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, 2003 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 __attribute__((unused)) = 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   return 0;
  51 }
  52
  53 template<typename R>
  54 int
  55 test_fail(std::string str)
  56 {
  57   bool test __attribute__((unused)) = true;
  58   std::complex<R> z;
  59   std::istringstream iss(str);
  60   iss >> z;
  61   VERIFY( iss.fail() && !iss.bad() );
  62   return 0;
  63 }
  64
  65 template<typename R>
  66 int
  67 testall()
  68 {
  69   test_good<R>("(-1.1,3.7)#", -1.1, 3.7);
  70   test_good<R>("(  .7e6  ,  \n-3.1)#", .7e6, -3.1);
  71   test_good<R>("(\t0,-1)#", 0.0, -1.0);
  72   test_good<R>("(-3.14)#", -3.14, 0.0);
  73   test_good<R>("-.1#", -.1, 0.0);
  74   test_good<R>(" ( -2.7e3 )#", -2.7e3, 0.0);
  75   test_good<R>(" -.1#", -.1, 0.0);
  76   test_fail<R>("(a,1)");
  77   test_fail<R>("(,1)");
  78   test_fail<R>("(1,a)");
  79   test_fail<R>("(1, )");
  80   test_fail<R>("|1,1)");
  81   test_fail<R>("(1|1)");
  82   test_fail<R>("(1,1|");
  83   return 0;
  84 }
  85
  86 // libstdc++/2970
  87 void test01()
  88 {
  89   using namespace std;
  90   bool test __attribute__((unused)) = true;
  91
  92   complex<float> cf01(-1.1, -333.2);
  93   stringstream ss;
  94   ss << cf01;
  95   string str = ss.str();
  96   VERIFY( str == "(-1.1,-333.2)" );
  97 }
  98
  99 // libstdc++/2985
 100 struct gnu_char_traits : public std::char_traits<char>
 101 { };
 102
 103 typedef std::basic_ostringstream<char, gnu_char_traits> gnu_sstream;
 104 template class std::basic_string<char, gnu_char_traits, std::allocator<char> >;
 105
 106 void test02()
 107 {
 108   bool test __attribute__((unused)) = true;
 109
 110   // Construct locale with specialized facets.
 111   typedef gnu_sstream::__num_put_type numput_type;
 112   typedef gnu_sstream::__num_get_type numget_type;
 113   std::locale loc_c = std::locale::classic();
 114   std::locale loc_1(loc_c, new numput_type);
 115   std::locale loc_2(loc_1, new numget_type);
 116   VERIFY( std::has_facet<numput_type>(loc_2) );
 117   VERIFY( std::has_facet<numget_type>(loc_2) );
 118
 119   gnu_sstream sstr;
 120   sstr.imbue(loc_2);
 121
 122
 123   std::complex<double> x(3, 4);
 124   sstr << x;
 125   VERIFY( sstr.str() == "(3,4)" );
 126 }
 127
 128 int
 129 main()
 130 {
 131   testall<float>();
 132   testall<double>();
 133   testall<long double>();
 134
 135   test01();
 136   test02();
 137
 138   return 0;
 139 }
 140
 141
 142
 143