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1.9.3p392(2013-02-22revision39386)
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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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if
(tmp = *a++ - *b++)
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return
tmp;
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}
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return
0;
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}
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