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)
+@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
-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__
+#ifdef ANSI_PROTOTYPES
#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)
+memcmp (str1, str2, count)
+ const PTR str1;
+ const PTR str2;
+ size_t count;
{
- register unsigned char *s1 = (unsigned char*)str1;
- register unsigned char *s2 = (unsigned char*)str2;
+ register const unsigned char *s1 = (const unsigned char*)str1;
+ register const unsigned char *s2 = (const unsigned char*)str2;
while (count-- > 0)
{