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ruby--ruby/missing/memmove.c
matz 3db12e8b23 Initial revision
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
1998-01-16 12:13:05 +00:00

24 lines
363 B
C

/*
* memmove --- move memories.
*
* We supply this routine for those systems that aren't standard yet.
*/
char *
memmove (dst, src, n)
char *dst, *src;
int n;
{
char *ret = dst;
if (src < dst) {
src += n;
dst += n;
while (n--)
*--dst = *--src;
}
else if (dst < src)
while (n--)
*dst++ = *src++;
return ret;
}