    else
    {
      while (decpt-- > 0)
	*to++= *pos++;
      if (!tmp_dec)
	goto end;
      *to++='.';
    }
    while (tmp_dec--)
      *to++= *pos++;
#else
#ifdef HAVE_SNPRINTF
    to[to_length-1]=0;			// Safety
    snprintf(to,to_length-1,"%.*f",dec,nr);
#else
    sprintf(to,"%.*f",dec,nr);
#endif
    to=strend(to);
#endif
  }
#ifdef HAVE_FCONVERT
 end:
#endif

  val_buffer->length((uint) (to-val_buffer->ptr()));
  if (zerofill)
    prepend_zeros(val_buffer);
  return val_buffer;
}


int Field_double::cmp(const char *a_ptr, const char *b_ptr)
{
  double a,b;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    float8get(a,a_ptr);
    float8get(b,b_ptr);
  }
  else
#endif
  {
/* could this ALWAYS be 2 calls to doubleget() ?? */
#if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
    doubleget(a, a_ptr);
    doubleget(b, b_ptr);
#else
    memcpy_fixed(&a,a_ptr,sizeof(double));
    memcpy_fixed(&b,b_ptr,sizeof(double));
#endif
  }
  return (a < b) ? -1 : (a > b) ? 1 : 0;
}


#define DBL_EXP_DIG (sizeof(double)*8-DBL_MANT_DIG)

/* The following should work for IEEE */

void Field_double::sort_string(char *to,uint length __attribute__((unused)))
{
  double nr;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    float8get(nr,ptr);
  }
  else
#endif
/* could this ALWAYS be 2 calls to doubleget() ?? */
#if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
    doubleget(nr,ptr);
#else
    memcpy_fixed(&nr,ptr,sizeof(nr));
#endif
  change_double_for_sort(nr, (byte*) to);
}


void Field_double::sql_type(String &res) const
{
  if (dec == NOT_FIXED_DEC)
    strmov((char*) res.ptr(),"double");
  else
    sprintf((char*) res.ptr(),"double(%d,%d)",(int) field_length,dec);
  add_zerofill_and_unsigned(res);
}


/****************************************************************************
** timestamp
** The first timestamp in the table is automaticly updated
** by handler.cc.  The form->timestamp points at the automatic timestamp.
****************************************************************************/

enum Item_result Field_timestamp::result_type() const
{
 return ((field_length == 8 || field_length == 14) ? INT_RESULT :
	 STRING_RESULT);
}


Field_timestamp::Field_timestamp(char *ptr_arg, uint32 len_arg,
				 enum utype unireg_check_arg,
				 const char *field_name_arg,
				 struct st_table *table_arg)
    :Field_num(ptr_arg, len_arg, (uchar*) 0,0,
	       unireg_check_arg, field_name_arg, table_arg,
	       0, 1, 1)
#if MYSQL_VERSION_ID < 40100
    , orig_field_length(len_arg)
#endif
{
  if (table && !table->timestamp_field)
  {
    table->timestamp_field= this;		// Automatic timestamp
    table->time_stamp=(ulong) (ptr_arg - (char*) table->record[0])+1;
    flags|=TIMESTAMP_FLAG;
  }
}


void Field_timestamp::store(const char *from,uint len)
{
  long tmp=(long) str_to_timestamp(from,len);
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int4store(ptr,tmp);
  }
  else
#endif
    longstore(ptr,tmp);
}

void Field_timestamp::fill_and_store(char *from,uint len)
{
  uint res_length;
  if (len <= field_length)
    res_length=field_length;
  else if (len <= 12)
    res_length=12;				/* purecov: inspected */
  else if (len <= 14)
    res_length=14;				/* purecov: inspected */
  else
    res_length=(len+1)/2*2;			// must be even
  if (res_length != len)
  {
    bmove_upp(from+res_length,from+len,len);
    bfill(from,res_length-len,'0');
    len=res_length;
  }
  long tmp=(long) str_to_timestamp(from,len);
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int4store(ptr,tmp);
  }
  else
#endif
    longstore(ptr,tmp);
}


void Field_timestamp::store(double nr)
{
  if (nr < 0 || nr > 99991231235959.0)
  {
    nr=0;					// Avoid overflow on buff
    current_thd->cuted_fields++;
  }
  Field_timestamp::store((longlong) rint(nr));
}


/*
** Convert a datetime of formats YYMMDD, YYYYMMDD or YYMMDDHHMSS to
** YYYYMMDDHHMMSS.  The high date '99991231235959' is checked before this
** function.
*/

static longlong fix_datetime(longlong nr, TIME *time_res)
{
  long part1,part2;
  
  if (nr == LL(0) || nr >= LL(10000101000000))
    goto ok;
  if (nr < 101)
    goto err;
  if (nr <= (YY_PART_YEAR-1)*10000L+1231L)
  {
    nr= (nr+20000000L)*1000000L;                 // YYMMDD, year: 2000-2069
    goto ok;
  }
  if (nr < (YY_PART_YEAR)*10000L+101L)
    goto err;
  if (nr <= 991231L)
  {
    nr= (nr+19000000L)*1000000L;                 // YYMMDD, year: 1970-1999
    goto ok;
  }
  if (nr < 10000101L)
    goto err;
  if (nr <= 99991231L)
  {
    nr= nr*1000000L;
    goto ok;
  }
  if (nr < 101000000L)
    goto err;
  if (nr <= (YY_PART_YEAR-1)*LL(10000000000)+LL(1231235959))
  {
    nr= nr+LL(20000000000000);                   // YYMMDDHHMMSS, 2000-2069
    goto ok;
  }
  if (nr <  YY_PART_YEAR*LL(10000000000)+ LL(101000000))
    goto err;
  if (nr <= LL(991231235959))
    nr= nr+LL(19000000000000);		// YYMMDDHHMMSS, 1970-1999

 ok:
  part1=(long) (nr/LL(1000000));
  part2=(long) (nr - (longlong) part1*LL(1000000));
  time_res->year=  (int) (part1/10000L);  part1%=10000L;
  time_res->month= (int) part1 / 100;
  time_res->day=   (int) part1 % 100;
  time_res->hour=  (int) (part2/10000L);  part2%=10000L;
  time_res->minute=(int) part2 / 100;
  time_res->second=(int) part2 % 100;
    
  if (time_res->year <= 9999 && time_res->month <= 12 && 
      time_res->day <= 31 && time_res->hour <= 23 && 
      time_res->minute <= 59 && time_res->second <= 59)
    return nr;
  
 err:
  current_thd->cuted_fields++;
  return LL(0);
}


void Field_timestamp::store(longlong nr)
{
  TIME l_time;
  time_t timestamp= 0;

  if ((nr= fix_datetime(nr, &l_time)))
  {
    long not_used;
    
    timestamp= my_gmt_sec(&l_time, &not_used);
    
    if (!timestamp)
      current_thd->cuted_fields++;
  }
  
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int4store(ptr,timestamp);
  }
  else
#endif
    longstore(ptr,(uint32) timestamp);
}


double Field_timestamp::val_real(void)
{
  return (double) Field_timestamp::val_int();
}

longlong Field_timestamp::val_int(void)
{
  uint len,pos;
  int part_time;
  uint32 temp;
  time_t time_arg;
  struct tm *l_time;
  longlong res;
  struct tm tm_tmp;

#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    temp=uint4korr(ptr);
  else
#endif
    longget(temp,ptr);

  if (temp == 0L)				// No time
    return(0);					/* purecov: inspected */
  time_arg=(time_t) temp;
  localtime_r(&time_arg,&tm_tmp);
  l_time=&tm_tmp;
  res=(longlong) 0;
  for (pos=len=0; len+1 < (uint) field_length ; len+=2,pos++)
  {
    bool year_flag=0;
    switch (dayord.pos[pos]) {
    case 0: part_time=l_time->tm_year % 100; year_flag=1 ; break;
    case 1: part_time=l_time->tm_mon+1; break;
    case 2: part_time=l_time->tm_mday; break;
    case 3: part_time=l_time->tm_hour; break;
    case 4: part_time=l_time->tm_min; break;
    case 5: part_time=l_time->tm_sec; break;
    default: part_time=0; break; /* purecov: deadcode */
    }
    if (year_flag && (field_length == 8 || field_length == 14))
    {
      res=res*(longlong) 10000+(part_time+
				((part_time < YY_PART_YEAR) ? 2000 : 1900));
      len+=2;
    }
    else
      res=res*(longlong) 100+part_time;
  }
  return (longlong) res;
}


String *Field_timestamp::val_str(String *val_buffer,
				 String *val_ptr __attribute__((unused)))
{
  uint pos;
  int part_time;
  uint32 temp;
  time_t time_arg;
  struct tm *l_time;
  struct tm tm_tmp;
  my_bool new_format= field_length == 19,
          full_year=(field_length == 8 || field_length == 14 || new_format);
  int real_field_length= new_format ? 19 : field_length;

#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    temp=uint4korr(ptr);
  else
#endif
    longget(temp,ptr);

  if (temp == 0L)
  {				      /* Zero time is "000000" */
    if (new_format)
      val_buffer->copy("0000-00-00 00:00:00", real_field_length);
    else
      val_buffer->copy("00000000000000", real_field_length);
    return val_buffer;
  }
  time_arg=(time_t) temp;
  localtime_r(&time_arg,&tm_tmp);
  l_time=&tm_tmp;

  val_buffer->alloc(real_field_length+1);
  char *to=(char*) val_buffer->ptr(),*end=to+real_field_length;

  for (pos=0; to < end ; pos++)
  {
    bool year_flag=0;
    switch (pos) {
    case 0: part_time=l_time->tm_year % 100; year_flag=1; break;
    case 1: part_time=l_time->tm_mon+1; break;
    case 2: part_time=l_time->tm_mday; break;
    case 3: part_time=l_time->tm_hour; break;
    case 4: part_time=l_time->tm_min; break;
    case 5: part_time=l_time->tm_sec; break;
    default: part_time=0; break; /* purecov: deadcode */
    }
    if (year_flag && full_year)
    {
      if (part_time < YY_PART_YEAR)
      {
	*to++='2'; *to++='0'; /* purecov: inspected */
      }
      else
      {
	*to++='1'; *to++='9';
      }
    }
    *to++=(char) ('0'+((uint) part_time/10));
    *to++=(char) ('0'+((uint) part_time % 10));
    if (new_format)
    {
      static const char delim[6]="-- ::";
      *to++=delim[pos];
    }
  }
  if (new_format)
    to--;
  *to=0;					// Safeguard
  val_buffer->length((uint) (to-val_buffer->ptr()));
  return val_buffer;
}

bool Field_timestamp::get_date(TIME *ltime, bool fuzzydate)
{
  long temp;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    temp=uint4korr(ptr);
  else
#endif
    longget(temp,ptr);
  if (temp == 0L)
  {				      /* Zero time is "000000" */
    if (!fuzzydate)
      return 1;
    bzero((char*) ltime,sizeof(*ltime));
  }
  else
  {
    struct tm tm_tmp;
    time_t time_arg= (time_t) temp;
    localtime_r(&time_arg,&tm_tmp);
    struct tm *start= &tm_tmp;
    ltime->year=	start->tm_year+1900;
    ltime->month=	start->tm_mon+1;
    ltime->day=		start->tm_mday;
    ltime->hour=	start->tm_hour;
    ltime->minute=	start->tm_min;
    ltime->second=	start->tm_sec;
    ltime->second_part=	0;
    ltime->neg=		0;
    ltime->time_type=TIMESTAMP_FULL;
  }
  return 0;
}

bool Field_timestamp::get_time(TIME *ltime)
{
  return Field_timestamp::get_date(ltime,0);
}

int Field_timestamp::cmp(const char *a_ptr, const char *b_ptr)
{
  int32 a,b;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    a=sint4korr(a_ptr);
    b=sint4korr(b_ptr);
  }
  else
#endif
  {
  longget(a,a_ptr);
  longget(b,b_ptr);
  }
  return ((uint32) a < (uint32) b) ? -1 : ((uint32) a > (uint32) b) ? 1 : 0;
}

void Field_timestamp::sort_string(char *to,uint length __attribute__((unused)))
{
#ifdef WORDS_BIGENDIAN
  if (!table->db_low_byte_first)
  {
    to[0] = ptr[0];
    to[1] = ptr[1];
    to[2] = ptr[2];
    to[3] = ptr[3];
  }
  else
#endif
  {
    to[0] = ptr[3];
    to[1] = ptr[2];
    to[2] = ptr[1];
    to[3] = ptr[0];
  }
}


void Field_timestamp::sql_type(String &res) const
{
  sprintf((char*) res.ptr(),"timestamp(%d)",(int) field_length);
  res.length((uint) strlen(res.ptr()));
}


void Field_timestamp::set_time()
{
  long tmp= (long) current_thd->query_start();
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int4store(ptr,tmp);
  }
  else
#endif
    longstore(ptr,tmp);
}


/****************************************************************************
** time type
** In string context: HH:MM:SS
** In number context: HHMMSS
** Stored as a 3 byte unsigned int
****************************************************************************/

void Field_time::store(const char *from,uint len)
{
  TIME ltime;
  long tmp;
  if (str_to_time(from,len,&ltime))
    tmp=0L;
  else
  {
    if (ltime.month)
      ltime.day=0;
    tmp=(ltime.day*24L+ltime.hour)*10000L+(ltime.minute*100+ltime.second);
    if (tmp > 8385959)
    {
      tmp=8385959;
      current_thd->cuted_fields++;
    }
  }
  if (ltime.neg)
    tmp= -tmp;
  Field_time::store((longlong) tmp);
}


void Field_time::store(double nr)
{
  long tmp;
  if (nr > 8385959.0)
  {
    tmp=8385959L;
    current_thd->cuted_fields++;
  }
  else if (nr < -8385959.0)
  {
    tmp= -8385959L;
    current_thd->cuted_fields++;
  }
  else
  {
    tmp=(long) floor(fabs(nr));			// Remove fractions
    if (nr < 0)
      tmp= -tmp;
    if (tmp % 100 > 59 || tmp/100 % 100 > 59)
    {
      tmp=0;
      current_thd->cuted_fields++;
    }
  }
  int3store(ptr,tmp);
}


void Field_time::store(longlong nr)
{
  long tmp;
  if (nr > (longlong) 8385959L)
  {
    tmp=8385959L;
    current_thd->cuted_fields++;
  }
  else if (nr < (longlong) -8385959L)
  {
    tmp= -8385959L;
    current_thd->cuted_fields++;
  }
  else
  {
    tmp=(long) nr;
    if (tmp % 100 > 59 || tmp/100 % 100 > 59)
    {
      tmp=0;
      current_thd->cuted_fields++;
    }
  }
  int3store(ptr,tmp);
}


double Field_time::val_real(void)
{
  uint32 j= (uint32) uint3korr(ptr);
  return (double) j;
}

longlong Field_time::val_int(void)
{
  return (longlong) sint3korr(ptr);
}

String *Field_time::val_str(String *val_buffer,
			    String *val_ptr __attribute__((unused)))
{
  val_buffer->alloc(16);
  long tmp=(long) sint3korr(ptr);
  const char *sign="";
  if (tmp < 0)
  {
    tmp= -tmp;
    sign= "-";
  }
  sprintf((char*) val_buffer->ptr(),"%s%02d:%02d:%02d",
	  sign,(int) (tmp/10000), (int) (tmp/100 % 100),
	  (int) (tmp % 100));
  val_buffer->length((uint) strlen(val_buffer->ptr()));
  return val_buffer;
}

bool Field_time::get_date(TIME *ltime,
			  bool fuzzydate  __attribute__((unused)))
{
  long tmp=(long) sint3korr(ptr);
  ltime->neg=0;
  if (tmp < 0)
  {
    ltime->neg= 1;
    tmp=-tmp;
  }
  ltime->hour=tmp/10000;
  tmp-=ltime->hour*10000;
  ltime->minute=   tmp/100;
  ltime->second= tmp % 100;
  ltime->year= ltime->month= ltime->day= ltime->second_part= 0;
  return 0;
}

bool Field_time::get_time(TIME *ltime)
{
  long tmp=(long) sint3korr(ptr);
  ltime->neg=0;
  if (tmp < 0)
  {
    ltime->neg= 1;
    tmp=-tmp;
  }
  ltime->hour=   (int) (tmp/10000);
  tmp-=ltime->hour*10000;
  ltime->minute= (int) tmp/100;
  ltime->second= (int) tmp % 100;
  ltime->second_part=0;
  return 0;
}

int Field_time::cmp(const char *a_ptr, const char *b_ptr)
{
  int32 a,b;
  a=(int32) sint3korr(a_ptr);
  b=(int32) sint3korr(b_ptr);
  return (a < b) ? -1 : (a > b) ? 1 : 0;
}

void Field_time::sort_string(char *to,uint length __attribute__((unused)))
{
  to[0] = (uchar) (ptr[2] ^ 128);
  to[1] = ptr[1];
  to[2] = ptr[0];
}

void Field_time::sql_type(String &res) const
{
  res.set("time",4);
}

/****************************************************************************
** year type
** Save in a byte the year 0, 1901->2155
** Can handle 2 byte or 4 byte years!
****************************************************************************/

void Field_year::store(const char *from, uint len)
{
  String tmp_str(from,len);
  long nr= strtol(tmp_str.c_ptr(),NULL,10);

  if (nr < 0 || nr >= 100 && nr <= 1900 || nr > 2155)
  {
    *ptr=0;
    current_thd->cuted_fields++;
    return;
  }
  if (current_thd->count_cuted_fields && !test_if_int(from,len))
    current_thd->cuted_fields++;
  if (nr != 0 || len != 4)
  {
    if (nr < YY_PART_YEAR)
      nr+=100;					// 2000 - 2069
    else if (nr > 1900)
      nr-= 1900;
  }
  *ptr= (char) (unsigned char) nr;
}

void Field_year::store(double nr)
{
  if (nr < 0.0 || nr >= 2155.0)
    Field_year::store((longlong) -1);
  else
    Field_year::store((longlong) nr);
}

void Field_year::store(longlong nr)
{
  if (nr < 0 || nr >= 100 && nr <= 1900 || nr > 2155)
  {
    *ptr=0;
    current_thd->cuted_fields++;
    return;
  }
  if (nr != 0 || field_length != 4)		// 0000 -> 0; 00 -> 2000
  {
    if (nr < YY_PART_YEAR)
      nr+=100;					// 2000 - 2069
    else if (nr > 1900)
      nr-= 1900;
  }
  *ptr= (char) (unsigned char) nr;
}


double Field_year::val_real(void)
{
  return (double) Field_year::val_int();
}

longlong Field_year::val_int(void)
{
  int tmp= (int) ((uchar*) ptr)[0];
  if (field_length != 4)
    tmp%=100;					// Return last 2 char
  else if (tmp)
    tmp+=1900;
  return (longlong) tmp;
}

String *Field_year::val_str(String *val_buffer,
			    String *val_ptr __attribute__((unused)))
{
  val_buffer->alloc(5);
  val_buffer->length(field_length);
  char *to=(char*) val_buffer->ptr();
  sprintf(to,field_length == 2 ? "%02d" : "%04d",(int) Field_year::val_int());
  return val_buffer;
}

void Field_year::sql_type(String &res) const
{
  sprintf((char*) res.ptr(),"year(%d)",(int) field_length);
  res.length((uint) strlen(res.ptr()));
}


/****************************************************************************
** date type
** In string context: YYYY-MM-DD
** In number context: YYYYMMDD
** Stored as a 4 byte unsigned int
****************************************************************************/

void Field_date::store(const char *from, uint len)
{
  TIME l_time;
  uint32 tmp;
  if (str_to_TIME(from,len,&l_time,1) == TIMESTAMP_NONE)
    tmp=0;
  else
    tmp=(uint32) l_time.year*10000L + (uint32) (l_time.month*100+l_time.day);
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int4store(ptr,tmp);
  }
  else
#endif
    longstore(ptr,tmp);
}


void Field_date::store(double nr)
{
  long tmp;
  if (nr >= 19000000000000.0 && nr <= 99991231235959.0)
    nr=floor(nr/1000000.0);			// Timestamp to date
  if (nr < 0.0 || nr > 99991231.0)
  {
    tmp=0L;
    current_thd->cuted_fields++;
  }
  else
    tmp=(long) rint(nr);
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int4store(ptr,tmp);
  }
  else
#endif
    longstore(ptr,tmp);
}


void Field_date::store(longlong nr)
{
  long tmp;
  if (nr >= LL(19000000000000) && nr < LL(99991231235959))
    nr=nr/LL(1000000);			// Timestamp to date
  if (nr < 0 || nr > LL(99991231))
  {
    tmp=0L;
    current_thd->cuted_fields++;
  }
  else
    tmp=(long) nr;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int4store(ptr,tmp);
  }
  else
#endif
    longstore(ptr,tmp);
}


double Field_date::val_real(void)
{
  int32 j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    j=sint4korr(ptr);
  else
#endif
    longget(j,ptr);
  return (double) (uint32) j;
}

longlong Field_date::val_int(void)
{
  int32 j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    j=sint4korr(ptr);
  else
#endif
    longget(j,ptr);
  return (longlong) (uint32) j;
}

String *Field_date::val_str(String *val_buffer,
			    String *val_ptr __attribute__((unused)))
{
  val_buffer->alloc(field_length);
  val_buffer->length(field_length);
  int32 tmp;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    tmp=sint4korr(ptr);
  else
#endif
    longget(tmp,ptr);
  sprintf((char*) val_buffer->ptr(),"%04d-%02d-%02d",
	  (int) ((uint32) tmp/10000L % 10000), (int) ((uint32) tmp/100 % 100),
	  (int) ((uint32) tmp % 100));
  return val_buffer;
}

int Field_date::cmp(const char *a_ptr, const char *b_ptr)
{
  int32 a,b;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    a=sint4korr(a_ptr);
    b=sint4korr(b_ptr);
  }
  else
#endif
  {
    longget(a,a_ptr);
    longget(b,b_ptr);
  }
  return ((uint32) a < (uint32) b) ? -1 : ((uint32) a > (uint32) b) ? 1 : 0;
}


void Field_date::sort_string(char *to,uint length __attribute__((unused)))
{
#ifdef WORDS_BIGENDIAN
  if (!table->db_low_byte_first)
  {
    to[0] = ptr[0];
    to[1] = ptr[1];
    to[2] = ptr[2];
    to[3] = ptr[3];
  }
  else
#endif
  {
    to[0] = ptr[3];
    to[1] = ptr[2];
    to[2] = ptr[1];
    to[3] = ptr[0];
  }
}

void Field_date::sql_type(String &res) const
{
  res.set("date",4);
}

/****************************************************************************
** The new date type
** This is identical to the old date type, but stored on 3 bytes instead of 4
** In number context: YYYYMMDD
****************************************************************************/

void Field_newdate::store(const char *from,uint len)
{
  TIME l_time;
  long tmp;
  if (str_to_TIME(from,len,&l_time,1) == TIMESTAMP_NONE)
    tmp=0L;
  else
    tmp= l_time.day + l_time.month*32 + l_time.year*16*32;
  int3store(ptr,tmp);
}

void Field_newdate::store(double nr)
{
  if (nr < 0.0 || nr > 99991231235959.0)
    Field_newdate::store((longlong) -1);
  else
    Field_newdate::store((longlong) rint(nr));
}


void Field_newdate::store(longlong nr)
{
  int32 tmp;
  if (nr >= LL(100000000) && nr <= LL(99991231235959))
    nr=nr/LL(1000000);			// Timestamp to date
  if (nr < 0L || nr > 99991231L)
  {
    tmp=0;
    current_thd->cuted_fields++;
  }
  else
  {
    tmp=(int32) nr;
    if (tmp)
    {
      if (tmp < YY_PART_YEAR*10000L)			// Fix short dates
	tmp+= (uint32) 20000000L;
      else if (tmp < 999999L)
	tmp+= (uint32) 19000000L;
    }
    uint month= (uint) ((tmp/100) % 100);
    uint day=   (uint) (tmp%100);
    if (month > 12 || day > 31)
    {
      tmp=0L;					// Don't allow date to change
      current_thd->cuted_fields++;
    }
    else
      tmp= day + month*32 + (tmp/10000)*16*32;
  }
  int3store(ptr,(int32) tmp);
}

void Field_newdate::store_time(TIME *ltime,timestamp_type type)
{
  long tmp;
  if (type == TIMESTAMP_DATE || type == TIMESTAMP_FULL)
    tmp=ltime->year*16*32+ltime->month*32+ltime->day;
  else
  {
    tmp=0;
    current_thd->cuted_fields++;
  }
  int3store(ptr,tmp);
}



double Field_newdate::val_real(void)
{
  return (double) Field_newdate::val_int();
}

longlong Field_newdate::val_int(void)
{
  ulong j= uint3korr(ptr);
  j= (j % 32L)+(j / 32L % 16L)*100L + (j/(16L*32L))*10000L;
  return (longlong) j;
}

String *Field_newdate::val_str(String *val_buffer,
			       String *val_ptr __attribute__((unused)))
{
  val_buffer->alloc(field_length);
  val_buffer->length(field_length);
  uint32 tmp=(uint32) uint3korr(ptr);
  int part;
  char *pos=(char*) val_buffer->ptr()+10;

  /* Open coded to get more speed */
  *pos--=0;					// End NULL
  part=(int) (tmp & 31);
  *pos--= (char) ('0'+part%10);
  *pos--= (char) ('0'+part/10);
  *pos--= '-';
  part=(int) (tmp >> 5 & 15);
  *pos--= (char) ('0'+part%10);
  *pos--= (char) ('0'+part/10);
  *pos--= '-';
  part=(int) (tmp >> 9);
  *pos--= (char) ('0'+part%10); part/=10;
  *pos--= (char) ('0'+part%10); part/=10;
  *pos--= (char) ('0'+part%10); part/=10;
  *pos=   (char) ('0'+part);
  return val_buffer;
}

bool Field_newdate::get_date(TIME *ltime,bool fuzzydate)
{
  if (is_null())
    return 1;
  uint32 tmp=(uint32) uint3korr(ptr);
  ltime->day=   tmp & 31;
  ltime->month= (tmp >> 5) & 15;
  ltime->year=  (tmp >> 9);
  ltime->time_type=TIMESTAMP_DATE;
  ltime->hour= ltime->minute= ltime->second= ltime->second_part= 0;
  return (!fuzzydate && (!ltime->month || !ltime->day)) ? 1 : 0;
}

bool Field_newdate::get_time(TIME *ltime)
{
  return Field_newdate::get_date(ltime,0);
}

int Field_newdate::cmp(const char *a_ptr, const char *b_ptr)
{
  uint32 a,b;
  a=(uint32) uint3korr(a_ptr);
  b=(uint32) uint3korr(b_ptr);
  return (a < b) ? -1 : (a > b) ? 1 : 0;
}

void Field_newdate::sort_string(char *to,uint length __attribute__((unused)))
{
  to[0] = ptr[2];
  to[1] = ptr[1];
  to[2] = ptr[0];
}

void Field_newdate::sql_type(String &res) const
{
  res.set("date",4);
}


/****************************************************************************
** datetime type
** In string context: YYYY-MM-DD HH:MM:DD
** In number context: YYYYMMDDHHMMDD
** Stored as a 8 byte unsigned int. Should sometimes be change to a 6 byte int.
****************************************************************************/

void Field_datetime::store(const char *from,uint len)
{
  longlong tmp=str_to_datetime(from,len,1);
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int8store(ptr,tmp);
  }
  else
#endif
    longlongstore(ptr,tmp);
}


void Field_datetime::store(double nr)
{
  if (nr < 0.0 || nr > 99991231235959.0)
  {
    nr=0.0;
    current_thd->cuted_fields++;
  }
  Field_datetime::store((longlong) rint(nr));
}


void Field_datetime::store(longlong nr)
{
  TIME not_used;
  
  nr= fix_datetime(nr, &not_used);
  
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int8store(ptr,nr);
  }
  else
#endif
    longlongstore(ptr,nr);
}

void Field_datetime::store_time(TIME *ltime,timestamp_type type)
{
  longlong tmp;
  if (type == TIMESTAMP_DATE || type == TIMESTAMP_FULL)
    tmp=((ltime->year*10000L+ltime->month*100+ltime->day)*LL(1000000)+
	 (ltime->hour*10000L+ltime->minute*100+ltime->second));
  else
  {
    tmp=0;
    current_thd->cuted_fields++;
  }
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int8store(ptr,tmp);
  }
  else
#endif
    longlongstore(ptr,tmp);
}


double Field_datetime::val_real(void)
{
  return (double) Field_datetime::val_int();
}

longlong Field_datetime::val_int(void)
{
  longlong j;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    j=sint8korr(ptr);
  else
#endif
    longlongget(j,ptr);
  return j;
}


String *Field_datetime::val_str(String *val_buffer,
				String *val_ptr __attribute__((unused)))
{
  val_buffer->alloc(field_length);
  val_buffer->length(field_length);
  ulonglong tmp;
  long part1,part2;
  char *pos;
  int part3;

#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
    tmp=sint8korr(ptr);
  else
#endif
    longlongget(tmp,ptr);

  /*
    Avoid problem with slow longlong aritmetic and sprintf
  */

  part1=(long) (tmp/LL(1000000));
  part2=(long) (tmp - (ulonglong) part1*LL(1000000));

  pos=(char*) val_buffer->ptr()+19;
  *pos--=0;
  *pos--= (char) ('0'+(char) (part2%10)); part2/=10;
  *pos--= (char) ('0'+(char) (part2%10)); part3= (int) (part2 / 10);
  *pos--= ':';
  *pos--= (char) ('0'+(char) (part3%10)); part3/=10;
  *pos--= (char) ('0'+(char) (part3%10)); part3/=10;
  *pos--= ':';
  *pos--= (char) ('0'+(char) (part3%10)); part3/=10;
  *pos--= (char) ('0'+(char) part3);
  *pos--= ' ';
  *pos--= (char) ('0'+(char) (part1%10)); part1/=10;
  *pos--= (char) ('0'+(char) (part1%10)); part1/=10;
  *pos--= '-';
  *pos--= (char) ('0'+(char) (part1%10)); part1/=10;
  *pos--= (char) ('0'+(char) (part1%10)); part3= (int) (part1/10);
  *pos--= '-';
  *pos--= (char) ('0'+(char) (part3%10)); part3/=10;
  *pos--= (char) ('0'+(char) (part3%10)); part3/=10;
  *pos--= (char) ('0'+(char) (part3%10)); part3/=10;
  *pos=(char) ('0'+(char) part3);
  return val_buffer;
}

bool Field_datetime::get_date(TIME *ltime,bool fuzzydate)
{
  longlong tmp=Field_datetime::val_int();
  uint32 part1,part2;
  part1=(uint32) (tmp/LL(1000000));
  part2=(uint32) (tmp - (ulonglong) part1*LL(1000000));

  ltime->time_type=	TIMESTAMP_FULL;
  ltime->neg=		0;
  ltime->second_part=	0;
  ltime->second=	(int) (part2%100);
  ltime->minute=	(int) (part2/100%100);
  ltime->hour=		(int) (part2/10000);
  ltime->day=		(int) (part1%100);
  ltime->month= 	(int) (part1/100%100);
  ltime->year= 		(int) (part1/10000);
  return (!fuzzydate && (!ltime->month || !ltime->day)) ? 1 : 0;
}

bool Field_datetime::get_time(TIME *ltime)
{
  return Field_datetime::get_date(ltime,0);
}

int Field_datetime::cmp(const char *a_ptr, const char *b_ptr)
{
  longlong a,b;
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    a=sint8korr(a_ptr);
    b=sint8korr(b_ptr);
  }
  else
#endif
  {
    longlongget(a,a_ptr);
    longlongget(b,b_ptr);
  }
  return ((ulonglong) a < (ulonglong) b) ? -1 :
    ((ulonglong) a > (ulonglong) b) ? 1 : 0;
}

void Field_datetime::sort_string(char *to,uint length __attribute__((unused)))
{
#ifdef WORDS_BIGENDIAN
  if (!table->db_low_byte_first)
  {
    to[0] = ptr[0];
    to[1] = ptr[1];
    to[2] = ptr[2];
    to[3] = ptr[3];
    to[4] = ptr[4];
    to[5] = ptr[5];
    to[6] = ptr[6];
    to[7] = ptr[7];
  }
  else
#endif
  {
    to[0] = ptr[7];
    to[1] = ptr[6];
    to[2] = ptr[5];
    to[3] = ptr[4];
    to[4] = ptr[3];
    to[5] = ptr[2];
    to[6] = ptr[1];
    to[7] = ptr[0];
  }
}


void Field_datetime::sql_type(String &res) const
{
  res.set("datetime",8);
}

/****************************************************************************
** string type
** A string may be varchar or binary
****************************************************************************/

	/* Copy a string and fill with space */

void Field_string::store(const char *from,uint length)
{
#ifdef USE_TIS620
  if (!binary_flag) {
    ThNormalize((uchar *)ptr, field_length, (uchar *)from, length);
    if (length < field_length) {
      bfill(ptr + length, field_length - length, ' ');
    }
  }
#else
  if (length <= field_length)
  {
    memcpy(ptr,from,length);
    if (length < field_length)
      bfill(ptr+length,field_length-length,' ');
  }
  else
  {
    memcpy(ptr,from,field_length);
    if (current_thd->count_cuted_fields)
    {						// Check if we loosed some info
      const char *end=from+length;
      for (from+=field_length ; from != end ; from++)
      {
	if (!isspace(*from))
	{
	  current_thd->cuted_fields++;
	  break;
	}
      }
    }
  }
#endif /* USE_TIS620 */
}


/*
  Store double value in Field_string or Field_varstring.

  SYNOPSIS
    store_double_in_string_field()
    field         field to store value in
    field_length  number of characters in the field
    nr            number

  DESCRIPTION
    Pretty prints double number into field_length characters buffer.
*/

static void store_double_in_string_field(Field_str *field, uint32 field_length,
                                         double nr)
{
  bool use_scientific_notation=TRUE;
  char buff[DOUBLE_TO_STRING_CONVERSION_BUFFER_SIZE];
  uint length;
  if (field_length < 32 && nr > 1)
  {
    if (field->ceiling == 0)
    {
      static double e[]= {1e1, 1e2, 1e4, 1e8, 1e16 };
      double p= 1;
      for (int i= sizeof(e)/sizeof(e[0]), j= 1<<i ; j; i--,  j>>= 1 )
      {
        if (field_length & j)
          p*= e[i];
      }
      field->ceiling= p-1;
    }
    use_scientific_notation= (field->ceiling < nr);
  }
  length= (uint)sprintf(buff, "%-.*g",
                        use_scientific_notation ? max(0,(int)field_length-5) : field_length,
                        nr);
  /*
    +1 below is because "precision" in %g above means the
    max. number of significant digits, not the output width.
    Thus the width can be larger than number of significant digits by 1
    (for decimal point)
    the test for field_length < 5 is for extreme cases,
    like inserting 500.0 in char(1)
  */
  DBUG_ASSERT(field_length < 5 || length <= field_length+1);
  field->store(buff, min(length, field_length));
}

void Field_string::store(double nr)
{
  store_double_in_string_field(this, field_length, nr);
}


void Field_string::store(longlong nr)
{
  char buff[22];
  char *end=longlong10_to_str(nr,buff,-10);
  Field_string::store(buff,(uint) (end-buff));
}


double Field_string::val_real(void)
{
  double value;
  char save=ptr[field_length];			// Ok to patch record
  ptr[field_length]=0;
  value=atof(ptr);
  ptr[field_length]=save;
  return value;
}


longlong Field_string::val_int(void)
{
  longlong value;
  char save=ptr[field_length];			// Ok to patch record
  ptr[field_length]=0;
  value=strtoll(ptr,NULL,10);
  ptr[field_length]=save;
  return value;
}


String *Field_string::val_str(String *val_buffer __attribute__((unused)),
			      String *val_ptr)
{
  char *end=ptr+field_length;
#ifdef WANT_TRUE_BINARY_STRINGS
  if (!binary)
#endif
    while (end > ptr && end[-1] == ' ')
      end--;
  val_ptr->set((const char*) ptr,(uint) (end - ptr));
  return val_ptr;
}


int Field_string::cmp(const char *a_ptr, const char *b_ptr)
{
  if (binary_flag)
    return memcmp(a_ptr,b_ptr,field_length);
#ifdef USE_STRCOLL
  if (use_strcoll(default_charset_info))
  {
    /*
      We have to remove end space to be able to compare multi-byte-characters
      like in latin_de 'ae' and 0xe4
    */
    uint a_length= field_length_without_space(a_ptr, field_length);
    uint b_length= field_length_without_space(b_ptr, field_length);
    return my_strnncoll(default_charset_info,
			(const uchar*) a_ptr, a_length,
			(const uchar*) b_ptr, b_length);
  }
#endif
  return my_sortcmp(a_ptr,b_ptr,field_length);
}

void Field_string::sort_string(char *to,uint length)
{
  if (binary_flag)
    memcpy((byte*) to,(byte*) ptr,(size_t) length);
  else
  {
#ifdef USE_STRCOLL
    if (use_strcoll(default_charset_info)) {
      uint tmp=my_strnxfrm(default_charset_info,
                          (unsigned char *)to, (unsigned char *) ptr,
                          length, field_length);
      if (tmp < length)
        bzero(to + tmp, length - tmp);
    }
    else
#endif
      for (char *from=ptr,*end=ptr+length ; from != end ;)
        *to++=(char) my_sort_order[(uint) (uchar) *from++];
  }
}


void Field_string::sql_type(String &res) const
{
  sprintf((char*) res.ptr(),"%s(%d)",
	  field_length > 3 &&
	  (table->db_options_in_use & HA_OPTION_PACK_RECORD) ?
	  "varchar" : "char",
	  (int) field_length);
  res.length((uint) strlen(res.ptr()));
  if (binary_flag)
    res.append(" binary");
}


char *Field_string::pack(char *to, const char *from, uint max_length)
{
  const char *end=from+min(field_length,max_length);
  uchar length;
  while (end > from && end[-1] == ' ')
    end--;
  *to= length=(uchar) (end-from);
  memcpy(to+1, from, (int) length);
  return to+1+length;
}


const char *Field_string::unpack(char *to, const char *from)
{
  uint length= (uint) (uchar) *from++;
  memcpy(to, from, (int) length);
  bfill(to+length, field_length - length, ' ');
  return from+length;
}


int Field_string::pack_cmp(const char *a, const char *b, uint length)
{
  uint a_length= (uint) (uchar) *a++;
  uint b_length= (uint) (uchar) *b++;

  if (binary_flag)
  {
    int cmp= memcmp(a,b,min(a_length,b_length));
    return cmp ? cmp : (int) (a_length - b_length);
  }
  return my_sortncmp(a,a_length, b,b_length);
}


int Field_string::pack_cmp(const char *b, uint length)
{
  uint b_length= (uint) (uchar) *b++;
  char *end= ptr + field_length;
  while (end > ptr && end[-1] == ' ')
    end--;
  uint a_length = (uint) (end - ptr);

  if (binary_flag)
  {
    int cmp= memcmp(ptr,b,min(a_length,b_length));
    return cmp ? cmp : (int) (a_length - b_length);
  }
  return my_sortncmp(ptr,a_length, b, b_length);
}


uint Field_string::packed_col_length(const char *data_ptr, uint length)
{
  if (length > 255)
    return uint2korr(data_ptr)+2;
  else
    return (uint) ((uchar) *data_ptr)+1;
}

uint Field_string::max_packed_col_length(uint max_length)
{
  return (max_length > 255 ? 2 : 1)+max_length;
}


/****************************************************************************
** VARCHAR type  (Not available for the end user yet)
****************************************************************************/


void Field_varstring::store(const char *from,uint length)
{
#ifdef USE_TIS620
  if (!binary_flag)
  {
    ThNormalize((uchar *) ptr+2, field_length, (uchar *) from, length);
  }
#else
  if (length <= field_length)
  {
    memcpy(ptr+2,from,length);
  }
  else
  {
    length=field_length;
    memcpy(ptr+2,from,field_length);
    current_thd->cuted_fields++;
  }
#endif /* USE_TIS620 */
  int2store(ptr,length);
}


void Field_varstring::store(double nr)
{
  store_double_in_string_field(this, field_length, nr);
}


void Field_varstring::store(longlong nr)
{
  char buff[22];
  char *end=longlong10_to_str(nr,buff,-10);
  Field_varstring::store(buff,(uint) (end-buff));
}


double Field_varstring::val_real(void)
{
  double value;
  uint length=uint2korr(ptr)+2;
  char save=ptr[length];			// Ok to patch record
  ptr[length]=0;
  value=atof(ptr+2);
  ptr[length]=save;
  return value;
}


longlong Field_varstring::val_int(void)
{
  longlong value;
  uint length=uint2korr(ptr)+2;
  char save=ptr[length];			// Ok to patch record
  ptr[length]=0;
  value=strtoll(ptr+2,NULL,10);
  ptr[length]=save;
  return value;
}


String *Field_varstring::val_str(String *val_buffer __attribute__((unused)),
				 String *val_ptr)
{
  uint length=uint2korr(ptr);
  val_ptr->set((const char*) ptr+2,length);
  return val_ptr;
}


int Field_varstring::cmp(const char *a_ptr, const char *b_ptr)
{
  uint a_length=uint2korr(a_ptr);
  uint b_length=uint2korr(b_ptr);
  int diff;
  if (binary_flag)
    diff=memcmp(a_ptr+2,b_ptr+2,min(a_length,b_length));
  else
    diff=my_sortcmp(a_ptr+2,b_ptr+2,min(a_length,b_length));
  return diff ? diff : (int) (a_length - b_length);
}

void Field_varstring::sort_string(char *to,uint length)
{
  uint tot_length=uint2korr(ptr);
  if (binary_flag)
    memcpy((byte*) to,(byte*) ptr+2,(size_t) tot_length);
  else
  {
#ifdef USE_STRCOLL
    if (use_strcoll(default_charset_info))
      tot_length=my_strnxfrm(default_charset_info,
                             (unsigned char *) to, (unsigned char *)ptr+2,
                             length, tot_length);
    else
    {
#endif
      char *tmp=to;
      if (tot_length > length)
        tot_length=length;
      for (char *from=ptr+2,*end=from+tot_length ; from != end ;)
        *tmp++=(char) my_sort_order[(uint) (uchar) *from++];
#ifdef USE_STRCOLL
    }
#endif
  }
  if (tot_length < length)
    bzero(to+tot_length,length-tot_length);
}


void Field_varstring::sql_type(String &res) const
{
  sprintf((char*) res.ptr(),"varchar(%d)",(int) field_length);
  res.length((uint) strlen(res.ptr()));
  if (binary_flag)
    res.append(" binary");
}

char *Field_varstring::pack(char *to, const char *from, uint max_length)
{
  uint length=uint2korr(from);
  if (length > max_length)
    length=max_length;
  *to++= (char) (length & 255);
  if (max_length > 255)
    *to++= (char) (length >> 8);
  if (length)
    memcpy(to, from+2, length);
  return to+length;
}


const char *Field_varstring::unpack(char *to, const char *from)
{
  uint length;
  if (field_length > 255)
  {
    length= (uint) (uchar) (*to= *from++);
    to[1]=0;
  }
  else
  {
    length=uint2korr(from);
    to[0] = *from++;
    to[1] = *from++;
  }
  if (length)
    memcpy(to+2, from, length);
  return from+length;
}


int Field_varstring::pack_cmp(const char *a, const char *b, uint key_length)
{
  uint a_length;
  uint b_length;
  if (key_length > 255)
  {
    a_length=uint2korr(a); a+=2;
    b_length=uint2korr(b); b+=2;
  }
  else
  {
    a_length= (uint) (uchar) *a++;
    b_length= (uint) (uchar) *b++;
  }
  if (binary_flag)
  {
    int cmp= memcmp(a,b,min(a_length,b_length));
    return cmp ? cmp : (int) (a_length - b_length);
  }
  return my_sortncmp(a,a_length, b,b_length);
}

int Field_varstring::pack_cmp(const char *b, uint key_length)
{
  char *a=ptr+2;
  uint a_length=uint2korr(ptr);
  uint b_length;
  if (key_length > 255)
  {
    b_length=uint2korr(b); b+=2;
  }
  else
  {
    b_length= (uint) (uchar) *b++;
  }
  if (binary_flag)
  {
    int cmp= memcmp(a,b,min(a_length,b_length));
    return cmp ? cmp : (int) (a_length - b_length);
  }
  return my_sortncmp(a,a_length, b,b_length);
}

uint Field_varstring::packed_col_length(const char *data_ptr, uint length)
{
  if (length > 255)
    return uint2korr(data_ptr)+2;
  else
    return (uint) ((uchar) *data_ptr)+1;
}

uint Field_varstring::max_packed_col_length(uint max_length)
{
  return (max_length > 255 ? 2 : 1)+max_length;
}

/****************************************************************************
** blob type
** A blob is saved as a length and a pointer. The length is stored in the
** packlength slot and may be from 1-4.
****************************************************************************/

Field_blob::Field_blob(char *ptr_arg, uchar *null_ptr_arg, uchar null_bit_arg,
		       enum utype unireg_check_arg, const char *field_name_arg,
		       struct st_table *table_arg,uint blob_pack_length,
		       bool binary_arg)
  :Field_str(ptr_arg, (1L << min(blob_pack_length,3)*8)-1L,
	     null_ptr_arg, null_bit_arg, unireg_check_arg, field_name_arg,
	     table_arg),
   packlength(blob_pack_length),binary_flag(binary_arg)
{
  flags|= BLOB_FLAG;
  if (binary_arg)
    flags|=BINARY_FLAG;
  if (table)
    table->blob_fields++;
}


void Field_blob::store_length(uint32 number)
{
  switch (packlength) {
  case 1:
    if (number > 255)
    {
      number=255;
      current_thd->cuted_fields++;
    }
    ptr[0]= (uchar) number;
    break;
  case 2:
    if (number > (uint16) ~0)
    {
      number= (uint16) ~0;
      current_thd->cuted_fields++;
    }
#ifdef WORDS_BIGENDIAN
    if (table->db_low_byte_first)
    {
      int2store(ptr,(unsigned short) number);
    }
    else
#endif
      shortstore(ptr,(unsigned short) number);
    break;
  case 3:
    if (number > (uint32) (1L << 24))
    {
      number= (uint32) (1L << 24)-1L;
      current_thd->cuted_fields++;
    }
    int3store(ptr,number);
    break;
  case 4:
#ifdef WORDS_BIGENDIAN
    if (table->db_low_byte_first)
    {
      int4store(ptr,number);
    }
    else
#endif
      longstore(ptr,number);
  }
}


uint32 Field_blob::get_length(const char *pos)
{
  switch (packlength) {
  case 1:
    return (uint32) (uchar) pos[0];
  case 2:
    {
      uint16 tmp;
#ifdef WORDS_BIGENDIAN
      if (table->db_low_byte_first)
	tmp=sint2korr(pos);
      else
#endif
	shortget(tmp,pos);
      return (uint32) tmp;
    }
  case 3:
    return (uint32) uint3korr(pos);
  case 4:
    {
      uint32 tmp;
#ifdef WORDS_BIGENDIAN
      if (table->db_low_byte_first)
	tmp=uint4korr(pos);
      else
#endif
	longget(tmp,pos);
      return (uint32) tmp;
    }
  }
  return 0;					// Impossible
}


/*
  Put a blob length field into a record buffer.

  SYNOPSIS
    Field_blob::put_length()
    pos                         Pointer into the record buffer.
    length                      The length value to put.

  DESCRIPTION
    Depending on the maximum length of a blob, its length field is
    put into 1 to 4 bytes. This is a property of the blob object,
    described by 'packlength'.

  RETURN
    nothing
*/

void Field_blob::put_length(char *pos, uint32 length)
{
  switch (packlength) {
  case 1:
    *pos= (char) length;
    break;
  case 2:
    int2store(pos, length);
    break;
  case 3:
    int3store(pos, length);
    break;
  case 4:
    int4store(pos, length);
    break;
  }
}


void Field_blob::store(const char *from,uint len)
{
  if (!len)
  {
    bzero(ptr,Field_blob::pack_length());
  }
  else
  {
#ifdef USE_TIS620
    char *th_ptr=0;
#endif
    Field_blob::store_length(len);
    if (table->copy_blobs || len <= MAX_FIELD_WIDTH)
    {						// Must make a copy
#ifdef USE_TIS620
      if (!binary_flag)
      {
	/* If there isn't enough memory, use original string */
	if ((th_ptr=(char * ) my_malloc(sizeof(char) * len,MYF(0))))
	{
	  ThNormalize((uchar *) th_ptr, len, (uchar *) from, len);
	  from= (const char*) th_ptr;
	}
      }
#endif /* USE_TIS620 */
      if (from != value.ptr())			// For valgrind
      {
	value.copy(from, len);
	from= value.ptr();
      }
#ifdef USE_TIS620
      my_free(th_ptr,MYF(MY_ALLOW_ZERO_PTR));
#endif
    }
    bmove(ptr+packlength,(char*) &from,sizeof(char*));
  }
}


void Field_blob::store(double nr)
{
  value.set(nr);
  Field_blob::store(value.ptr(),(uint) value.length());
}


void Field_blob::store(longlong nr)
{
  value.set(nr);
  Field_blob::store(value.ptr(), (uint) value.length());
}


double Field_blob::val_real(void)
{
  char *blob;

  memcpy_fixed(&blob,ptr+packlength,sizeof(char*));
  if (!blob)
    return 0.0;
  uint32 length=get_length(ptr);

  char save=blob[length];			// Ok to patch blob in NISAM
  blob[length]=0;
  double nr=atof(blob);
  blob[length]=save;
  return nr;
}


longlong Field_blob::val_int(void)
{
  char *blob;
  memcpy_fixed(&blob,ptr+packlength,sizeof(char*));
  if (!blob)
    return 0;
  uint32 length=get_length(ptr);

  char save=blob[length];			// Ok to patch blob in NISAM
  blob[length]=0;
  longlong nr=strtoll(blob,NULL,10);
  blob[length]=save;
  return nr;
}


String *Field_blob::val_str(String *val_buffer __attribute__((unused)),
			    String *val_ptr)
{
  char *blob;
  memcpy_fixed(&blob,ptr+packlength,sizeof(char*));
  if (!blob)
    val_ptr->set("",0);				// A bit safer than ->length(0)
  else
    val_ptr->set((const char*) blob,get_length(ptr));
  return val_ptr;
}


int Field_blob::cmp(const char *a,uint32 a_length, const char *b,
		    uint32 b_length)
{
  int diff;
  if (binary_flag)
    diff=memcmp(a,b,min(a_length,b_length));
  else
    diff=my_sortcmp(a,b,min(a_length,b_length));
  return diff ? diff : (int) (a_length - b_length);
}


int Field_blob::cmp(const char *a_ptr, const char *b_ptr)
{
  char *blob1,*blob2;
  memcpy_fixed(&blob1,a_ptr+packlength,sizeof(char*));
  memcpy_fixed(&blob2,b_ptr+packlength,sizeof(char*));
  return Field_blob::cmp(blob1,get_length(a_ptr),
			 blob2,get_length(b_ptr));
}


int Field_blob::cmp_offset(uint row_offset)
{
  return Field_blob::cmp(ptr,ptr+row_offset);
}


int Field_blob::cmp_binary_offset(uint row_offset)
{
  return cmp_binary(ptr, ptr+row_offset);
}


int Field_blob::cmp_binary(const char *a_ptr, const char *b_ptr,
			   uint32 max_length)
{
  char *a,*b;
  uint diff;
  uint32 a_length,b_length;
  memcpy_fixed(&a,a_ptr+packlength,sizeof(char*));
  memcpy_fixed(&b,b_ptr+packlength,sizeof(char*));
  a_length=get_length(a_ptr);
  if (a_length > max_length)
    a_length=max_length;
  b_length=get_length(b_ptr);
  if (b_length > max_length)
    b_length=max_length;
  diff=memcmp(a,b,min(a_length,b_length));
  return diff ? diff : (int) (a_length - b_length);
}


/* The following is used only when comparing a key */

void Field_blob::get_key_image(char *buff,uint length)
{
  length-=HA_KEY_BLOB_LENGTH;
  uint32 blob_length=get_length(ptr);
  char *blob;
  if ((uint32) length > blob_length)
  {
    /*
      Must clear this as we do a memcmp in opt_range.cc to detect
      identical keys
    */
    bzero(buff+2+blob_length, (length-blob_length));
    length=(uint) blob_length;
  }
  int2store(buff,length);
  get_ptr(&blob);
  memcpy(buff+2,blob,length);
}

void Field_blob::set_key_image(char *buff,uint length)
{
  length=uint2korr(buff);
  Field_blob::store(buff+2,length);
}

int Field_blob::key_cmp(const byte *key_ptr, uint max_key_length)
{
  char *blob1;
  uint blob_length=get_length(ptr);
  max_key_length-=2;
  memcpy_fixed(&blob1,ptr+packlength,sizeof(char*));
  return Field_blob::cmp(blob1,min(blob_length, max_key_length),
			 (char*) key_ptr+2,uint2korr(key_ptr));
}

int Field_blob::key_cmp(const byte *a,const byte *b)
{
  return Field_blob::cmp((char*) a+2,uint2korr(a),
			 (char*) b+2,uint2korr(b));
}


void Field_blob::sort_string(char *to,uint length)
{
  char *blob;
  uint blob_length=get_length();
#ifdef USE_STRCOLL
  uint blob_org_length=blob_length;
#endif
  if (!blob_length)
    bzero(to,length);
  else
  {
    if (blob_length > length)
      blob_length=length;
    memcpy_fixed(&blob,ptr+packlength,sizeof(char*));
    if (binary_flag)
    {
      memcpy(to,blob,blob_length);
      to+=blob_length;
    }
    else
    {
#ifdef USE_STRCOLL
      if (use_strcoll(default_charset_info))
      {
        blob_length=my_strnxfrm(default_charset_info,
                                (unsigned char *)to,(unsigned char *)blob,
                                length,blob_org_length);
        if (blob_length >= length)
          return;
        to+=blob_length;
      }
      else
#endif
        for (char *end=blob+blob_length ; blob != end ;)
          *to++=(char) my_sort_order[(uint) (uchar) *blob++];
    }
    bzero(to,length-blob_length);
  }
}


void Field_blob::sql_type(String &res) const
{
  const char *str;
  switch (packlength) {
  default: str="tiny"; break;
  case 2:  str=""; break;
  case 3:  str="medium"; break;
  case 4:  str="long"; break;
  }
  res.set(str,(uint) strlen(str));
  res.append(binary_flag ? "blob" : "text");
}


char *Field_blob::pack(char *to, const char *from, uint max_length)
{
  char *save=ptr;
  ptr=(char*) from;
  uint32 length=get_length();			// Length of from string
  if (length > max_length)
  {
    ptr=to;
    length=max_length;
    store_length(length);			// Store max length
    ptr=(char*) from;
  }
  else
    memcpy(to,from,packlength);			// Copy length
  if (length)
  {
    get_ptr((char**) &from);
    memcpy(to+packlength, from,length);
  }
  ptr=save;					// Restore org row pointer
  return to+packlength+length;
}


const char *Field_blob::unpack(char *to, const char *from)
{
  memcpy(to,from,packlength);
  uint32 length=get_length(from);
  from+=packlength;
  if (length)
    memcpy_fixed(to+packlength, &from, sizeof(from));
  else
    bzero(to+packlength,sizeof(from));
  return from+length;
}

/* Keys for blobs are like keys on varchars */

int Field_blob::pack_cmp(const char *a, const char *b, uint key_length)
{
  uint a_length;
  uint b_length;
  if (key_length > 255)
  {
    a_length=uint2korr(a); a+=2;
    b_length=uint2korr(b); b+=2;
  }
  else
  {
    a_length= (uint) (uchar) *a++;
    b_length= (uint) (uchar) *b++;
  }
  if (binary_flag)
  {
    int cmp= memcmp(a,b,min(a_length,b_length));
    return cmp ? cmp : (int) (a_length - b_length);
  }
  return my_sortncmp(a,a_length, b,b_length);
}


int Field_blob::pack_cmp(const char *b, uint key_length)
{
  char *a;
  memcpy_fixed(&a,ptr+packlength,sizeof(char*));
  if (!a)
    return key_length > 0 ? -1 : 0;
  uint a_length=get_length(ptr);
  uint b_length;

  if (key_length > 255)
  {
    b_length=uint2korr(b); b+=2;
  }
  else
  {
    b_length= (uint) (uchar) *b++;
  }
  if (binary_flag)
  {
    int cmp= memcmp(a,b,min(a_length,b_length));
    return cmp ? cmp : (int) (a_length - b_length);
  }
  return my_sortncmp(a,a_length, b,b_length);
}

/* Create a packed key that will be used for storage from a MySQL row */

char *Field_blob::pack_key(char *to, const char *from, uint max_length)
{
  char *save=ptr;
  ptr=(char*) from;
  uint32 length=get_length();			// Length of from string
  if (length > max_length)
    length=max_length;
  *to++= (uchar) length;
  if (max_length > 255)				// 2 byte length
    *to++= (uchar) (length >> 8);
  if (length)
  {
    get_ptr((char**) &from);
    memcpy(to, from, length);
  }
  ptr=save;					// Restore org row pointer
  return to+length;
}


/*
  Unpack a blob key into a record buffer.

  SYNOPSIS
    Field_blob::unpack_key()
    to                          Pointer into the record buffer.
    from                        Pointer to the packed key.
    max_length                  Key length limit from key description.

  DESCRIPTION
    A blob key has a maximum size of 64K-1.
    In its packed form, the length field is one or two bytes long,
    depending on 'max_length'.
    Depending on the maximum length of a blob, its length field is
    put into 1 to 4 bytes. This is a property of the blob object,
    described by 'packlength'.
    Blobs are internally stored apart from the record buffer, which
    contains a pointer to the blob buffer.

  RETURN
    Pointer into 'from' past the last byte copied from packed key.
*/

const char *Field_blob::unpack_key(char *to, const char *from, uint max_length)
{
  /* get length of the blob key */
  uint32 length= *((uchar*) from++);
  if (max_length > 255)
    length+= (*((uchar*) from++)) << 8;

  /* put the length into the record buffer */
  put_length(to, length);

  /* put the address of the blob buffer or NULL */
  if (length)
    memcpy_fixed(to + packlength, &from, sizeof(from));
  else
    bzero(to + packlength, sizeof(from));

  /* point to first byte of next field in 'from' */
  return from + length;
}

/* Create a packed key that will be used for storage from a MySQL key */

char *Field_blob::pack_key_from_key_image(char *to, const char *from,
					  uint max_length)
{
  uint length=uint2korr(from);
  if (length > max_length)
    length=max_length;
  *to++= (char) (length & 255);
  if (max_length > 255)
    *to++= (char) (length >> 8);
  if (length)
    memcpy(to, from+2, length);
  return to+length;
}

uint Field_blob::packed_col_length(const char *data_ptr, uint length)
{
  if (length > 255)
    return uint2korr(data_ptr)+2;
  else
    return (uint) ((uchar) *data_ptr)+1;
}

uint Field_blob::max_packed_col_length(uint max_length)
{
  return (max_length > 255 ? 2 : 1)+max_length;
}

/****************************************************************************
** enum type.
** This is a string which only can have a selection of different values.
** If one uses this string in a number context one gets the type number.
****************************************************************************/

enum ha_base_keytype Field_enum::key_type() const
{
  switch (packlength) {
  default: return HA_KEYTYPE_BINARY;
  case 2: return HA_KEYTYPE_USHORT_INT;
  case 3: return HA_KEYTYPE_UINT24;
  case 4: return HA_KEYTYPE_ULONG_INT;
  case 8: return HA_KEYTYPE_ULONGLONG;
  }
}

void Field_enum::store_type(ulonglong value)
{
  switch (packlength) {
  case 1: ptr[0]= (uchar) value;  break;
  case 2:
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int2store(ptr,(unsigned short) value);
  }
  else
#endif
    shortstore(ptr,(unsigned short) value);
  break;
  case 3: int3store(ptr,(long) value); break;
  case 4:
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int4store(ptr,value);
  }
  else
#endif
    longstore(ptr,(long) value);
  break;
  case 8:
#ifdef WORDS_BIGENDIAN
  if (table->db_low_byte_first)
  {
    int8store(ptr,value);
  }
  else
#endif
    longlongstore(ptr,value); break;
  }
}


uint find_enum(TYPELIB *lib,const char *x, uint length)
{
  const char *end=x+length;
  while (end > x && isspace(end[-1]))
    end--;

  const char *i;
  const char *j;
  for (uint pos=0 ; (j=lib->type_names[pos]) ; pos++)
  {
    for (i=x ; i != end && toupper(*i) == toupper(*j) ; i++, j++) ;
    if (i == end && ! *j)
      return(pos+1);
  }
  return(0);
}


/*
** Note. Storing a empty string in a enum field gives a warning
** (if there isn't a empty value in the enum)
*/

void Field_enum::store(const char *from,uint length)
{
  uint tmp=find_enum(typelib,from,length);
  if (!tmp)
  {
    if (length < 6) // Can't be more than 99999 enums
    {
      /* This is for reading numbers with LOAD DATA INFILE */
      char buff[7], *end;
      const char *conv=from;
      if (from[length])
      {
	strmake(buff, from, length);
	conv=buff;
      }
      my_errno=0;
      tmp=(uint) strtoul(conv,&end,10);
      if (my_errno || end != conv+length || tmp > typelib->count)
      {
	tmp=0;
	current_thd->cuted_fields++;
      }
    }
    else
      current_thd->cuted_fields++;
  }
  store_type((ulonglong) tmp);
}


void Field_enum::store(double nr)
{
  Field_enum::store((longlong) nr);
}


void Field_enum::store(longlong nr)
{
  if ((uint) nr > typelib->count || nr == 0)
  {
    current_thd->cuted_fields++;
    nr=0;
  }
  store_type((ulonglong) (uint) nr);
}


double Field_enum::val_real(void)
{
  return (double) Field_enum::val_int();
}


longlong Field_enum::val_int(void)
{
  switch (packlength) {
  case 1:
    return (longlong) (uchar) ptr[0];
  case 2:
    {
      uint16 tmp;
#ifdef WORDS_BIGENDIAN
      if (table->db_low_byte_first)
	tmp=sint2korr(ptr);
      else
#endif
	shortget(tmp,ptr);
      return (longlong) tmp;
    }
  case 3:
    return (longlong) uint3korr(ptr);
  case 4:
    {
      uint32 tmp;
#ifdef WORDS_BIGENDIAN
      if (table->db_low_byte_first)
	tmp=uint4korr(ptr);
      else
#endif
	longget(tmp,ptr);
      return (longlong) tmp;
    }
  case 8:
    {
      longlong tmp;
#ifdef WORDS_BIGENDIAN
      if (table->db_low_byte_first)
	tmp=sint8korr(ptr);
      else
#endif
	longlongget(tmp,ptr);
      return tmp;
    }
  }
  return 0;					// impossible
}


String *Field_enum::val_str(String *val_buffer __attribute__((unused)),
			    String *val_ptr)
{
  uint tmp=(uint) Field_enum::val_int();
  if (!tmp || tmp > typelib->count)
    val_ptr->set("",0);
  else
    val_ptr->set((const char*) typelib->type_names[tmp-1],
		 (uint) strlen(typelib->type_names[tmp-1]));
  return val_ptr;
}

int Field_enum::cmp(const char *a_ptr, const char *b_ptr)
{
  char *old=ptr;
  ptr=(char*) a_ptr;
  ulonglong a=Field_enum::val_int();
  ptr=(char*) b_ptr;
  ulonglong b=Field_enum::val_int();
  ptr=old;
  return (a < b) ? -1 : (a > b) ? 1 : 0;
}

void Field_enum::sort_string(char *to,uint length __attribute__((unused)))
{
  ulonglong value=Field_enum::val_int();
  to+=packlength-1;
  for (uint i=0 ; i < packlength ; i++)
  {
    *to-- = (uchar) (value & 255);
    value>>=8;
  }
}


void Field_enum::sql_type(String &res) const
{
  res.length(0);
  res.append("enum(");

  bool flag=0;
  for (const char **pos=typelib->type_names; *pos ; pos++)
  {
    if (flag)
      res.append(',');
    res.append('\'');
    append_unescaped(&res,*pos);
    res.append('\'');
    flag=1;
  }
  res.append(')');
}


/****************************************************************************
** set type.
** This is a string which can have a collection of different values.
** Each string value is separated with a ','.
** For example "One,two,five"
** If one uses this string in a number context one gets the bits as a longlong
** number.
****************************************************************************/

ulonglong find_set(TYPELIB *lib,const char *x,uint length)
{
  const char *end=x+length;
  while (end > x && isspace(end[-1]))
    end--;

  ulonglong found=0;
  if (x != end)
  {
    const char *start=x;
    bool error=0;
    for (;;)
    {
      const char *pos=start;
      for (; pos != end && *pos != field_separator ; pos++) ;
      uint find=find_enum(lib,start,(uint) (pos-start));
      if (!find)
	error=1;
      else
	found|= ((longlong) 1 << (find-1));
      if (pos == end)
	break;
      start=pos+1;
    }
    if (error)
      current_thd->cuted_fields++;
  }
  return found;
}


void Field_set::store(const char *from,uint length)
{
  ulonglong tmp=find_set(typelib,from,length);
  if (!tmp && length && length < 22)
  {
    /* This is for reading numbers with LOAD DATA INFILE */
    char buff[22], *end;
    const char *conv=from;
    if (from[length])
    {
      strmake(buff, from, length);
      conv=buff;
    }
    my_errno=0;
    tmp=strtoull(conv,&end,10);
    if (my_errno || end != conv+length ||
	tmp > (ulonglong) (((longlong) 1 << typelib->count) - (longlong) 1))
      tmp=0;
    else
      current_thd->cuted_fields--;		// Remove warning from find_set
  }
  store_type(tmp);
}


void Field_set::store(longlong nr)
{
  if ((ulonglong) nr > (ulonglong) (((longlong) 1 << typelib->count) -
				    (longlong) 1))
  {
    nr&= (longlong) (((longlong) 1 << typelib->count) - (longlong) 1);
    current_thd->cuted_fields++;
  }
  store_type((ulonglong) nr);
}


String *Field_set::val_str(String *val_buffer,
			   String *val_ptr __attribute__((unused)))
{
  ulonglong tmp=(ulonglong) Field_enum::val_int();
  uint bitnr=0;

  val_buffer->length(0);
  while (tmp && bitnr < (uint) typelib->count)
  {
    if (tmp & 1)
    {
      if (val_buffer->length())
	val_buffer->append(field_separator);
      String str(typelib->type_names[bitnr],
		 (uint) strlen(typelib->type_names[bitnr]));
      val_buffer->append(str);
    }
    tmp>>=1;
    bitnr++;
  }
  return val_buffer;
}


void Field_set::sql_type(String &res) const
{
  res.length(0);
  res.append("set(");

  bool flag=0;
  for (const char **pos=typelib->type_names; *pos ; pos++)
  {
    if (flag)
      res.append(',');
    res.append('\'');
    append_unescaped(&res,*pos);
    res.append('\'');
    flag=1;
  }
  res.append(')');
}

/* returns 1 if the fields are equally defined */

bool Field::eq_def(Field *field)
{
  if (real_type() != field->real_type() || binary() != field->binary() ||
      pack_length() != field->pack_length())
    return 0;
  return 1;
}

bool Field_enum::eq_def(Field *field)
{
  if (!Field::eq_def(field))
    return 0;
  TYPELIB *from_lib=((Field_enum*) field)->typelib;

  if (typelib->count < from_lib->count)
    return 0;
  for (uint i=0 ; i < from_lib->count ; i++)
    if (my_strcasecmp(typelib->type_names[i],from_lib->type_names[i]))
      return 0;
  return 1;
}

bool Field_num::eq_def(Field *field)
{
  if (!Field::eq_def(field))
    return 0;
  Field_num *from_num= (Field_num*) field;

  if (unsigned_flag != from_num->unsigned_flag ||
      zerofill && !from_num->zerofill && !zero_pack() ||
      dec != from_num->dec)
    return 0;
  return 1;
}


/*****************************************************************************
** Handling of field and create_field
*****************************************************************************/

/*
  Make a field from the .frm file info
*/

uint32 calc_pack_length(enum_field_types type,uint32 length)
{
  switch (type) {
  case FIELD_TYPE_STRING:
  case FIELD_TYPE_DECIMAL: return (length);
  case FIELD_TYPE_VAR_STRING: return (length+2);
  case FIELD_TYPE_YEAR:
  case FIELD_TYPE_TINY	: return 1;
  case FIELD_TYPE_SHORT : return 2;
  case FIELD_TYPE_INT24:
  case FIELD_TYPE_NEWDATE:
  case FIELD_TYPE_TIME:   return 3;
  case FIELD_TYPE_TIMESTAMP:
  case FIELD_TYPE_DATE:
  case FIELD_TYPE_LONG	: return 4;
  case FIELD_TYPE_FLOAT : return sizeof(float);
  case FIELD_TYPE_DOUBLE: return sizeof(double);
  case FIELD_TYPE_DATETIME:
  case FIELD_TYPE_LONGLONG: return 8;	/* Don't crash if no longlong */
  case FIELD_TYPE_NULL	: return 0;
  case FIELD_TYPE_TINY_BLOB:	return 1+portable_sizeof_char_ptr;
  case FIELD_TYPE_BLOB:		return 2+portable_sizeof_char_ptr;
  case FIELD_TYPE_MEDIUM_BLOB:	return 3+portable_sizeof_char_ptr;
  case FIELD_TYPE_LONG_BLOB:	return 4+portable_sizeof_char_ptr;
  case FIELD_TYPE_SET:
  case FIELD_TYPE_ENUM: abort(); return 0;	// This shouldn't happen
  default: return 0;
  }
  return 0;					// This shouldn't happen
}


uint pack_length_to_packflag(uint type)
{
  switch (type) {
    case 1: return f_settype((uint) FIELD_TYPE_TINY);
    case 2: return f_settype((uint) FIELD_TYPE_SHORT);
    case 3: return f_settype((uint) FIELD_TYPE_INT24);
    case 4: return f_settype((uint) FIELD_TYPE_LONG);
    case 8: return f_settype((uint) FIELD_TYPE_LONGLONG);
  }
  return 0;					// This shouldn't happen
}


Field *make_field(char *ptr, uint32 field_length,
		  uchar *null_pos, uchar null_bit,
		  uint pack_flag,
		  enum_field_types field_type,
		  Field::utype unireg_check,
		  TYPELIB *interval,
		  const char *field_name,
		  struct st_table *table)
{
  if (!f_maybe_null(pack_flag))
  {
    null_pos=0;
    null_bit=0;
  }
  if (f_is_alpha(pack_flag))
  {
    if (!f_is_packed(pack_flag))
      return new Field_string(ptr,field_length,null_pos,null_bit,
			      unireg_check, field_name, table,
			      f_is_binary(pack_flag) != 0);

    uint pack_length=calc_pack_length((enum_field_types)
				      f_packtype(pack_flag),
				      field_length);

    if (f_is_blob(pack_flag))
      return new Field_blob(ptr,null_pos,null_bit,
			    unireg_check, field_name, table,
			    pack_length,f_is_binary(pack_flag) != 0);
    if (f_is_geom(pack_flag))
      return 0;

    if (interval)
    {
      if (f_is_enum(pack_flag))
	return new Field_enum(ptr,field_length,null_pos,null_bit,
				  unireg_check, field_name, table,
				  pack_length, interval);
      else
	return new Field_set(ptr,field_length,null_pos,null_bit,
			     unireg_check, field_name, table,
			     pack_length, interval);
    }
  }

  switch (field_type) {
  case FIELD_TYPE_DECIMAL:
    return new Field_decimal(ptr,field_length,null_pos,null_bit,
			     unireg_check, field_name, table,
			     f_decimals(pack_flag),
			     f_is_zerofill(pack_flag) != 0,
			     f_is_dec(pack_flag) == 0);
  case FIELD_TYPE_FLOAT:
    return new Field_float(ptr,field_length,null_pos,null_bit,
			   unireg_check, field_name, table,
			   f_decimals(pack_flag),
			   f_is_zerofill(pack_flag) != 0,
			   f_is_dec(pack_flag)== 0);
  case FIELD_TYPE_DOUBLE:
    return new Field_double(ptr,field_length,null_pos,null_bit,
			    unireg_check, field_name, table,
			    f_decimals(pack_flag),
			    f_is_zerofill(pack_flag) != 0,
			    f_is_dec(pack_flag)== 0);
  case FIELD_TYPE_TINY:
    return new Field_tiny(ptr,field_length,null_pos,null_bit,
			  unireg_check, field_name, table,
			  f_is_zerofill(pack_flag) != 0,
			  f_is_dec(pack_flag) == 0);
  case FIELD_TYPE_SHORT:
    return new Field_short(ptr,field_length,null_pos,null_bit,
			   unireg_check, field_name, table,
			   f_is_zerofill(pack_flag) != 0,
			   f_is_dec(pack_flag) == 0);
  case FIELD_TYPE_INT24:
    return new Field_medium(ptr,field_length,null_pos,null_bit,
			    unireg_check, field_name, table,
			    f_is_zerofill(pack_flag) != 0,
			    f_is_dec(pack_flag) == 0);
  case FIELD_TYPE_LONG:
    return new Field_long(ptr,field_length,null_pos,null_bit,
			   unireg_check, field_name, table,
			   f_is_zerofill(pack_flag) != 0,
			   f_is_dec(pack_flag) == 0);
  case FIELD_TYPE_LONGLONG:
    return new Field_longlong(ptr,field_length,null_pos,null_bit,
			      unireg_check, field_name, table,
			      f_is_zerofill(pack_flag) != 0,
			      f_is_dec(pack_flag) == 0);
  case FIELD_TYPE_TIMESTAMP:
    return new Field_timestamp(ptr,field_length,
			       unireg_check, field_name, table);
  case FIELD_TYPE_YEAR:
    return new Field_year(ptr,field_length,null_pos,null_bit,
			  unireg_check, field_name, table);
  case FIELD_TYPE_DATE:
    return new Field_date(ptr,null_pos,null_bit,
			  unireg_check, field_name, table);
  case FIELD_TYPE_NEWDATE:
    return new Field_newdate(ptr,null_pos,null_bit,
			     unireg_check, field_name, table);
  case FIELD_TYPE_TIME:
    return new Field_time(ptr,null_pos,null_bit,
			  unireg_check, field_name, table);
  case FIELD_TYPE_DATETIME:
    return new Field_datetime(ptr,null_pos,null_bit,
			      unireg_check, field_name, table);
  case FIELD_TYPE_NULL:
    return new Field_null(ptr,field_length,unireg_check,field_name,table);
  default:					// Impossible (Wrong version)
    break;
  }
  return 0;					// Impossible
}


/* Create a field suitable for create of table */

create_field::create_field(Field *old_field,Field *orig_field)
{
  field=      old_field;
  field_name=change=old_field->field_name;
  length=     old_field->field_length;
  flags=      old_field->flags;
  unireg_check=old_field->unireg_check;
  pack_length=old_field->pack_length();
  sql_type=   old_field->real_type();

  /* Fix if the original table had 4 byte pointer blobs */
  if (flags & BLOB_FLAG)
    pack_length= (pack_length- old_field->table->blob_ptr_size +
		  portable_sizeof_char_ptr);
  decimals= old_field->decimals();
  if (sql_type == FIELD_TYPE_STRING)
  {
    sql_type=old_field->type();
    decimals=0;
  }
  if (flags & (ENUM_FLAG | SET_FLAG))
    interval= ((Field_enum*) old_field)->typelib;
  else
    interval=0;
  def=0;
  if (!old_field->is_real_null() && ! (flags & BLOB_FLAG) &&
      old_field->ptr && orig_field)
  {
    char buff[MAX_FIELD_WIDTH],*pos;
    String tmp(buff,sizeof(buff));

    /* Get the value from record[2] (the default value row) */
    my_ptrdiff_t diff= (my_ptrdiff_t) (orig_field->table->rec_buff_length*2);
    orig_field->move_field(diff);		// Points now at record[2]
    bool is_null=orig_field->is_real_null();
    orig_field->val_str(&tmp,&tmp);
    orig_field->move_field(-diff);		// Back to record[0]
    if (!is_null)
    {
      pos= (char*) sql_memdup(tmp.ptr(),tmp.length()+1);
      pos[tmp.length()]=0;
      def=new Item_string(pos,tmp.length());
    }
  }
}
