libstdc++-v3/testsuite/26_numerics/numbers/1.cc

   1 // Copyright (C) 2019-2020 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-options "-std=gnu++2a" }
  19 // { dg-do compile { target c++2a } }
  20
  21 #include <numbers>
  22
  23 #ifndef __cpp_lib_math_constants
  24 # error "Feature-test macro for math constants missing in <numbers>"
  25 #elif __cpp_lib_math_constants != 201907L
  26 # error "Feature-test macro for math constants has wrong value in <numbers>"
  27 #endif
  28
  29 void
  30 test01()
  31 {
  32   const double* d1  = &std::numbers::e_v<double>;
  33   const double* d2  = &std::numbers::log2e_v<double>;
  34   const double* d3  = &std::numbers::log10e_v<double>;
  35   const double* d4  = &std::numbers::pi_v<double>;
  36   const double* d5  = &std::numbers::inv_pi_v<double>;
  37   const double* d6  = &std::numbers::inv_sqrtpi_v<double>;
  38   const double* d7  = &std::numbers::ln2_v<double>;
  39   const double* d8  = &std::numbers::ln10_v<double>;
  40   const double* d9  = &std::numbers::sqrt2_v<double>;
  41   const double* d10 = &std::numbers::sqrt3_v<double>;
  42   const double* d11 = &std::numbers::inv_sqrt3_v<double>;
  43   const double* d12 = &std::numbers::egamma_v<double>;
  44   const double* d13 = &std::numbers::phi_v<double>;
  45 }
  46
  47 void
  48 test02()
  49 {
  50   const float* d1  = &std::numbers::e_v<float>;
  51   const float* d2  = &std::numbers::log2e_v<float>;
  52   const float* d3  = &std::numbers::log10e_v<float>;
  53   const float* d4  = &std::numbers::pi_v<float>;
  54   const float* d5  = &std::numbers::inv_pi_v<float>;
  55   const float* d6  = &std::numbers::inv_sqrtpi_v<float>;
  56   const float* d7  = &std::numbers::ln2_v<float>;
  57   const float* d8  = &std::numbers::ln10_v<float>;
  58   const float* d9  = &std::numbers::sqrt2_v<float>;
  59   const float* d10 = &std::numbers::sqrt3_v<float>;
  60   const float* d11 = &std::numbers::inv_sqrt3_v<float>;
  61   const float* d12 = &std::numbers::egamma_v<float>;
  62   const float* d13 = &std::numbers::phi_v<float>;
  63 }
  64
  65 void
  66 test03()
  67 {
  68   const long double* d1  = &std::numbers::e_v<long double>;
  69   const long double* d2  = &std::numbers::log2e_v<long double>;
  70   const long double* d3  = &std::numbers::log10e_v<long double>;
  71   const long double* d4  = &std::numbers::pi_v<long double>;
  72   const long double* d5  = &std::numbers::inv_pi_v<long double>;
  73   const long double* d6  = &std::numbers::inv_sqrtpi_v<long double>;
  74   const long double* d7  = &std::numbers::ln2_v<long double>;
  75   const long double* d8  = &std::numbers::ln10_v<long double>;
  76   const long double* d9  = &std::numbers::sqrt2_v<long double>;
  77   const long double* d10 = &std::numbers::sqrt3_v<long double>;
  78   const long double* d11 = &std::numbers::inv_sqrt3_v<long double>;
  79   const long double* d12 = &std::numbers::egamma_v<long double>;
  80   const long double* d13 = &std::numbers::phi_v<long double>;
  81 }
  82
  83 void
  84 test04()
  85 {
  86   static_assert(std::numbers::e == std::numbers::e_v<double>);
  87   static_assert(std::numbers::log2e == std::numbers::log2e_v<double>);
  88   static_assert(std::numbers::log10e == std::numbers::log10e_v<double>);
  89   static_assert(std::numbers::pi == std::numbers::pi_v<double>);
  90   static_assert(std::numbers::inv_pi == std::numbers::inv_pi_v<double>);
  91   static_assert(std::numbers::inv_sqrtpi == std::numbers::inv_sqrtpi_v<double>);
  92   static_assert(std::numbers::ln2 == std::numbers::ln2_v<double>);
  93   static_assert(std::numbers::ln10 == std::numbers::ln10_v<double>);
  94   static_assert(std::numbers::sqrt2 == std::numbers::sqrt2_v<double>);
  95   static_assert(std::numbers::sqrt3 == std::numbers::sqrt3_v<double>);
  96   static_assert(std::numbers::inv_sqrt3 == std::numbers::inv_sqrt3_v<double>);
  97   static_assert(std::numbers::egamma == std::numbers::egamma_v<double>);
  98   static_assert(std::numbers::phi == std::numbers::phi_v<double>);
  99 }