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

   1 // 2000-02-10
   2 // Petter Urkedal <petter@matfys.lth.se>
   3
   4 // Copyright (C) 2000-2019 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
  22 #include <iostream>
  23 #include <string>
  24 #include <sstream>
  25 #include <complex>
  26 #include <testsuite_hooks.h>
  27 #include <cmath>
  28
  29 template<typename R>
  30 inline bool flteq(R x, R y)
  31 {
  32   if (x == R(0)) return y == R(0);
  33   else return std::fabs(x-y) < 1e-6*std::fabs(x);
  34 }
  35
  36 template<typename R>
  37 int
  38 test_good(std::string str, R x, R y)
  39 {
  40   std::complex<R> z;
  41   char ch;
  42   std::istringstream iss(str);
  43   iss >> z >> ch;
  44   VERIFY( iss.good() );
  45   VERIFY( flteq(z.real(), x) );
  46   VERIFY( flteq(z.imag(), y) );
  47   VERIFY( ch == '#' );
  48   return 0;
  49 }
  50
  51 template<typename R>
  52 int
  53 test_fail(std::string str)
  54 {
  55   std::complex<R> z;
  56   std::istringstream iss(str);
  57   iss >> z;
  58   VERIFY( iss.fail() && !iss.bad() );
  59   return 0;
  60 }
  61
  62 template<typename R>
  63 int
  64 testall()
  65 {
  66   test_good<R>("(-1.1,3.7)#", -1.1, 3.7);
  67   test_good<R>("(  .7e6  ,  \n-3.1)#", .7e6, -3.1);
  68   test_good<R>("(\t0,-1)#", 0.0, -1.0);
  69   test_good<R>("(-3.14)#", -3.14, 0.0);
  70   test_good<R>("-.1#", -.1, 0.0);
  71   test_good<R>(" ( -2.7e3 )#", -2.7e3, 0.0);
  72   test_good<R>(" -.1#", -.1, 0.0);
  73   test_fail<R>("(a,1)");
  74   test_fail<R>("(,1)");
  75   test_fail<R>("(1,a)");
  76   test_fail<R>("(1, )");
  77   test_fail<R>("|1,1)");
  78   test_fail<R>("(1|1)");
  79   test_fail<R>("(1,1|");
  80   return 0;
  81 }
  82
  83 // libstdc++/2970
  84 void test01()
  85 {
  86   using namespace std;
  87
  88   complex<float> cf01(-1.1, -333.2);
  89   stringstream ss;
  90   ss << cf01;
  91   string str = ss.str();
  92   VERIFY( str == "(-1.1,-333.2)" );
  93 }
  94
  95 // libstdc++/2985
  96 struct gnu_char_traits : public std::char_traits<char>
  97 { };
  98
  99 typedef std::basic_ostringstream<char, gnu_char_traits> gnu_sstream;
 100 template class std::basic_string<char, gnu_char_traits, std::allocator<char> >;
 101
 102 void test02()
 103 {
 104   // Construct locale with specialized facets.
 105   typedef gnu_sstream::__num_put_type numput_type;
 106   typedef gnu_sstream::__num_get_type numget_type;
 107   std::locale loc_c = std::locale::classic();
 108   std::locale loc_1(loc_c, new numput_type);
 109   std::locale loc_2(loc_1, new numget_type);
 110   VERIFY( std::has_facet<numput_type>(loc_2) );
 111   VERIFY( std::has_facet<numget_type>(loc_2) );
 112
 113   gnu_sstream sstr;
 114   sstr.imbue(loc_2);
 115
 116
 117   std::complex<double> x(3, 4);
 118   sstr << x;
 119   VERIFY( sstr.str() == "(3,4)" );
 120 }
 121
 122 int
 123 main()
 124 {
 125   testall<float>();
 126   testall<double>();
 127   testall<long double>();
 128
 129   test01();
 130   test02();
 131
 132   return 0;
 133 }