src/base/mem/move.c


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#include "internal.h"

int
mem·move(void *dst, void *src, uintptr len)
{
    char *d, *s;
    if((long)len < 0)
        return 1;

    d=dst, s=src;
    if((s < d) && (s+len > d))
        goto aliased;
    while(len-- > 0)
        *d++ = *s++;
    return 0;

aliased:
    d+=len, s+=len;
    while(len-- > 0)
        *--d = *--s;
    return 0;
}