117 lines
3.0 KiB
C
117 lines
3.0 KiB
C
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// Copyright (c) 1997
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// Utrecht University (The Netherlands),
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// ETH Zurich (Switzerland),
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// INRIA Sophia-Antipolis (France),
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// Max-Planck-Institute Saarbruecken (Germany),
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// and Tel-Aviv University (Israel). All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 3 of the License,
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// or (at your option) any later version.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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// SPDX-License-Identifier: LGPL-3.0+
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//
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//
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// Author(s) : Lutz Kettner <kettner@mpi-sb.mpg.de>
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#ifndef CGAL_IO_BINARY_FILE_IO_H
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#define CGAL_IO_BINARY_FILE_IO_H
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#include <CGAL/config.h>
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#include <iostream>
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#include <boost/cstdint.hpp>
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namespace CGAL {
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inline void
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I_Binary_write_integer32(std::ostream& out, boost::int32_t i) {
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out.write( (char*)(&i), 4);
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}
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inline void
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I_Binary_write_float32(std::ostream& out, float f) {
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out.write( (char*)(&f), 4);
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}
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inline void
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I_Binary_read_integer32(std::istream& in, boost::int32_t& i) {
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in.read( (char*)(&i), 4);
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}
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inline void
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I_Binary_read_float32(std::istream& in, float& f) {
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in.read( (char*)(&f), 4);
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}
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inline void
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I_swap_to_big_endian( boost::uint32_t& u) {
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(void) u;
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#ifdef CGAL_LITTLE_ENDIAN
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u = ((u >> 24) | (u << 24) | ((u >> 8) & 0xff00) | ((u << 8) & 0xff0000));
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#endif
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}
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inline void
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I_swap_to_big_endian( boost::int32_t& i) {
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// We need to use a union instead of the 2 lines below,
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// otherwise we get aliasing issues.
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// boost::uint32_t& u = (boost::uint32_t&)i;
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// I_swap_to_big_endian( u);
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union {
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boost::int32_t in;
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boost::uint32_t ui;
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} u;
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u.in = i;
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I_swap_to_big_endian(u.ui);
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i = u.in;
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}
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inline void
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I_swap_to_big_endian( float& f) {
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// We need to use a union instead of the 2 lines below,
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// otherwise we get aliasing issues.
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// boost::uint32_t& u = (boost::uint32_t&)f;
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// I_swap_to_big_endian( u);
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union {
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boost::uint32_t ui;
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float fl;
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} u;
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u.fl = f;
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I_swap_to_big_endian(u.ui);
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f = u.fl;
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}
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inline void
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I_Binary_write_big_endian_integer32(std::ostream& out, boost::int32_t i) {
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I_swap_to_big_endian( i);
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out.write( (char*)(&i), 4);
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}
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inline void
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I_Binary_write_big_endian_float32(std::ostream& out, float f) {
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I_swap_to_big_endian( f);
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out.write( (char*)(&f), 4);
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}
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inline void
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I_Binary_read_big_endian_integer32(std::istream& in, boost::int32_t& i) {
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in.read( (char*)(&i), 4);
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I_swap_to_big_endian( i);
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}
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inline void
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I_Binary_read_big_endian_float32(std::istream& in, float& f) {
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in.read( (char*)(&f), 4);
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I_swap_to_big_endian( f);
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}
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} //namespace CGAL
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#endif // CGAL_IO_BINARY_FILE_IO_H
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