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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [libiberty/] [memcmp.c] - Blame information for rev 24

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1 24 jeremybenn
/* memcmp -- compare two memory regions.
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   This function is in the public domain.  */
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/*
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@deftypefn Supplemental int memcmp (const void *@var{x}, const void *@var{y}, size_t @var{count})
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Compares the first @var{count} bytes of two areas of memory.  Returns
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zero if they are the same, a value less than zero if @var{x} is
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lexically less than @var{y}, or a value greater than zero if @var{x}
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is lexically greater than @var{y}.  Note that lexical order is determined
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as if comparing unsigned char arrays.
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@end deftypefn
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*/
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#include <ansidecl.h>
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#include <stddef.h>
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int
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memcmp (const PTR str1, const PTR str2, size_t count)
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{
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  register const unsigned char *s1 = (const unsigned char*)str1;
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  register const unsigned char *s2 = (const unsigned char*)str2;
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  while (count-- > 0)
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    {
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      if (*s1++ != *s2++)
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          return s1[-1] < s2[-1] ? -1 : 1;
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    }
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  return 0;
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}
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