/usr/include/CGAL/IEEE_754_unions.h is in libcgal-dev 4.2-5ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | // Copyright (c) 1999
// 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.
//
// $URL$
// $Id$
//
//
// Author(s) : Stefan Schirra
#ifndef CGAL_IEEE_754_UNIONS_H
#define CGAL_IEEE_754_UNIONS_H
#include <iomanip>
#include <iostream>
union IEEE_754_double
{
double a;
#ifdef CGAL_BIG_ENDIAN
struct { unsigned sign : 1;
unsigned exp :11;
unsigned high :20;
unsigned low :32;
} b;
struct { unsigned H :32;
unsigned L :32;
} c;
#else
struct { unsigned low :32;
unsigned sign : 1;
unsigned exp :11;
unsigned high :20;
} b;
struct { unsigned L :32;
unsigned H :32;
} c;
#endif
};
union IEEE_754_float
{
float a;
struct { unsigned sign : 1;
unsigned exp : 8;
unsigned high :23;
} b;
unsigned c;
};
inline
void
show( IEEE_754_double* p)
{
std::cout << std::endl;
std::cout << std::hex << std::setw(8) << std::setfill('0') << p->c.H;
std::cout << ' ';
std::cout << std::hex << std::setw(8) << std::setfill('0') << p->c.L;
std::cout << std::endl;
}
inline
void
show( IEEE_754_float* p)
{
std::cout << std::endl;
std::cout << std::hex << std::setw(8) << std::setfill('0') << p->c;
std::cout << std::endl;
}
#endif // CGAL_IEEE_754_UNIONS_H
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