Add a GPL copyright notice.

[gnulib.git] / lib / md5.c

diff --git a/lib/md5.c b/lib/md5.c
index 2fc652c..999e25e 100644 (file)
--- a/lib/md5.c
+++ b/lib/md5.c
@@ -1,6 +1,6 @@
 /* md5.c - Functions to compute MD5 message digest of files or memory blocks
    according to the definition of MD5 in RFC 1321 from April 1992.
-   Copyright (C) 1995, 1996, 2001, 2003 Free Software Foundation, Inc.
+   Copyright (C) 1995, 1996, 2001, 2003, 2004 Free Software Foundation, Inc.
    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.
 
@@ -26,12 +26,12 @@
 
 #include "md5.h"
 
-#include <sys/types.h>
-
-#include <stdlib.h>
+#include <stddef.h>
 #include <string.h>
 
-#include "unlocked-io.h"
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+#endif
 
 #ifdef _LIBC
 # include <endian.h>
@@ -246,13 +246,8 @@ md5_process_bytes (const void *buffer, size_t len, struct md5_ctx *ctx)
   if (len >= 64)
     {
 #if !_STRING_ARCH_unaligned
-/* To check alignment gcc has an appropriate operator.  Other
-   compilers don't.  */
-# if __GNUC__ >= 2
-#  define UNALIGNED_P(p) (((md5_uintptr) p) % __alignof__ (md5_uint32) != 0)
-# else
-#  define UNALIGNED_P(p) (((md5_uintptr) p) % sizeof (md5_uint32) != 0)
-# endif
+# define alignof(type) offsetof (struct { char c; type x; }, x)
+# define UNALIGNED_P(p) (((size_t) p) % alignof (md5_uint32) != 0)
       if (UNALIGNED_P (buffer))
        while (len > 64)
          {