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- /* $Id$ */
- char *
- memcpy(s1, s2, n)
- register char *s1, *s2;
- register int n;
- {
- /* Copy a block of data. */
- char *ret = s1;
- if (s2 <= s1 && s2 + (n-1) >= s1) {
- s1 += n; s2 += n;
- while (n-- > 0) *--s1 = *--s2;
- }
- else while (n-- > 0) *s1++ = *s2++;
- return ret;
- }
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