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Add equal_to, minus, multiplies to CGAL::Kernel_d with a nested result_type

This commit is contained in:
Andreas Fabri 2021-02-02 10:11:42 +00:00
parent 6511f95999
commit 4fd0e5ca31
1 changed files with 36 additions and 3 deletions
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39
Kernel_d/include/CGAL/Kernel_d/Iso_box_d.h
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@ -32,6 +32,39 @@ namespace CGAL {
struct Begin {};
struct End {};
struct Cartesian_end {};
template <typename T>
struct equal_to {
typedef bool result_type;
bool operator()(const T &lhs, const T &rhs) const
{
return lhs == rhs;
}
};
template <typename T>
struct minus {
typedef bool result_type;
T operator()(const T &lhs, const T &rhs) const
{
return lhs - rhs;
}
};
template <typename T>
struct multiplies {
typedef bool result_type;
T operator()(const T &lhs, const T &rhs) const
{
return lhs * rhs;
}
};
} // namespace Kernel_d
template < typename Point_, typename Functor_ >
@ -277,11 +310,11 @@ namespace CGAL {
RT volume_nominator() const
{
typedef typename CIRT::template Iterator<Point_d,std::minus<RT> >::type
typedef typename CIRT::template Iterator<Point_d,Kernel_d::minus<RT> >::type
Iter;
Iter b(ptr()->upper, ptr()->lower, Begin());
Iter e(ptr()->upper, ptr()->lower, Cartesian_end());
return std::accumulate(b, e, RT(1), std::multiplies<RT>());
return std::accumulate(b, e, RT(1), Kernel_d::multiplies<RT>());
}
RT volume_denominator() const
@ -373,7 +406,7 @@ public:
bool is_degenerate() const
{
typedef typename CIRT::
template Iterator<Point_d,std::equal_to<RT> >::type Iter;
template Iterator<Point_d,Kernel_d::equal_to<RT> >::type Iter;
// omit homogenizing coordinates
Iter e(ptr()->lower, ptr()->upper, Cartesian_end());
return