view libiberty/memchr.c @ 108:7ad14f446135

add CbC-example/rectypeTest/
author Nobuyasu Oshiro <>
date Thu, 14 Jun 2012 20:30:24 +0900
parents f6334be47118
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@deftypefn Supplemental void* memchr (const void *@var{s}, int @var{c}, @
  size_t @var{n})

This function searches memory starting at @code{*@var{s}} for the
character @var{c}.  The search only ends with the first occurrence of
@var{c}, or after @var{length} characters; in particular, a null
character does not terminate the search.  If the character @var{c} is
found within @var{length} characters of @code{*@var{s}}, a pointer
to the character is returned.  If @var{c} is not found, then @code{NULL} is

@end deftypefn


#include <ansidecl.h>
#include <stddef.h>

memchr (register const PTR src_void, int c, size_t length)
  const unsigned char *src = (const unsigned char *)src_void;
  while (length-- > 0)
    if (*src == c)
     return (PTR)src;
  return NULL;