23 lines
372 B
C
23 lines
372 B
C
/* public domain rewrite of memcmp(3) */
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#include "ruby/missing.h"
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#include <stddef.h>
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void *
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memmove(void *d, const void *s, size_t n)
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{
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char *dst = (char *)d;
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const char *src = (const char *)s;
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if (src < dst) {
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src += n;
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dst += n;
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for (; n; --n)
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*--dst = *--src;
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}
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else if (dst < src)
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for (; n; --n)
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*dst++ = *src++;
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return d;
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}
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