libstdc++-v3/testsuite/26_numerics/complex/value_operations/1.cc

// { dg-do run { xfail broken_cplxf_arg } }
// { dg-options "-O0" }
// 2000-11-20
// Benjamin Kosnik bkoz@redhat.com

// Copyright (C) 2000-2021 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

#include <complex>
#include <testsuite_hooks.h>

void test01()
{
 using namespace std;
 typedef complex<double> complex_type;
 const double cd1 = -11.451;
 const double cd2 = -442.1533;

 complex_type a(cd1, cd2);
 double d;
 d = a.real();
 VERIFY( d == cd1 );

 d = a.imag();
 VERIFY( d == cd2 );

 complex_type c(cd1, cd2);
 double d6 = abs(c);
 VERIFY( d6 >= 0 );

 double d7 = arg(c);
 double d8 = atan2(c.imag(), c.real());
 VERIFY( d7 == d8 );

 double d9 = norm(c);
 double d10 = d6 * d6;
 VERIFY( d9 - d10 == 0 );

 complex_type e __attribute__((unused)) = conj(c);
 
 complex_type f = polar(std::abs(c.imag()), 0.0);
 VERIFY( f.real() != 0 );
}


int main()
{
  test01();
  return 0;
}