mirror of https://github.com/CGAL/cgal
115 lines
3.0 KiB
C++
115 lines
3.0 KiB
C++
// Copyright (c) 1997 Utrecht University (The Netherlands),
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// ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany),
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// INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg
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// (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria),
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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; version 2.1 of the License.
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// See the file LICENSE.LGPL distributed with CGAL.
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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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// $Source$
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// $Revision$ $Date$
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// $Name$
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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/basic.h>
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#include <CGAL/known_bit_size_integers.h>
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#include <iostream>
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CGAL_BEGIN_NAMESPACE
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inline void
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I_Binary_write_integer32(std::ostream& out, Integer32 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, Integer32& 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( UInteger32& 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( Integer32& 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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// UInteger32& u = (UInteger32&)i;
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// I_swap_to_big_endian( u);
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union {
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Integer32 in;
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UInteger32 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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// UInteger32& u = (UInteger32&)f;
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// I_swap_to_big_endian( u);
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union {
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UInteger32 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, Integer32 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, Integer32& 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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CGAL_END_NAMESPACE
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#endif // CGAL_IO_BINARY_FILE_IO_H
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