~drizzle-trunk/drizzle/development

/* Copyright (C) 2000 MySQL 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; version 2 of the License.

   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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */

#include <config.h>

#include <drizzled/internal/m_string.h>

namespace drizzled

{

namespace internal

{

/*

  Converts integer to its string representation in decimal notation.

  SYNOPSIS

    int10_to_str()

      val     - value to convert

      dst     - points to buffer where string representation should be stored

      radix   - flag that shows whenever val should be taken as signed or not

  DESCRIPTION

    This is version of int2str() function which is optimized for normal case

    of radix 10/-10. It takes only sign of radix parameter into account and

    not its absolute value.

  RETURN VALUE

    Pointer to ending NUL character.

*/

char *int10_to_str(int32_t val,char *dst,int radix)

{

  char buffer[65];

  int32_t new_val;

  uint32_t uval = (uint32_t) val;

  if (radix < 0)				/* -10 */

  {

    if (val < 0)

    {

      *dst++ = '-';

      /* Avoid integer overflow in (-val) for INT32_MIN (BUG#31799). */

      uval = (uint32_t)0 - uval;

    }

  }

  char* p = &buffer[sizeof(buffer)-1];

  *p = '\0';

  new_val= (int32_t) (uval / 10);

  *--p = '0'+ (char) (uval - (uint32_t) new_val * 10);

  val = new_val;

  while (val != 0)

  {

    new_val=val/10;

    *--p = '0' + (char) (val-new_val*10);

    val= new_val;

  }

  while ((*dst++ = *p++) != 0) ;

  return dst-1;

}

} /* namespace internal */

} /* namespace drizzled */