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author | Jason Merrill <jason@gcc.gnu.org> | 1997-08-21 18:57:35 -0400 |
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committer | Jason Merrill <jason@gcc.gnu.org> | 1997-08-21 18:57:35 -0400 |
commit | 6599da043e22e96ac830fb50a61c1b6d95d1b142 (patch) | |
tree | a3b19970338bdae580faff126a716e1d5520400c /libiberty/memcmp.c | |
parent | 8975416cfb6269ad94b6330d42960cca8b0925b7 (diff) | |
download | gcc-6599da043e22e96ac830fb50a61c1b6d95d1b142.zip gcc-6599da043e22e96ac830fb50a61c1b6d95d1b142.tar.gz gcc-6599da043e22e96ac830fb50a61c1b6d95d1b142.tar.bz2 |
Initial revision
From-SVN: r14877
Diffstat (limited to 'libiberty/memcmp.c')
-rw-r--r-- | libiberty/memcmp.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/libiberty/memcmp.c b/libiberty/memcmp.c new file mode 100644 index 0000000..127ae0c --- /dev/null +++ b/libiberty/memcmp.c @@ -0,0 +1,38 @@ +/* memcmp -- compare two memory regions. + This function is in the public domain. */ + +/* +NAME + memcmp -- compare two memory regions + +SYNOPSIS + int memcmp (const void *from, const void *to, size_t count) + +DESCRIPTION + Compare two memory regions and return less than, + equal to, or greater than zero, according to lexicographical + ordering of the compared regions. +*/ + +#include <ansidecl.h> +#ifdef __STDC__ +#include <stddef.h> +#else +#define size_t unsigned long +#endif + +int +DEFUN(memcmp, (str1, str2, count), + const PTR str1 AND const PTR str2 AND size_t count) +{ + register unsigned char *s1 = (unsigned char*)str1; + register unsigned char *s2 = (unsigned char*)str2; + + while (count-- > 0) + { + if (*s1++ != *s2++) + return s1[-1] < s2[-1] ? -1 : 1; + } + return 0; +} + |