libstdc++-v3/testsuite/26_numerics/complex_inserters_extractors.cc

   1 // 2000-02-10
   2 // Petter Urkedal <petter@matfys.lth.se>
   3
   4 // Copyright (C) 2000 Free Software Foundation
   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 2, 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 COPYING.  If not, write to the Free
  19 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  20 // USA.
  21
  22
  23 #include <iostream>
  24 #include <string>
  25 #include <sstream>
  26 #include <complex>
  27 #include <testsuite_hooks.h>
  28 #include <cmath>
  29
  30 template<typename R>
  31 inline bool flteq(R x, R y)
  32 {
  33   if (x == R(0)) return y == R(0);
  34   else return std::fabs(x-y) < 1e-6*std::fabs(x);
  35 }
  36
  37 template<typename R>
  38 int
  39 test_good(std::string str, R x, R y)
  40 {
  41   bool test = true;
  42   std::complex<R> z;
  43   char ch;
  44   std::istringstream iss(str);
  45   iss >> z >> ch;
  46   VERIFY( iss.good() );
  47   VERIFY( flteq(z.real(), x) );
  48   VERIFY( flteq(z.imag(), y) );
  49   VERIFY( ch == '#' );
  50
  51 #ifdef DEBUG_ASSERT
  52   assert(test);
  53 #endif
  54   return 0;
  55 }
  56
  57 template<typename R>
  58 int
  59 test_fail(std::string str)
  60 {
  61   std::complex<R> z;
  62   std::istringstream iss(str);
  63   iss >> z;
  64 #ifdef DEBUG_ASSERT
  65   assert(iss.fail() && !iss.bad());
  66 #endif
  67   return 0;
  68 }
  69
  70 template<typename R>
  71 int
  72 testall()
  73 {
  74   test_good<R>("(-1.1,3.7)#", -1.1, 3.7);
  75   test_good<R>("(  .7e6  ,  \n-3.1)#", .7e6, -3.1);
  76   test_good<R>("(\t0,-1)#", 0.0, -1.0);
  77   test_good<R>("(-3.14)#", -3.14, 0.0);
  78   test_good<R>("-.1#", -.1, 0.0);
  79   test_good<R>(" ( -2.7e3 )#", -2.7e3, 0.0);
  80   test_good<R>(" -.1#", -.1, 0.0);
  81   test_fail<R>("(a,1)");
  82   test_fail<R>("(,1)");
  83   test_fail<R>("(1,a)");
  84   test_fail<R>("(1, )");
  85   test_fail<R>("|1,1)");
  86   test_fail<R>("(1|1)");
  87   test_fail<R>("(1,1|");
  88   return 0;
  89 }
  90
  91 // libstdc++/2970
  92 void test01()
  93 {
  94   using namespace std;
  95   bool test = true;
  96
  97   complex<float> cf01(-1.1, -333.2);
  98   stringstream ss;
  99   ss << cf01;
 100   string str = ss.str();
 101   VERIFY( str == "(-1.1,-333.2)" );
 102 }
 103
 104 // libstdc++/2985
 105 struct gnu_char_traits : public std::char_traits<char>
 106 { };
 107
 108 typedef std::basic_ostringstream<char, gnu_char_traits> gnu_sstream;
 109 template class std::basic_string<char, gnu_char_traits, std::allocator<char> >;
 110
 111 void test02()
 112 {
 113   bool test = true;
 114
 115   // Construct locale with specialized facets.
 116   typedef gnu_sstream::__numput_type numput_type;
 117   typedef gnu_sstream::__numget_type numget_type;
 118   std::locale loc_c = std::locale::classic();
 119   std::locale loc_1(loc_c, new numput_type);
 120   std::locale loc_2(loc_1, new numget_type);
 121   VERIFY( std::has_facet<numput_type>(loc_2) );
 122   VERIFY( std::has_facet<numget_type>(loc_2) );
 123
 124   gnu_sstream sstr;
 125   std::basic_ios<char, gnu_char_traits>* pios = &sstr;
 126   sstr.imbue(loc_2);
 127
 128
 129   std::complex<double> x(3, 4);
 130   sstr << x;
 131   VERIFY( sstr.str() == "(3,4)" );
 132 }
 133
 134 int
 135 main()
 136 {
 137   testall<float>();
 138   testall<double>();
 139   testall<long double>();
 140
 141   test01();
 142   test02();
 143
 144   return 0;
 145 }
 146
 147
 148
 149