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/*
* SunOS doesn't provide a memmove() function, and you cannot simply put
* -Dmemmove=memcpy in the Makefiles because memcpy() doesn't support
* overlapping copies. Oddly enough, bcopy() does! So we can write memmove
* as a wrapper around bcopy.
*
* If you don't have bcopy(), or if it doesn't support overlapping copies,
* you can still define NO_BCOPY and use the generic version below.
* It's very slow of course, as it copies only one byte at a time.
* Complain to your vendor, or get a real Unix.
*/
#ifdef NO_BCOPY
char *memmove (char *dest, char *src, unsigned long count)
{
char *save_dest = dest;
if (dest < src) {
while (count--)
*dest++ = *src++;
} else {
src += count;
dest += count;
while (count--)
*--dest = *--src;
}
return save_dest;
}
#else
char *memmove (char *dest, char *src, unsigned long count)
{
bcopy(src, dest, count);
return dest;
}
#endif
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