/usr/include/CGAL/certified_numeric_predicates.h is in libcgal-dev 4.11-2build1.
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 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 | // Copyright (c) 2006-2008 Fernando Luis Cacciola Carballal. 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) : Fernando Cacciola <fernando_cacciola@ciudad.com.ar>
//
#ifndef CGAL_CERTIFIED_NUMERIC_PREDICATES_H
#define CGAL_CERTIFIED_NUMERIC_PREDICATES_H
#include <CGAL/license/Straight_skeleton_2.h>
#include <CGAL/number_utils.h>
#include <CGAL/Interval_arithmetic.h>
#include <CGAL/Uncertain.h>
namespace CGAL {
inline Uncertain<bool> logical_or ( Uncertain<bool> a, Uncertain<bool> b ) { return a | b ; }
inline Uncertain<bool> logical_and( Uncertain<bool> a, Uncertain<bool> b ) { return a & b ; }
inline Uncertain<bool> logical_or ( Uncertain<bool> a, Uncertain<bool> b, Uncertain<bool> c ) { return a | b | c ; }
inline Uncertain<bool> logical_and( Uncertain<bool> a, Uncertain<bool> b, Uncertain<bool> c ) { return a & b & c ; }
template <class NT>
inline Uncertain<bool> certified_is_zero(const NT& x)
{
return CGAL_NTS is_valid(x) ? make_uncertain(CGAL_NTS is_zero(x)) : Uncertain<bool>::indeterminate() ;
}
template <class NT>
inline Uncertain<bool> certified_is_not_zero(const NT& x)
{
return CGAL_NTS is_valid(x) ? make_uncertain(!CGAL_NTS is_zero(x)) : Uncertain<bool>::indeterminate() ;
}
template <class NT>
inline Uncertain<bool> certified_is_one(const NT& x)
{
return CGAL_NTS is_valid(x) ? make_uncertain(CGAL_NTS is_one(x) ) : Uncertain<bool>::indeterminate() ;
}
template <class NT>
inline Uncertain<bool> certified_is_negative(const NT& x)
{
return CGAL_NTS is_valid(x) ? make_uncertain(CGAL_NTS is_negative(x) ) : Uncertain<bool>::indeterminate() ;
}
template <class NT>
inline Uncertain<bool> certified_is_positive(const NT& x)
{
return CGAL_NTS is_valid(x) ? make_uncertain(CGAL_NTS is_positive(x) ) : Uncertain<bool>::indeterminate() ;
}
template <class NT>
inline Uncertain<Sign> certified_sign(const NT& x)
{
return CGAL_NTS is_valid(x) ? make_uncertain(CGAL_NTS sign(x)) : Uncertain<Sign>::indeterminate() ;
}
template <class NT1, class NT2>
inline Uncertain<Comparison_result> certified_compare(const NT1& n1, const NT2& n2)
{
return CGAL_NTS is_valid(n1) && CGAL_NTS is_valid(n2) ? make_uncertain(CGAL_NTS compare(n1,n2))
: Uncertain<Comparison_result>::indeterminate() ;
}
inline Uncertain<bool> certified_is_smaller( Uncertain<Comparison_result> c )
{
return c == SMALLER;
}
inline Uncertain<bool> certified_is_equal( Uncertain<Comparison_result> c )
{
return c == EQUAL;
}
inline Uncertain<bool> certified_is_larger( Uncertain<Comparison_result> c )
{
return c == LARGER;
}
inline Uncertain<bool> certified_is_smaller_or_equal( Uncertain<Comparison_result> c )
{
return logical_or( c == SMALLER , c == EQUAL ) ;
}
inline Uncertain<bool> certified_is_larger_or_equal( Uncertain<Comparison_result> c )
{
return logical_or( c == LARGER , c == EQUAL ) ;
}
template <class NT1, class NT2>
inline Uncertain<bool> certified_is_smaller(const NT1& n1, const NT2& n2)
{
return certified_is_smaller(certified_compare(n1,n2));
}
template <class NT1, class NT2>
inline Uncertain<bool> certified_is_equal(const NT1& n1, const NT2& n2)
{
return certified_is_equal(certified_compare(n1,n2));
}
template <class NT1, class NT2>
inline Uncertain<bool> certified_is_larger(const NT1& n1, const NT2& n2)
{
return certified_is_larger(certified_compare(n1,n2));
}
template <class NT1, class NT2>
inline Uncertain<bool> certified_is_smaller_or_equal(const NT1& n1, const NT2& n2)
{
return certified_is_smaller_or_equal(certified_compare(n1,n2)) ;
}
template <class NT1, class NT2>
inline Uncertain<bool> certified_is_larger_or_equal(const NT1& n1, const NT2& n2)
{
return certified_is_larger_or_equal(certified_compare(n1,n2)) ;
}
template <class NT>
inline Uncertain<Sign> certified_sign_of_determinant2x2( const NT& a00
, const NT& a01
, const NT& a10
, const NT& a11
)
{
return certified_compare(a00*a11, a10*a01) ;
}
} // end namespace CGAL
#endif // CGAL_CERTIFIED_NUMERIC_PREDICATES_H
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