Ruby
3.2.3p157 (2024-01-18 revision 52bb2ac0a6971d0391efa2275f7a66bff319087c)
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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