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/*
* Copyright (C) 1991, 1992 Linus Torvalds
*/
#include <xen/string.h>
/**
* memchr_inv - Find an unmatching character in an area of memory.
* @s: The memory area
* @c: The byte that is expected
* @n: The size of the area.
*
* returns the address of the first occurrence of a character other than @c,
* or %NULL if the whole buffer contains just @c.
*/
void *memchr_inv(const void *s, int c, size_t n)
{
const unsigned char *p = s;
while (n--)
if ((unsigned char)c != *p++)
return (void *)(p - 1);
return NULL;
}
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*/
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