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// Copyright (c) 1997
// Utrecht University (The Netherlands),
// ETH Zurich (Switzerland),
// INRIA Sophia-Antipolis (France),
// Max-Planck-Institute Saarbruecken (Germany),
// and Tel-Aviv University (Israel). All rights reserved.
//
// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 3 of the License,
// or (at your option) any later version.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/next/Stream_support/include/CGAL/IO/binary_file_io.h $
// $Id: binary_file_io.h 67093 2012-01-13 11:22:39Z lrineau $
//
//
// Author(s) : Lutz Kettner <kettner@mpi-sb.mpg.de>
#ifndef CGAL_IO_BINARY_FILE_IO_H
#define CGAL_IO_BINARY_FILE_IO_H
#include <CGAL/basic.h>
#include <iostream>
#include <boost/cstdint.hpp>
namespace CGAL {
inline void
I_Binary_write_integer32(std::ostream& out, boost::int32_t i) {
out.write( (char*)(&i), 4);
}
inline void
I_Binary_write_float32(std::ostream& out, float f) {
out.write( (char*)(&f), 4);
}
inline void
I_Binary_read_integer32(std::istream& in, boost::int32_t& i) {
in.read( (char*)(&i), 4);
}
inline void
I_Binary_read_float32(std::istream& in, float& f) {
in.read( (char*)(&f), 4);
}
inline void
I_swap_to_big_endian( boost::uint32_t& u) {
(void) u;
#ifdef CGAL_LITTLE_ENDIAN
u = ((u >> 24) | (u << 24) | ((u >> 8) & 0xff00) | ((u << 8) & 0xff0000));
#endif
}
inline void
I_swap_to_big_endian( boost::int32_t& i) {
// We need to use a union instead of the 2 lines below,
// otherwise we get aliasing issues.
// boost::uint32_t& u = (boost::uint32_t&)i;
// I_swap_to_big_endian( u);
union {
boost::int32_t in;
boost::uint32_t ui;
} u;
u.in = i;
I_swap_to_big_endian(u.ui);
i = u.in;
}
inline void
I_swap_to_big_endian( float& f) {
// We need to use a union instead of the 2 lines below,
// otherwise we get aliasing issues.
// boost::uint32_t& u = (boost::uint32_t&)f;
// I_swap_to_big_endian( u);
union {
boost::uint32_t ui;
float fl;
} u;
u.fl = f;
I_swap_to_big_endian(u.ui);
f = u.fl;
}
inline void
I_Binary_write_big_endian_integer32(std::ostream& out, boost::int32_t i) {
I_swap_to_big_endian( i);
out.write( (char*)(&i), 4);
}
inline void
I_Binary_write_big_endian_float32(std::ostream& out, float f) {
I_swap_to_big_endian( f);
out.write( (char*)(&f), 4);
}
inline void
I_Binary_read_big_endian_integer32(std::istream& in, boost::int32_t& i) {
in.read( (char*)(&i), 4);
I_swap_to_big_endian( i);
}
inline void
I_Binary_read_big_endian_float32(std::istream& in, float& f) {
in.read( (char*)(&f), 4);
I_swap_to_big_endian( f);
}
} //namespace CGAL
#endif // CGAL_IO_BINARY_FILE_IO_H
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