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Optimize xmemrchr()

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Arun Prakash Jana 2017-12-25 01:44:48 +05:30
parent 436d2143fd
commit f7399b05f9
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1 changed files with 8 additions and 6 deletions
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nnn.c
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@ -433,17 +433,19 @@ xstrcmp(const char *s1, const char *s2)
static void * static void *
xmemrchr(uchar *s, uchar ch, size_t n) xmemrchr(uchar *s, uchar ch, size_t n)
{ {
static uchar *ptr;
if (!s || !n) if (!s || !n)
return NULL; return NULL;
s = s + n - 1; ptr = s + n;
while (n) { do {
if (*s == ch) --ptr;
return s;
--n, --s; if (*ptr == ch)
} return ptr;
} while (s != ptr);
return NULL; return NULL;
} }