libstdc++-v3/testsuite/27_io/basic_ostream/inserters_arithmetic/wchar_t/1.cc

   1 // 1999-11-15 Kevin Ediger  <kediger@licor.com>
   2 // test the floating point inserters (facet num_put)
   3
   4 // Copyright (C) 1999-2024 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 #include <iostream>
  22 #include <iomanip>
  23 #include <sstream>
  24 #include <limits>
  25 #include <testsuite_hooks.h>
  26
  27 using namespace std;
  28
  29 struct _TestCase
  30 {
  31   double val;
  32
  33   int precision;
  34   int width;
  35   char decimal;
  36   char fill;
  37
  38   bool fixed;
  39   bool scientific;
  40   bool showpos;
  41   bool showpoint;
  42   bool uppercase;
  43   bool internal;
  44   bool left;
  45   bool right;
  46
  47   const char* result;
  48   const wchar_t* wresult;
  49 };
  50
  51 static bool T=true;
  52 static bool F=false;
  53
  54 static _TestCase testcases[] =
  55 {
  56   // standard output (no formatting applied) 1-4
  57   { 1.2, 6,0,'.',' ', F,F,F,F,F,F,F,F, "1.2",L"1.2" },
  58   { 54, 6,0,'.',' ', F,F,F,F,F,F,F,F, "54",L"54" },
  59   { -.012, 6,0,'.',' ', F,F,F,F,F,F,F,F, "-0.012",L"-0.012" },
  60   { -.00000012, 6,0,'.',' ', F,F,F,F,F,F,F,F, "-1.2e-07",L"-1.2e-07" },
  61
  62   // fixed formatting 5-11
  63   { 10.2345, 0,0,'.',' ', T,F,F,F,F,F,F,F, "10",L"10" },
  64   { 10.2345, 0,0,'.',' ', T,F,F,T,F,F,F,F, "10.",L"10." },
  65   { 10.2345, 1,0,'.',' ', T,F,F,F,F,F,F,F, "10.2",L"10.2" },
  66   { 10.2345, 4,0,'.',' ', T,F,F,F,F,F,F,F, "10.2345",L"10.2345" },
  67   { 10.2345, 6,0,'.',' ', T,F,T,F,F,F,F,F, "+10.234500",L"+10.234500" },
  68   { -10.2345, 6,0,'.',' ', T,F,F,F,F,F,F,F, "-10.234500",L"-10.234500" },
  69   { -10.2345, 6,0,',',' ', T,F,F,F,F,F,F,F, "-10,234500",L"-10,234500" },
  70
  71   // fixed formatting with width 12-22
  72   { 10.2345, 4,5,'.',' ', T,F,F,F,F,F,F,F, "10.2345",L"10.2345" },
  73   { 10.2345, 4,6,'.',' ', T,F,F,F,F,F,F,F, "10.2345",L"10.2345" },
  74   { 10.2345, 4,7,'.',' ', T,F,F,F,F,F,F,F, "10.2345",L"10.2345" },
  75   { 10.2345, 4,8,'.',' ', T,F,F,F,F,F,F,F, " 10.2345",L" 10.2345" },
  76   { 10.2345, 4,10,'.',' ', T,F,F,F,F,F,F,F, "   10.2345",L"   10.2345" },
  77   { 10.2345, 4,10,'.',' ', T,F,F,F,F,F,T,F, "10.2345   ",L"10.2345   " },
  78   { 10.2345, 4,10,'.',' ', T,F,F,F,F,F,F,T, "   10.2345",L"   10.2345" },
  79   { 10.2345, 4,10,'.',' ', T,F,F,F,F,T,F,F, "   10.2345",L"   10.2345" },
  80   { -10.2345, 4,10,'.',' ', T,F,F,F,F,T,F,F, "-  10.2345",L"-  10.2345" },
  81   { -10.2345, 4,10,'.','A', T,F,F,F,F,T,F,F, "-AA10.2345",L"-AA10.2345" },
  82   { 10.2345, 4,10,'.','#', T,F,T,F,F,T,F,F, "+##10.2345",L"+##10.2345" },
  83
  84   // scientific formatting 23-29
  85   { 1.23e+12, 1,0,'.',' ', F,T,F,F,F,F,F,F, "1.2e+12",L"1.2e+12" },
  86   { 1.23e+12, 1,0,'.',' ', F,T,F,F,T,F,F,F, "1.2E+12",L"1.2E+12" },
  87   { 1.23e+12, 2,0,'.',' ', F,T,F,F,F,F,F,F, "1.23e+12",L"1.23e+12" },
  88   { 1.23e+12, 3,0,'.',' ', F,T,F,F,F,F,F,F, "1.230e+12",L"1.230e+12" },
  89   { 1.23e+12, 3,0,'.',' ', F,T,T,F,F,F,F,F, "+1.230e+12",L"+1.230e+12" },
  90   { -1.23e-12, 3,0,'.',' ', F,T,F,F,F,F,F,F, "-1.230e-12",L"-1.230e-12" },
  91   { 1.23e+12, 3,0,',',' ', F,T,F,F,F,F,F,F, "1,230e+12",L"1,230e+12" },
  92 };
  93
  94 template<typename _CharT>
  95 class testpunct : public numpunct<_CharT>
  96 {
  97 public:
  98   typedef _CharT  char_type;
  99   const char_type dchar;
 100
 101   explicit
 102   testpunct(char_type decimal_char) : numpunct<_CharT>(), dchar(decimal_char)
 103   { }
 104
 105 protected:
 106   char_type
 107   do_decimal_point() const
 108   { return dchar; }
 109
 110   char_type
 111   do_thousands_sep() const
 112   { return ','; }
 113
 114   string
 115   do_grouping() const
 116   { return string(); }
 117 };
 118
 119 template<typename _CharT>
 120 void apply_formatting(const _TestCase & tc, basic_ostream<_CharT> & os)
 121 {
 122   os.precision(tc.precision);
 123   os.width(tc.width);
 124   os.fill(static_cast<_CharT>(tc.fill));
 125   if (tc.fixed)
 126     os.setf(ios::fixed);
 127   if (tc.scientific)
 128     os.setf(ios::scientific);
 129   if (tc.showpos)
 130     os.setf(ios::showpos);
 131   if (tc.showpoint)
 132     os.setf(ios::showpoint);
 133   if (tc.uppercase)
 134     os.setf(ios::uppercase);
 135   if (tc.internal)
 136     os.setf(ios::internal);
 137   if (tc.left)
 138     os.setf(ios::left);
 139   if (tc.right)
 140     os.setf(ios::right);
 141 }
 142
 143 void
 144 test01()
 145 {
 146   for (std::size_t j = 0; j<sizeof(testcases)/sizeof(testcases[0]); j++)
 147     {
 148       _TestCase & tc = testcases[j];
 149 #ifdef TEST_NUMPUT_VERBOSE
 150       cout << "expect: " << tc.result << endl;
 151 #endif
 152       // test double with wchar_t type
 153       {
 154         testpunct<wchar_t>* __tp = new testpunct<wchar_t>(tc.decimal);
 155         wostringstream os;
 156         locale __loc(os.getloc(), __tp);
 157         os.imbue(__loc);
 158         apply_formatting(tc, os);
 159         os << tc.val;
 160         VERIFY( os && os.str() == tc.wresult );
 161       }
 162       // test long double with wchar_t type
 163       {
 164         testpunct<wchar_t>* __tp = new testpunct<wchar_t>(tc.decimal);
 165         wostringstream os;
 166         locale __loc(os.getloc(), __tp);
 167         os.imbue(__loc);
 168         apply_formatting(tc, os);
 169         os << (long double)tc.val;
 170         VERIFY( os && os.str() == tc.wresult );
 171       }
 172     }
 173 }
 174
 175 int
 176 main()
 177 {
 178   test01();
 179   return 0;
 180 }