libstdc++-v3/testsuite/26_numerics/complex/dr781.cc

   1 // { dg-do run { target c++11 } }
   2 // 2008-05-22  Paolo Carlini  <paolo.carlini@oracle.com>
   3 //
   4 // Copyright (C) 2008-2023 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11 //
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <complex>
  22 #include <testsuite_hooks.h>
  23 #include <testsuite_tr1.h>
  24
  25 // DR 781. std::complex should add missing C99 functions.
  26 // DR 1137. Return type of conj and proj.
  27 // 1522. conj specification is now nonsense
  28 void test01()
  29 {
  30   using __gnu_test::check_ret_type;
  31
  32   typedef std::complex<float>       cmplx_f_type;
  33   typedef std::complex<double>      cmplx_d_type;
  34   typedef std::complex<long double> cmplx_ld_type;
  35
  36   const int          i1 = 1;
  37   const float        f1 = 1.0f;
  38   const double       d1 = 1.0;
  39   const long double ld1 = 1.0l;
  40
  41   const cmplx_f_type  c_f1(f1, f1);
  42   const cmplx_d_type  c_d1(d1, d1);
  43   const cmplx_ld_type c_ld1(ld1, ld1);
  44
  45   check_ret_type<cmplx_f_type>(std::proj(c_f1));
  46   check_ret_type<cmplx_d_type>(std::proj(c_d1));
  47   check_ret_type<cmplx_ld_type>(std::proj(c_ld1));
  48
  49   check_ret_type<cmplx_f_type>(std::proj(f1));
  50   check_ret_type<cmplx_d_type>(std::proj(d1));
  51   check_ret_type<cmplx_d_type>(std::proj(i1));
  52   check_ret_type<cmplx_ld_type>(std::proj(ld1));
  53
  54   VERIFY( std::proj(f1) == std::proj(cmplx_f_type(f1)) );
  55   VERIFY( std::proj(d1) == std::proj(cmplx_d_type(d1)) );
  56   VERIFY( std::proj(ld1) == std::proj(cmplx_ld_type(ld1)) );
  57   VERIFY( std::proj(i1) == std::proj(double(i1)) );
  58
  59   check_ret_type<cmplx_f_type>(std::conj(c_f1));
  60   check_ret_type<cmplx_d_type>(std::conj(c_d1));
  61   check_ret_type<cmplx_ld_type>(std::conj(c_ld1));
  62
  63   check_ret_type<cmplx_f_type>(std::conj(f1));
  64   check_ret_type<cmplx_d_type>(std::conj(d1));
  65   check_ret_type<cmplx_d_type>(std::conj(i1));
  66   check_ret_type<cmplx_ld_type>(std::conj(ld1));
  67
  68   VERIFY( std::conj(f1) == std::conj(cmplx_f_type(f1)) );
  69   VERIFY( std::conj(d1) == std::conj(cmplx_d_type(d1)) );
  70   VERIFY( std::conj(ld1) == std::conj(cmplx_ld_type(ld1)) );
  71   VERIFY( std::conj(i1) == std::conj(double(i1)) );
  72   VERIFY( std::signbit(std::conj(f1).imag()) );
  73   VERIFY( std::signbit(std::conj(d1).imag()) );
  74   VERIFY( std::signbit(std::conj(ld1).imag()) );
  75 }
  76
  77 int main()
  78 {
  79   test01();
  80   return 0;
  81 }