Ruby
3.2.2p53 (2023-03-30 revision e51014f9c05aa65cbf203442d37fef7c12390015)
missing
memcmp.c
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/* 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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int
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memcmp(
const
void
*s1,
const
void
*s2,
size_t
len)
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{
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register
unsigned
char
*a = (
unsigned
char
*)s1;
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register
unsigned
char
*b = (
unsigned
char
*)s2;
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register
int
tmp;
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for
(; len; --len) {
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tmp = *a++ - *b++;
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if
(tmp)
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return
tmp;
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}
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return
0;
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}
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