libstdc++-v3/testsuite/27_io/ostream_inserter_arith.cc

   1 // 1999-11-15 Kevin Ediger  <kediger@licor.com>
   2 // test the floating point inserters (facet num_put)
   3
   4 // Copyright (C) 1999 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 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 #include <cstdio> // for sprintf
  23 #include <iostream>
  24 #include <iomanip>
  25 #include <locale>
  26 #include <sstream>
  27 #include <limits>
  28 #include <debug_assert.h>
  29
  30 using namespace std;
  31
  32 #ifndef DEBUG_ASSERT
  33 #  define TEST_NUMPUT_VERBOSE 1
  34 #endif
  35
  36 struct _TestCase
  37 {
  38   double val;
  39
  40   int precision;
  41   int width;
  42   char decimal;
  43   char fill;
  44
  45   bool fixed;
  46   bool scientific;
  47   bool showpos;
  48   bool showpoint;
  49   bool uppercase;
  50   bool internal;
  51   bool left;
  52   bool right;
  53
  54   const char* result;
  55 #if _GLIBCPP_USE_WCHAR_T
  56   const wchar_t* wresult;
  57 #endif
  58 };
  59
  60 static bool T=true;
  61 static bool F=false;
  62
  63 static _TestCase testcases[] =
  64 {
  65 #if _GLIBCPP_USE_WCHAR_T
  66   // standard output (no formatting applied)
  67   { 1.2, 6,0,'.',' ', F,F,F,F,F,F,F,F, "1.2",L"1.2" },
  68   { 54, 6,0,'.',' ', F,F,F,F,F,F,F,F, "54",L"54" },
  69   { -.012, 6,0,'.',' ', F,F,F,F,F,F,F,F, "-0.012",L"-0.012" },
  70   { -.00000012, 6,0,'.',' ', F,F,F,F,F,F,F,F, "-1.2e-07",L"-1.2e-07" },
  71
  72   // fixed formatting
  73   { 10.2345, 0,0,'.',' ', T,F,F,F,F,F,F,F, "10",L"10" },
  74   { 10.2345, 0,0,'.',' ', T,F,F,T,F,F,F,F, "10.",L"10." },
  75   { 10.2345, 1,0,'.',' ', T,F,F,F,F,F,F,F, "10.2",L"10.2" },
  76   { 10.2345, 4,0,'.',' ', T,F,F,F,F,F,F,F, "10.2345",L"10.2345" },
  77   { 10.2345, 6,0,'.',' ', T,F,T,F,F,F,F,F, "+10.234500",L"+10.234500" },
  78   { -10.2345, 6,0,'.',' ', T,F,F,F,F,F,F,F, "-10.234500",L"-10.234500" },
  79   { -10.2345, 6,0,',',' ', T,F,F,F,F,F,F,F, "-10,234500",L"-10,234500" },
  80
  81   // fixed formatting with width
  82   { 10.2345, 4,5,'.',' ', T,F,F,F,F,F,F,F, "10.2345",L"10.2345" },
  83   { 10.2345, 4,6,'.',' ', T,F,F,F,F,F,F,F, "10.2345",L"10.2345" },
  84   { 10.2345, 4,7,'.',' ', T,F,F,F,F,F,F,F, "10.2345",L"10.2345" },
  85   { 10.2345, 4,8,'.',' ', T,F,F,F,F,F,F,F, " 10.2345",L" 10.2345" },
  86   { 10.2345, 4,10,'.',' ', T,F,F,F,F,F,F,F, "   10.2345",L"   10.2345" },
  87   { 10.2345, 4,10,'.',' ', T,F,F,F,F,F,T,F, "10.2345   ",L"10.2345   " },
  88   { 10.2345, 4,10,'.',' ', T,F,F,F,F,F,F,T, "   10.2345",L"   10.2345" },
  89   { 10.2345, 4,10,'.',' ', T,F,F,F,F,T,F,F, "   10.2345",L"   10.2345" },
  90   { -10.2345, 4,10,'.',' ', T,F,F,F,F,T,F,F, "-  10.2345",L"-  10.2345" },
  91   { -10.2345, 4,10,'.','A', T,F,F,F,F,T,F,F, "-AA10.2345",L"-AA10.2345" },
  92   { 10.2345, 4,10,'.','#', T,F,T,F,F,T,F,F, "+##10.2345",L"+##10.2345" },
  93
  94   // scientific formatting
  95   { 1.23e+12, 1,0,'.',' ', F,T,F,F,F,F,F,F, "1.2e+12",L"1.2e+12" },
  96   { 1.23e+12, 1,0,'.',' ', F,T,F,F,T,F,F,F, "1.2E+12",L"1.2E+12" },
  97   { 1.23e+12, 2,0,'.',' ', F,T,F,F,F,F,F,F, "1.23e+12",L"1.23e+12" },
  98   { 1.23e+12, 3,0,'.',' ', F,T,F,F,F,F,F,F, "1.230e+12",L"1.230e+12" },
  99   { 1.23e+12, 3,0,'.',' ', F,T,T,F,F,F,F,F, "+1.230e+12",L"+1.230e+12" },
 100   { -1.23e-12, 3,0,'.',' ', F,T,F,F,F,F,F,F, "-1.230e-12",L"-1.230e-12" },
 101   { 1.23e+12, 3,0,',',' ', F,T,F,F,F,F,F,F, "1,230e+12",L"1,230e+12" },
 102 #else
 103   // standard output (no formatting applied)
 104   { 1.2, 6,0,'.',' ', F,F,F,F,F,F,F,F, "1.2" },
 105   { 54, 6,0,'.',' ', F,F,F,F,F,F,F,F, "54" },
 106   { -.012, 6,0,'.',' ', F,F,F,F,F,F,F,F, "-0.012" },
 107   { -.00000012, 6,0,'.',' ', F,F,F,F,F,F,F,F, "-1.2e-07" },
 108
 109   // fixed formatting
 110   { 10.2345, 0,0,'.',' ', T,F,F,F,F,F,F,F, "10" },
 111   { 10.2345, 0,0,'.',' ', T,F,F,T,F,F,F,F, "10." },
 112   { 10.2345, 1,0,'.',' ', T,F,F,F,F,F,F,F, "10.2" },
 113   { 10.2345, 4,0,'.',' ', T,F,F,F,F,F,F,F, "10.2345" },
 114   { 10.2345, 6,0,'.',' ', T,F,T,F,F,F,F,F, "+10.234500" },
 115   { -10.2345, 6,0,'.',' ', T,F,F,F,F,F,F,F, "-10.234500" },
 116   { -10.2345, 6,0,',',' ', T,F,F,F,F,F,F,F, "-10,234500" },
 117
 118   // fixed formatting with width
 119   { 10.2345, 4,5,'.',' ', T,F,F,F,F,F,F,F, "10.2345" },
 120   { 10.2345, 4,6,'.',' ', T,F,F,F,F,F,F,F, "10.2345" },
 121   { 10.2345, 4,7,'.',' ', T,F,F,F,F,F,F,F, "10.2345" },
 122   { 10.2345, 4,8,'.',' ', T,F,F,F,F,F,F,F, " 10.2345" },
 123   { 10.2345, 4,10,'.',' ', T,F,F,F,F,F,F,F, "   10.2345" },
 124   { 10.2345, 4,10,'.',' ', T,F,F,F,F,F,T,F, "10.2345   " },
 125   { 10.2345, 4,10,'.',' ', T,F,F,F,F,F,F,T, "   10.2345" },
 126   { 10.2345, 4,10,'.',' ', T,F,F,F,F,T,F,F, "   10.2345" },
 127   { -10.2345, 4,10,'.',' ', T,F,F,F,F,T,F,F, "-  10.2345" },
 128   { -10.2345, 4,10,'.','A', T,F,F,F,F,T,F,F, "-AA10.2345" },
 129   { 10.2345, 4,10,'.','#', T,F,T,F,F,T,F,F, "+##10.2345" },
 130
 131   // scientific formatting
 132   { 1.23e+12, 1,0,'.',' ', F,T,F,F,F,F,F,F, "1.2e+12" },
 133   { 1.23e+12, 1,0,'.',' ', F,T,F,F,T,F,F,F, "1.2E+12" },
 134   { 1.23e+12, 2,0,'.',' ', F,T,F,F,F,F,F,F, "1.23e+12" },
 135   { 1.23e+12, 3,0,'.',' ', F,T,F,F,F,F,F,F, "1.230e+12" },
 136   { 1.23e+12, 3,0,'.',' ', F,T,T,F,F,F,F,F, "+1.230e+12" },
 137   { -1.23e-12, 3,0,'.',' ', F,T,F,F,F,F,F,F, "-1.230e-12" },
 138   { 1.23e+12, 3,0,',',' ', F,T,F,F,F,F,F,F, "1,230e+12" },
 139 #endif
 140 };
 141
 142 template<typename _CharT>
 143 class testpunct : public numpunct<_CharT>
 144 {
 145 public:
 146   typedef _CharT  char_type;
 147   const char_type dchar;
 148
 149   explicit
 150   testpunct(char_type decimal_char) : numpunct<_CharT>(), dchar(decimal_char)
 151   { }
 152
 153 protected:
 154   char_type
 155   do_decimal_point() const
 156   { return dchar; }
 157
 158   char_type
 159   do_thousands_sep() const
 160   { return ','; }
 161
 162   string
 163   do_grouping() const
 164   { return string(); }
 165 };
 166
 167 template<typename _CharT>
 168 void apply_formatting(const _TestCase & tc, basic_ostream<_CharT> & os)
 169 {
 170   os.precision(tc.precision);
 171   os.width(tc.width);
 172   os.fill(static_cast<_CharT>(tc.fill));
 173   if (tc.fixed)
 174     os.setf(ios::fixed);
 175   if (tc.scientific)
 176     os.setf(ios::scientific);
 177   if (tc.showpos)
 178     os.setf(ios::showpos);
 179   if (tc.showpoint)
 180     os.setf(ios::showpoint);
 181   if (tc.uppercase)
 182     os.setf(ios::uppercase);
 183   if (tc.internal)
 184     os.setf(ios::internal);
 185   if (tc.left)
 186     os.setf(ios::left);
 187   if (tc.right)
 188     os.setf(ios::right);
 189 }
 190
 191 int
 192 test01()
 193 {
 194   bool test = true;
 195   for (int j=0; j<sizeof(testcases)/sizeof(testcases[0]); j++)
 196     {
 197       _TestCase & tc = testcases[j];
 198 #ifdef TEST_NUMPUT_VERBOSE
 199       cout << "expect: " << tc.result << endl;
 200 #endif
 201       // test double with char type
 202       {
 203         testpunct<char>* __tp = new testpunct<char>(tc.decimal);
 204         ostringstream os;
 205         locale __loc(os.getloc(), __tp);
 206         os.imbue(__loc);
 207         apply_formatting(tc, os);
 208         os << tc.val;
 209 #ifdef TEST_NUMPUT_VERBOSE
 210         cout << "result: " << os.str() << endl;
 211 #endif
 212         VERIFY( os && os.str() == tc.result );
 213       }
 214       // test long double with char type
 215       {
 216         testpunct<char>* __tp = new testpunct<char>(tc.decimal);
 217         ostringstream os;
 218         locale __loc(os.getloc(), __tp);
 219         os.imbue(__loc);
 220         apply_formatting(tc, os);
 221         os << (long double)tc.val;
 222 #ifdef TEST_NUMPUT_VERBOSE
 223         cout << "result: " << os.str() << endl;
 224 #endif
 225         VERIFY( os && os.str() == tc.result );
 226       }
 227 #if _GLIBCPP_USE_WCHAR_T
 228       // test double with wchar_t type
 229       {
 230         testpunct<wchar_t>* __tp = new testpunct<wchar_t>(tc.decimal);
 231         wostringstream os;
 232         locale __loc(os.getloc(), __tp);
 233         os.imbue(__loc);
 234         apply_formatting(tc, os);
 235         os << tc.val;
 236         VERIFY( os && os.str() == tc.wresult );
 237       }
 238       // test long double with wchar_t type
 239       {
 240         testpunct<wchar_t>* __tp = new testpunct<wchar_t>(tc.decimal);
 241         wostringstream os;
 242         locale __loc(os.getloc(), __tp);
 243         os.imbue(__loc);
 244         apply_formatting(tc, os);
 245         os << (long double)tc.val;
 246         VERIFY( os && os.str() == tc.wresult );
 247       }
 248 #endif
 249     }
 250
 251   return 0;
 252 }
 253
 254 int
 255 test02()
 256 {
 257   bool test = true;
 258   // make sure we can output a very long float
 259   long double val = 1.2345678901234567890123456789e+1000L;
 260   int prec = numeric_limits<long double>::digits10;
 261
 262   ostringstream os;
 263   os.precision(prec);
 264   os.setf(ios::scientific);
 265   os << val;
 266
 267   char largebuf[512];
 268   sprintf(largebuf, "%.*Le", prec, val);
 269 #ifdef TEST_NUMPUT_VERBOSE
 270   cout << "expect: " << largebuf << endl;
 271   cout << "result: " << os.str() << endl;
 272 #endif
 273   VERIFY(os && os.str() == largebuf);
 274
 275   return 0;
 276 }
 277
 278 int
 279 test03()
 280 {
 281   short s = -1;
 282   int i = -1;
 283   long l = -1;
 284   bool test = true;
 285
 286   const string str_blank;
 287   string str_tmp;
 288   stringbuf strbuf;
 289   ostream o(&strbuf);
 290
 291   o << oct << s << ' ' << hex << s;
 292   VERIFY( strbuf.str() == "177777 ffff" ); // Assuming 2byte-shorts
 293   strbuf.str(str_blank);
 294
 295   o << oct << i << ' ' << hex << i;
 296   VERIFY( strbuf.str() == "37777777777 ffffffff" );
 297   strbuf.str(str_blank);
 298
 299   o << oct << l << ' ' << hex << l;
 300   VERIFY( strbuf.str() == "37777777777 ffffffff" );
 301   strbuf.str(str_blank);
 302
 303   o << showpos << hex << showbase << 11;
 304   VERIFY( strbuf.str() == "0xb" );
 305
 306   VERIFY(test);
 307
 308   return 0;
 309 }
 310
 311 int
 312 main()
 313 {
 314   test01();
 315   test02();
 316 #ifdef TEST_NUMPUT_VERBOSE
 317   cout << "Test passed!" << endl;
 318 #endif
 319   return 0;
 320 }
 321
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