-mautoupdate

[gnulib.git] / lib / memcmp.c

diff --git a/lib/memcmp.c b/lib/memcmp.c
index f548d04..0181071 100644 (file)
--- a/lib/memcmp.c
+++ b/lib/memcmp.c
@@ -1,12 +1,14 @@
-/* Copyright (C) 1991, 1993, 1995, 1997, 1998, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1993, 1995, 1997, 1998, 2003, 2006, 2009 Free Software
+   Foundation, Inc.
+
    Contributed by Torbjorn Granlund (tege@sics.se).
 
    NOTE: The canonical source of this file is maintained with the GNU C Library.
    Bugs can be reported to bug-glibc@prep.ai.mit.edu.
 
-   This program is free software; you can redistribute it and/or modify it
+   This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
-   Free Software Foundation; either version 2, or (at your option) any
+   Free Software Foundation; either version 3 of the License, or any
    later version.
 
    This program is distributed in the hope that it will be useful,
@@ -15,40 +17,26 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-   USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#ifdef HAVE_CONFIG_H
-# include "config.h"
+#ifndef _LIBC
+# include <config.h>
 #endif
 
-#undef __ptr_t
-#if defined __cplusplus || (defined __STDC__ && __STDC__)
-# define __ptr_t       void *
-#else /* Not C++ or ANSI C.  */
-# undef        const
-# define const
-# define __ptr_t       char *
-#endif /* C++ or ANSI C.  */
-
-#ifndef __P
-# if defined __GNUC__ || (defined __STDC__ && __STDC__)
-#  define __P(args) args
-# else
-#  define __P(args) ()
-# endif  /* GCC.  */
-#endif  /* Not __P.  */
+#include <string.h>
 
-#if defined HAVE_STRING_H || defined _LIBC
-# include <string.h>
-#endif
+#include <stdint.h>
 
 #undef memcmp
 
 #ifdef _LIBC
 
 # include <memcopy.h>
+# include <endian.h>
+
+# if __BYTE_ORDER == __BIG_ENDIAN
+#  define WORDS_BIGENDIAN
+# endif
 
 #else  /* Not in the GNU C library.  */
 
@@ -98,22 +86,20 @@ typedef unsigned char byte;
    A and B are known to be different.
    This is needed only on little-endian machines.  */
 
-static int memcmp_bytes __P((op_t, op_t));
-
 # ifdef  __GNUC__
 __inline
 # endif
 static int
-memcmp_bytes (long unsigned int a, long unsigned int b)
+memcmp_bytes (op_t a, op_t b)
 {
-  long int srcp1 = (long int) &a;
-  long int srcp2 = (long int) &b;
+  const byte *srcp1 = (const byte *) &a;
+  const byte *srcp2 = (const byte *) &b;
   op_t a0, b0;
 
   do
     {
-      a0 = ((byte *) srcp1)[0];
-      b0 = ((byte *) srcp2)[0];
+      a0 = srcp1[0];
+      b0 = srcp2[0];
       srcp1 += 1;
       srcp2 += 1;
     }
@@ -122,8 +108,6 @@ memcmp_bytes (long unsigned int a, long unsigned int b)
 }
 #endif
 
-static int memcmp_common_alignment __P((long, long, size_t));
-
 /* memcmp_common_alignment -- Compare blocks at SRCP1 and SRCP2 with LEN `op_t'
    objects (not LEN bytes!).  Both SRCP1 and SRCP2 should be aligned for
    memory operations on `op_t's.  */
@@ -131,7 +115,7 @@ static int memcmp_common_alignment __P((long, long, size_t));
 __inline
 #endif
 static int
-memcmp_common_alignment (long int srcp1, long int srcp2, size_t len)
+memcmp_common_alignment (uintptr_t srcp1, uintptr_t srcp2, size_t len)
 {
   op_t a0, a1;
   op_t b0, b1;
@@ -209,8 +193,6 @@ memcmp_common_alignment (long int srcp1, long int srcp2, size_t len)
   return 0;
 }
 
-static int memcmp_not_common_alignment __P((long, long, size_t));
-
 /* memcmp_not_common_alignment -- Compare blocks at SRCP1 and SRCP2 with LEN
    `op_t' objects (not LEN bytes!).  SRCP2 should be aligned for memory
    operations on `op_t', but SRCP1 *should be unaligned*.  */
@@ -218,7 +200,7 @@ static int memcmp_not_common_alignment __P((long, long, size_t));
 __inline
 #endif
 static int
-memcmp_not_common_alignment (long int srcp1, long int srcp2, size_t len)
+memcmp_not_common_alignment (uintptr_t srcp1, uintptr_t srcp2, size_t len)
 {
   op_t a0, a1, a2, a3;
   op_t b0, b1, b2, b3;
@@ -322,8 +304,8 @@ rpl_memcmp (const void *s1, const void *s2, size_t len)
 {
   op_t a0;
   op_t b0;
-  long int srcp1 = (long int) s1;
-  long int srcp2 = (long int) s2;
+  uintptr_t srcp1 = (uintptr_t) s1;
+  uintptr_t srcp2 = (uintptr_t) s2;
   op_t res;
 
   if (len >= OP_T_THRES)