[!USE_IN_LIBIO]: Omit this case; assume USE_IN_LIBIO is 1.

[gnulib.git] / lib / md5.c

diff --git a/lib/md5.c b/lib/md5.c
index d7b0f0e..2f24952 100644 (file)
--- a/lib/md5.c
+++ b/lib/md5.c
@@ -1,22 +1,22 @@
 /* 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 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
+   Copyright (C) 1995, 1996, 2001 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.
 
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
+   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
+   later version.
 
-   The GNU C Library is distributed in the hope that it will be useful,
+   This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Library General Public License for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
 
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   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.  */
 
 /* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.  */
 
@@ -36,6 +36,7 @@
 #endif
 
 #include "md5.h"
+#include "unlocked-io.h"
 
 #ifdef _LIBC
 # include <endian.h>
@@ -304,19 +305,16 @@ md5_process_block (buffer, len, ctx)
         {                                                              \
          a += FF (b, c, d) + (*cwp++ = SWAP (*words)) + T;             \
          ++words;                                                      \
-         CYCLIC (a, s);                                                \
+         a = rol (a, s);                                               \
          a += b;                                                       \
         }                                                              \
       while (0)
 
-      /* It is unfortunate that C does not provide an operator for
-        cyclic rotation.  Hope the C compiler is smart enough.  */
-#define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s)))
-
       /* Before we start, one word to the strange constants.
         They are defined in RFC 1321 as
 
-        T[i] = (int) (4294967296.0 * fabs (sin (i))), i=1..64
+        T[i] = (int) (4294967296.0 * fabs (sin (i))), i=1..64, or
+        perl -e 'foreach(1..64){printf "0x%08x\n", int (4294967296 * abs (sin $_))}'
        */
 
       /* Round 1.  */
@@ -345,7 +343,7 @@ md5_process_block (buffer, len, ctx)
       do                                                               \
        {                                                               \
          a += f (b, c, d) + correct_words[k] + T;                      \
-         CYCLIC (a, s);                                                \
+         a = rol (a, s);                                               \
          a += b;                                                       \
        }                                                               \
       while (0)