libstdc++-v3/testsuite/27_io/basic_ostream/inserters_arithmetic/char/hexfloat.cc

   1 // { dg-do run { target c++11 } }
   2 // { dg-require-string-conversions "" }
   3 // { dg-xfail-run-if "broken long double IO" { newlib_broken_long_double_io  } }
   4
   5 // 2014-03-27 Rüdiger Sonderfeld
   6 // test the hexadecimal floating point inserters (facet num_put)
   7
   8 // Copyright (C) 2014-2022 Free Software Foundation, Inc.
   9 //
  10 // This file is part of the GNU ISO C++ Library.  This library is free
  11 // software; you can redistribute it and/or modify it under the
  12 // terms of the GNU General Public License as published by the
  13 // Free Software Foundation; either version 3, or (at your option)
  14 // any later version.
  15
  16 // This library is distributed in the hope that it will be useful,
  17 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 // GNU General Public License for more details.
  20
  21 // You should have received a copy of the GNU General Public License along
  22 // with this library; see the file COPYING3.  If not see
  23 // <http://www.gnu.org/licenses/>.
  24
  25 #include <iomanip>
  26 #include <sstream>
  27 #include <string>
  28 #include <testsuite_hooks.h>
  29
  30 #ifdef TEST_NUMPUT_VERBOSE
  31 #  include <iostream>
  32 #endif
  33
  34 using namespace std;
  35
  36 void
  37 test01()
  38 {
  39   ostringstream os;
  40   double d = 272.; // 0x1.1p+8;
  41 #ifdef TEST_NUMPUT_VERBOSE
  42   cout << os.precision() << endl;
  43 #endif
  44   os << hexfloat << setprecision(1);
  45   os << d;
  46 #ifdef TEST_NUMPUT_VERBOSE
  47   cout << "got: " << os.str() << endl;
  48 #endif
  49   VERIFY( os && std::stod(os.str()) == d );
  50   VERIFY( os.str().substr(0, 2) == "0x" );
  51   VERIFY( os.str().find('p') != std::string::npos );
  52
  53   os.str("");
  54   os << uppercase << d;
  55 #ifdef TEST_NUMPUT_VERBOSE
  56   cout << "got: " << os.str() << endl;
  57 #endif
  58   VERIFY( os && std::stod(os.str()) == d );
  59   VERIFY( os.str().substr(0, 2) == "0X" );
  60   VERIFY( os.str().find('P') != std::string::npos );
  61
  62   os << nouppercase;
  63   os.str("");
  64   os << defaultfloat << setprecision(6);
  65   os << d;
  66 #ifdef TEST_NUMPUT_VERBOSE
  67   cout << "got: " << os.str() << endl;
  68 #endif
  69   VERIFY( os && os.str() == "272" );
  70
  71   os.str("");
  72   d = 15.; //0x1.ep+3;
  73   os << hexfloat << setprecision(1);
  74   os << d;
  75 #ifdef TEST_NUMPUT_VERBOSE
  76   cout << "got: " << os.str() << endl;
  77 #endif
  78   VERIFY( os && std::stod(os.str()) == d );
  79   os.str("");
  80   os << uppercase << d;
  81 #ifdef TEST_NUMPUT_VERBOSE
  82   cout << "got: " << os.str() << endl;
  83 #endif
  84   VERIFY( os && std::stod(os.str()) == d );
  85   os << nouppercase;
  86   os.str("");
  87   os << defaultfloat << setprecision(6);
  88   os << d;
  89 #ifdef TEST_NUMPUT_VERBOSE
  90   cout << "got: " << os.str() << endl;
  91 #endif
  92   VERIFY( os && os.str() == "15" );
  93 }
  94
  95 void
  96 test02()
  97 {
  98   ostringstream os;
  99   long double d = 272.L; // 0x1.1p+8L;
 100   os << hexfloat << setprecision(1);
 101   os << d;
 102 #ifdef TEST_NUMPUT_VERBOSE
 103   cout << "got: " << os.str() << endl;
 104 #endif
 105   VERIFY( os && std::stold(os.str()) == d );
 106   os.str("");
 107   os << uppercase << d;
 108 #ifdef TEST_NUMPUT_VERBOSE
 109   cout << "got: " << os.str() << endl;
 110 #endif
 111   VERIFY( os && std::stold(os.str()) == d );
 112   os << nouppercase;
 113   os.str("");
 114   os << defaultfloat << setprecision(6);
 115   os << d;
 116 #ifdef TEST_NUMPUT_VERBOSE
 117   cout << "got: " << os.str() << endl;
 118 #endif
 119   VERIFY( os && os.str() == "272" );
 120
 121   os.str("");
 122   os << hexfloat << setprecision(1);
 123   d = 15.; //0x1.ep+3;
 124   os << d;
 125 #ifdef TEST_NUMPUT_VERBOSE
 126   cout << "got: " << os.str() << endl;
 127 #endif
 128   VERIFY( os && std::stold(os.str()) == d );
 129   os.str("");
 130   os << uppercase << d;
 131 #ifdef TEST_NUMPUT_VERBOSE
 132   cout << "got: " << os.str() << endl;
 133 #endif
 134   VERIFY( os && std::stold(os.str()) == d );
 135   os << nouppercase;
 136   os.str("");
 137   os << defaultfloat << setprecision(6);
 138   os << d;
 139 #ifdef TEST_NUMPUT_VERBOSE
 140   cout << "got: " << os.str() << endl;
 141 #endif
 142   VERIFY( os && os.str() == "15" );
 143 }
 144
 145 int
 146 main()
 147 {
 148   test01();
 149   test02();
 150 }