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[/] [openrisc/] [trunk/] [gnu-old/] [binutils-2.18.50/] [libiberty/] [memchr.c] - Rev 842

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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
returned.
 
@end deftypefn
 
*/
 
#include <ansidecl.h>
#include <stddef.h>
 
PTR
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;
    src++;
  }
  return NULL;
}
 

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