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v0.5.1
https://github.com/python/cpython
09 December 2020, 11:06:31 UTC
Revision 6c52d76db8b1cb836c136bd6a1044e85bfe8241e authored by Georg Brandl on 05 March 2011, 13:55:46 UTC, committed by Georg Brandl on 05 March 2011, 13:55:46 UTC 
Close 2.3 branch.
1 parent ccffc9e
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Tip revision: 6c52d76db8b1cb836c136bd6a1044e85bfe8241e authored by Georg Brandl on 05 March 2011, 13:55:46 UTC
Close 2.3 branch.
Tip revision: 6c52d76
memmove.c 

/* A perhaps slow but I hope correct implementation of memmove */

extern char *memcpy(char *, char *, int);

char *
memmove(char *dst, char *src, int n)
{
	char *realdst = dst;
	if (n <= 0)
		return dst;
	if (src >= dst+n || dst >= src+n)
		return memcpy(dst, src, n);
	if (src > dst) {
		while (--n >= 0)
			*dst++ = *src++;
	}
	else if (src < dst) {
		src += n;
		dst += n;
		while (--n >= 0)
			*--dst = *--src;
	}
	return realdst;
}
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