Add --input-type and --output-type to elfedit
[binutils.git] / libiberty / memcmp.c
blob39edfca98a6dad4e5fe3a0ea83598442510c6e9b
1 /* memcmp -- compare two memory regions.
2 This function is in the public domain. */
4 /*
6 @deftypefn Supplemental int memcmp (const void *@var{x}, const void *@var{y}, size_t @var{count})
8 Compares the first @var{count} bytes of two areas of memory. Returns
9 zero if they are the same, a value less than zero if @var{x} is
10 lexically less than @var{y}, or a value greater than zero if @var{x}
11 is lexically greater than @var{y}. Note that lexical order is determined
12 as if comparing unsigned char arrays.
14 @end deftypefn
18 #include <ansidecl.h>
19 #include <stddef.h>
21 int
22 memcmp (const PTR str1, const PTR str2, size_t count)
24 register const unsigned char *s1 = (const unsigned char*)str1;
25 register const unsigned char *s2 = (const unsigned char*)str2;
27 while (count-- > 0)
29 if (*s1++ != *s2++)
30 return s1[-1] < s2[-1] ? -1 : 1;
32 return 0;