libcxx/test/std/numerics/complex.number/complex.ops/stream_input.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: no-localization
  10
  11 // <complex>
  12
  13 // template<class T, class charT, class traits>
  14 //   basic_istream<charT, traits>&
  15 //   operator>>(basic_istream<charT, traits>& is, complex<T>& x);
  16
  17 #include <complex>
  18 #include <sstream>
  19 #include <cassert>
  20
  21 #include "test_macros.h"
  22
  23 int main(int, char**)
  24 {
  25     {
  26         std::istringstream is("5");
  27         std::complex<double> c;
  28         is >> c;
  29         assert(c == std::complex<double>(5, 0));
  30         assert(is.eof());
  31     }
  32     {
  33         std::istringstream is(" 5 ");
  34         std::complex<double> c;
  35         is >> c;
  36         assert(c == std::complex<double>(5, 0));
  37         assert(is.good());
  38     }
  39     {
  40         std::istringstream is(" 5, ");
  41         std::complex<double> c;
  42         is >> c;
  43         assert(c == std::complex<double>(5, 0));
  44         assert(is.good());
  45     }
  46     {
  47         std::istringstream is(" , 5, ");
  48         std::complex<double> c;
  49         is >> c;
  50         assert(c == std::complex<double>(0, 0));
  51         assert(is.fail());
  52     }
  53     {
  54         std::istringstream is("5.5 ");
  55         std::complex<double> c;
  56         is >> c;
  57         assert(c == std::complex<double>(5.5, 0));
  58         assert(is.good());
  59     }
  60     {
  61         std::istringstream is(" ( 5.5 ) ");
  62         std::complex<double> c;
  63         is >> c;
  64         assert(c == std::complex<double>(5.5, 0));
  65         assert(is.good());
  66     }
  67     {
  68         std::istringstream is("  5.5)");
  69         std::complex<double> c;
  70         is >> c;
  71         assert(c == std::complex<double>(5.5, 0));
  72         assert(is.good());
  73     }
  74     {
  75         std::istringstream is("(5.5 ");
  76         std::complex<double> c;
  77         is >> c;
  78         assert(c == std::complex<double>(0, 0));
  79         assert(is.fail());
  80     }
  81     {
  82         std::istringstream is("(5.5,");
  83         std::complex<double> c;
  84         is >> c;
  85         assert(c == std::complex<double>(0, 0));
  86         assert(is.fail());
  87     }
  88     {
  89         std::istringstream is("( -5.5 , -6.5 )");
  90         std::complex<double> c;
  91         is >> c;
  92         assert(c == std::complex<double>(-5.5, -6.5));
  93         assert(!is.eof());
  94     }
  95     {
  96         std::istringstream is("(-5.5,-6.5)");
  97         std::complex<double> c;
  98         is >> c;
  99         assert(c == std::complex<double>(-5.5, -6.5));
 100         assert(!is.eof());
 101     }
 102
 103   return 0;
 104 }