~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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

#define IFACTOR 4

  void

dcopy(char *chardest, char *charsrc, int size)

{

  register int *src, *dest, intcount ;

  int startcharcpy, intoffset, numints2cpy, i ;

  numints2cpy = size >> 2 ;

  startcharcpy = numints2cpy << 2 ;

  intcount = numints2cpy & ~(IFACTOR-1) ;

  intoffset = numints2cpy - intcount ;

  src = (int *)(((int) charsrc) + intcount*sizeof(int*)) ;

  dest = (int *)(((int) chardest) + intcount*sizeof(int*)) ;

  /* copy the ints */

  switch(intoffset)

    do

    {

    case 0: dest[3] = src[3] ;

    case 3: dest[2] = src[2] ;

    case 2: dest[1] = src[1] ;

    case 1: dest[0] = src[0] ;

      intcount -= IFACTOR ;

      dest -= IFACTOR ;

      src -= IFACTOR ;

    } while (intcount >= 0) ;

  /* copy the chars left over by the int copy at the end */

  for(i=startcharcpy ; i<size ; i++)

    chardest[i] = charsrc[i] ;

}