ground/gcs/src/libs/eigen/test/meta.cpp

   1 // This file is part of Eigen, a lightweight C++ template library
   2 // for linear algebra.
   3 //
   4 // Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
   5 //
   6 // This Source Code Form is subject to the terms of the Mozilla
   7 // Public License v. 2.0. If a copy of the MPL was not distributed
   8 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
   9
  10 #include "main.h"
  11
  12 template<typename From, typename To>
  13 bool check_is_convertible(const From&, const To&)
  14 {
  15   return internal::is_convertible<From,To>::value;
  16 }
  17
  18 void test_meta()
  19 {
  20   VERIFY((internal::conditional<(3<4),internal::true_type, internal::false_type>::type::value));
  21   VERIFY(( internal::is_same<float,float>::value));
  22   VERIFY((!internal::is_same<float,double>::value));
  23   VERIFY((!internal::is_same<float,float&>::value));
  24   VERIFY((!internal::is_same<float,const float&>::value));
  25
  26   VERIFY(( internal::is_same<float,internal::remove_all<const float&>::type >::value));
  27   VERIFY(( internal::is_same<float,internal::remove_all<const float*>::type >::value));
  28   VERIFY(( internal::is_same<float,internal::remove_all<const float*&>::type >::value));
  29   VERIFY(( internal::is_same<float,internal::remove_all<float**>::type >::value));
  30   VERIFY(( internal::is_same<float,internal::remove_all<float**&>::type >::value));
  31   VERIFY(( internal::is_same<float,internal::remove_all<float* const *&>::type >::value));
  32   VERIFY(( internal::is_same<float,internal::remove_all<float* const>::type >::value));
  33
  34   // test add_const
  35   VERIFY(( internal::is_same< internal::add_const<float>::type, const float >::value));
  36   VERIFY(( internal::is_same< internal::add_const<float*>::type, float* const>::value));
  37   VERIFY(( internal::is_same< internal::add_const<float const*>::type, float const* const>::value));
  38   VERIFY(( internal::is_same< internal::add_const<float&>::type, float& >::value));
  39
  40   // test remove_const
  41   VERIFY(( internal::is_same< internal::remove_const<float const* const>::type, float const* >::value));
  42   VERIFY(( internal::is_same< internal::remove_const<float const*>::type, float const* >::value));
  43   VERIFY(( internal::is_same< internal::remove_const<float* const>::type, float* >::value));
  44
  45   // test add_const_on_value_type
  46   VERIFY(( internal::is_same< internal::add_const_on_value_type<float&>::type, float const& >::value));
  47   VERIFY(( internal::is_same< internal::add_const_on_value_type<float*>::type, float const* >::value));
  48
  49   VERIFY(( internal::is_same< internal::add_const_on_value_type<float>::type, const float >::value));
  50   VERIFY(( internal::is_same< internal::add_const_on_value_type<const float>::type, const float >::value));
  51
  52   VERIFY(( internal::is_same< internal::add_const_on_value_type<const float* const>::type, const float* const>::value));
  53   VERIFY(( internal::is_same< internal::add_const_on_value_type<float* const>::type, const float* const>::value));
  54
  55   VERIFY(( internal::is_same<float,internal::remove_reference<float&>::type >::value));
  56   VERIFY(( internal::is_same<const float,internal::remove_reference<const float&>::type >::value));
  57   VERIFY(( internal::is_same<float,internal::remove_pointer<float*>::type >::value));
  58   VERIFY(( internal::is_same<const float,internal::remove_pointer<const float*>::type >::value));
  59   VERIFY(( internal::is_same<float,internal::remove_pointer<float* const >::type >::value));
  60
  61   VERIFY(( internal::is_convertible<float,double>::value ));
  62   VERIFY(( internal::is_convertible<int,double>::value ));
  63   VERIFY(( internal::is_convertible<double,int>::value ));
  64   VERIFY((!internal::is_convertible<std::complex<double>,double>::value ));
  65   VERIFY(( internal::is_convertible<Array33f,Matrix3f>::value ));
  66 //   VERIFY((!internal::is_convertible<Matrix3f,Matrix3d>::value )); //does not work because the conversion is prevented by a static assertion
  67   VERIFY((!internal::is_convertible<Array33f,int>::value ));
  68   VERIFY((!internal::is_convertible<MatrixXf,float>::value ));
  69   {
  70     float f;
  71     MatrixXf A, B;
  72     VectorXf a, b;
  73     VERIFY(( check_is_convertible(a.dot(b), f) ));
  74     VERIFY(( check_is_convertible(a.transpose()*b, f) ));
  75     VERIFY((!check_is_convertible(A*B, f) ));
  76     VERIFY(( check_is_convertible(A*B, A) ));
  77   }
  78
  79   VERIFY(internal::meta_sqrt<1>::ret == 1);
  80   #define VERIFY_META_SQRT(X) VERIFY(internal::meta_sqrt<X>::ret == int(std::sqrt(double(X))))
  81   VERIFY_META_SQRT(2);
  82   VERIFY_META_SQRT(3);
  83   VERIFY_META_SQRT(4);
  84   VERIFY_META_SQRT(5);
  85   VERIFY_META_SQRT(6);
  86   VERIFY_META_SQRT(8);
  87   VERIFY_META_SQRT(9);
  88   VERIFY_META_SQRT(15);
  89   VERIFY_META_SQRT(16);
  90   VERIFY_META_SQRT(17);
  91   VERIFY_META_SQRT(255);
  92   VERIFY_META_SQRT(256);
  93   VERIFY_META_SQRT(257);
  94   VERIFY_META_SQRT(1023);
  95   VERIFY_META_SQRT(1024);
  96   VERIFY_META_SQRT(1025);
  97 }