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/* 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] ;
}
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