From: Bruno Haible <bruno@clisp.org>
Date: Fri, 26 Aug 2005 11:02:29 +0000 (+0000)
Subject: gnulib module 'byteswap'.
X-Git-Tag: v0.15~421
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1d42f87222cdbe5d79671df19e59348d0c380819;p=thirdparty%2Fgettext.git

gnulib module 'byteswap'.
---

diff --git a/gettext-tools/lib/byteswap_.h b/gettext-tools/lib/byteswap_.h
new file mode 100644
index 000000000..da3c6a377
--- /dev/null
+++ b/gettext-tools/lib/byteswap_.h
@@ -0,0 +1,44 @@
+/* byteswap.h - Byte swapping
+   Copyright (C) 2005 Free Software Foundation, Inc.
+   Written by Oskar Liljeblad <oskar@osk.mine.nu>, 2005.
+
+   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.
+
+   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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#ifndef _BYTESWAP_H
+
+/* Given an unsigned 16-bit argument X, return the value corresponding to
+   X with reversed byte order.  */
+#define bswap_16(x) ((((x) & 0x00FF) << 8) | \
+		     (((x) & 0xFF00) >> 8))
+
+/* Given an unsigned 32-bit argument X, return the value corresponding to
+   X with reversed byte order.  */
+#define bswap_32(x) ((((x) & 0x000000FF) << 24) | \
+		     (((x) & 0x0000FF00) << 8) | \
+		     (((x) & 0x00FF0000) << 8) | \
+		     (((x) & 0xFF000000) >> 24))
+
+/* Given an unsigned 64-bit argument X, return the value corresponding to
+   X with reversed byte order.  */
+#define bswap_64(x) ((((x) & 0x00000000000000FFULL) << 56) | \
+		     (((x) & 0x000000000000FF00ULL) << 40) | \
+		     (((x) & 0x0000000000FF0000ULL) << 24) | \
+		     (((x) & 0x00000000FF000000ULL) << 8) | \
+		     (((x) & 0x000000FF00000000ULL) >> 8) | \
+		     (((x) & 0x0000FF0000000000ULL) >> 24) | \
+		     (((x) & 0x00FF000000000000ULL) >> 40) | \
+		     (((x) & 0xFF00000000000000ULL) >> 56))
+
+#endif
diff --git a/gettext-tools/m4/byteswap.m4 b/gettext-tools/m4/byteswap.m4
new file mode 100644
index 000000000..e71c80268
--- /dev/null
+++ b/gettext-tools/m4/byteswap.m4
@@ -0,0 +1,18 @@
+# byteswap.m4 serial 1
+dnl Copyright (C) 2005 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Oskar Liljeblad.
+
+AC_DEFUN([gl_BYTESWAP],
+[
+  dnl Prerequisites of lib/byteswap_.h.
+  AC_CHECK_HEADERS([byteswap.h], [
+    BYTESWAP_H=''
+  ], [
+    BYTESWAP_H='byteswap.h'
+  ])
+  AC_SUBST(BYTESWAP_H)
+])