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Jan Beulich
47cb18e069
Allow the function to be individually linkable, discardable, and overridable. Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Julien Grall <jgrall@amazon.com>
36 lines
668 B
C
36 lines
668 B
C
/*
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* Copyright (C) 1991, 1992 Linus Torvalds
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*/
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#include <xen/string.h>
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/**
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* memchr_inv - Find an unmatching character in an area of memory.
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* @s: The memory area
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* @c: The byte that is expected
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* @n: The size of the area.
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*
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* returns the address of the first occurrence of a character other than @c,
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* or %NULL if the whole buffer contains just @c.
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*/
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void *memchr_inv(const void *s, int c, size_t n)
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{
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const unsigned char *p = s;
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while (n--)
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if ((unsigned char)c != *p++)
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return (void *)(p - 1);
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return NULL;
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}
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/*
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* Local variables:
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* mode: C
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* c-file-style: "BSD"
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*/
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