Imported from /home/lorry/working-area/delta_binutils-tarball/binutils-2.25.tar.bz2.HEADbinutils-2.25master

1 files changed, 35 insertions, 0 deletions

diff --git a/libiberty/memcmp.c b/libiberty/memcmp.c
new file mode 100644
index 0000000..37db60f
--- /dev/null
+++ b/libiberty/memcmp.c
@@ -0,0 +1,35 @@
+/* memcmp -- compare two memory regions.
+   This function is in the public domain.  */
+
+/*
+
+@deftypefn Supplemental int memcmp (const void *@var{x}, const void *@var{y}, @
+  size_t @var{count})
+
+Compares the first @var{count} bytes of two areas of memory.  Returns
+zero if they are the same, a value less than zero if @var{x} is
+lexically less than @var{y}, or a value greater than zero if @var{x}
+is lexically greater than @var{y}.  Note that lexical order is determined
+as if comparing unsigned char arrays.
+
+@end deftypefn
+
+*/
+
+#include <ansidecl.h>
+#include <stddef.h>
+
+int
+memcmp (const PTR str1, const PTR str2, size_t count)
+{
+  register const unsigned char *s1 = (const unsigned char*)str1;
+  register const unsigned char *s2 = (const unsigned char*)str2;
+
+  while (count-- > 0)
+    {
+      if (*s1++ != *s2++)
+	  return s1[-1] < s2[-1] ? -1 : 1;
+    }
+  return 0;
+}
+