2006-06-07 Paolo Bonzini <bonzini@gnu.org>

[pf3gnuchains/gcc-fork.git] / libdecnumber / decLibrary.c

diff --git a/libdecnumber/decLibrary.c b/libdecnumber/decLibrary.c
index b7cbd10..19468ac 100644 (file)
--- a/libdecnumber/decLibrary.c
+++ b/libdecnumber/decLibrary.c
@@ -1,23 +1,24 @@
 /* Temporary library support for decimal floating point.
-   Copyright (C) 2005 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2006 Free Software Foundation, Inc.
 
-This file is part of GCC.
+   This file is part of GCC.
 
-GCC 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.
+   GCC 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.
 
-GCC 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 General Public License
-for more details.
+   GCC 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 General Public
+   License for more details.
 
-You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING.  If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA.  */
+   You should have received a copy of the GNU General Public License
+   along with GCC; see the file COPYING.  If not, write to the Free
+   Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301, USA.  */
 
+#include "config.h"
 #include "decContext.h"
 #include "decimal128.h"
 #include "decimal64.h"
@@ -79,3 +80,22 @@ __dfp_raise (int exception __attribute__ ((unused)))
 {
   raise (SIGFPE);
 }
+
+uint32_t
+__dec_byte_swap (uint32_t in)
+{
+  uint32_t out = 0;
+  unsigned char *p = (unsigned char *) &out;
+  union {
+    uint32_t i;
+    unsigned char b[4];
+  } u;
+
+  u.i = in;
+  p[0] = u.b[3];
+  p[1] = u.b[2];
+  p[2] = u.b[1];
+  p[3] = u.b[0];
+
+  return out;
+}