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

   1 // 1999-04-12 bkoz
   2
   3 // Copyright (C) 1999, 2000 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 2, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // 27.6.1.2.2 arithmetic extractors
  22
  23 #include <cstdio> // for printf
  24 #include <istream>
  25 #include <ostream>
  26 #include <sstream>
  27 #include <locale>
  28 #include <debug_assert.h>
  29
  30 std::string str_01;
  31 std::string str_02("true false 0 1 110001");
  32 std::string str_03("-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5");
  33 std::string str_04("0123");
  34
  35 std::stringbuf isbuf_01(std::ios_base::in);
  36 std::stringbuf isbuf_02(str_02, std::ios_base::in);
  37 std::stringbuf isbuf_03(str_03, std::ios_base::in);
  38 std::stringbuf isbuf_04(str_04, std::ios_base::in);
  39
  40 std::istream is_01(NULL);
  41 std::istream is_02(&isbuf_02);
  42 std::istream is_03(&isbuf_03);
  43 std::istream is_04(&isbuf_04);
  44 std::stringstream ss_01(str_01);
  45
  46 // minimal sanity check
  47 bool test01() {
  48
  49   bool test = true;
  50
  51   // Integral Types:
  52   bool                  b1  = false;
  53   bool                  b2  = false;
  54   short                 s1  = 0;
  55   int                   i1  = 0;
  56   long                  l1  = 0;
  57   unsigned short        us1 = 0;
  58   unsigned int          ui1 = 0;
  59   unsigned long         ul1 = 0;
  60
  61   // Floating-point Types:
  62   float                 f1  = 0;
  63   double                d1  = 0;
  64   long double           ld1 = 0;
  65
  66   // process alphanumeric versions of bool values
  67   std::ios_base::fmtflags fmt = is_02.flags();
  68   bool testfmt = fmt & std::ios_base::boolalpha;
  69   is_02.setf(std::ios_base::boolalpha);
  70   fmt = is_02.flags();
  71   testfmt = fmt & std::ios_base::boolalpha;
  72   is_02 >> b1;
  73   VERIFY( b1 == 1 );
  74   is_02 >> b1;
  75   VERIFY( b1 == 0 );
  76
  77   // process numeric versions of of bool values
  78   is_02.unsetf(std::ios_base::boolalpha);
  79   fmt = is_02.flags();
  80   testfmt = fmt & std::ios_base::boolalpha;
  81   is_02 >> b1;
  82   VERIFY( b1 == 0 );
  83   is_02 >> b1;
  84   VERIFY( b1 == 1 );
  85
  86   // is_03 == "-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5"
  87   is_03 >> l1;
  88   VERIFY( l1 == -19999999 );
  89   is_03 >> ul1;
  90   VERIFY( ul1 == 777777 );
  91   is_03 >> i1;
  92   VERIFY( i1 == -234234 );
  93   is_03 >> ui1;
  94   VERIFY( ui1 == 233 );
  95   is_03 >> s1;
  96   VERIFY( s1 == -234 );
  97   is_03 >> us1;
  98   VERIFY( us1 == 33 );
  99   is_03 >> b1;
 100   VERIFY( b1 == 1 );
 101   is_03 >> ld1;
 102   VERIFY( ld1 == 66300.25 );
 103   is_03 >> d1;
 104   VERIFY( d1 == .315 );
 105   is_03 >> f1;
 106   VERIFY( f1 == 1.5 );
 107
 108   is_04 >> std::hex >> i1;
 109   std::printf ("%d %d %d\n", i1, i1 == 0x123, test);
 110   VERIFY( i1 == 0x123 );
 111   std::printf ("%d %d %d\n", i1, i1 == 0x123, test);
 112
 113   // test void pointers
 114   int i = 55;
 115   void* po = &i;
 116   void* pi;
 117
 118   ss_01 << po;
 119   ss_01 >> pi;
 120   std::printf ("%x %x\n", pi, po);
 121   VERIFY( po == pi );
 122
 123 #ifdef DEBUG_ASSERT
 124   assert(test);
 125 #endif
 126
 127   return test;
 128 }
 129
 130 // elaborated test for ints
 131 bool test02() {
 132
 133   bool test = true;
 134   const std::string str_01("20000AB");
 135   std::stringbuf strb_01(str_01, std::ios_base::in);
 136   std::istream is(&strb_01);
 137
 138   int n = 15;
 139   is >> n;
 140   VERIFY( n == 20000 );
 141   char c = is.peek();
 142   VERIFY( c == 65 );
 143
 144 #ifdef DEBUG_ASSERT
 145   assert(test);
 146 #endif
 147
 148   return test;
 149 }
 150
 151 bool test03()
 152 {
 153   std::stringbuf sbuf;
 154   std::istream istr(&sbuf);
 155   std::ostream ostr(&sbuf);
 156
 157   bool test = true;
 158   long l01;
 159   ostr <<  "12220101";
 160   istr >>  l01; // _M_in_end set completely incorrectly here.
 161   VERIFY( l01 == 12220101 );
 162   VERIFY( istr.rdstate() == std::ios_base::eofbit );
 163
 164 #ifdef DEBUG_ASSERT
 165   assert(test);
 166 #endif
 167
 168   return test;
 169 }
 170
 171 // http://sourceware.cygnus.com/ml/libstdc++/2000-q1/msg00081.html
 172 // Jim Parsons
 173 void test06()
 174 {
 175   // default locale, grouping is turned off
 176   bool test = true;
 177   unsigned int h4, h3, h2;
 178   char c;
 179   std::string s("205,199,144");
 180   std::istringstream is(s);
 181
 182   is >> h4; // 205
 183   VERIFY( h4 == 205 );
 184   is >> c; // ','
 185   VERIFY( c == ',' );
 186
 187   is >> h4; // 199
 188   VERIFY( h4 == 199 );
 189   is >> c; // ','
 190   VERIFY( c == ',' );
 191
 192   is >> h4; // 144
 193   VERIFY( is.rdstate() == std::ios_base::eofbit );
 194   VERIFY( h4 == 144 );
 195   is >> c; // EOF
 196   VERIFY( c == ',' );
 197   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
 198
 199 #ifdef DEBUG_ASSERT
 200   assert(test);
 201 #endif
 202 }
 203
 204 namespace std {
 205   class test_numpunct1 : public numpunct<char>
 206   {
 207   protected:
 208     string
 209     do_grouping() const
 210     { return string(1, '\003'); }
 211   };
 212 } // namespace std
 213
 214 void test07()
 215 {
 216   // manufactured locale, grouping is turned on
 217   bool test = true;
 218   unsigned int h4 = 0, h3 = 0, h2 = 0;
 219   float f1 = 0.0;
 220   const std::string s1("205,199 23,445.25 1,024,365 123,22,24");
 221   std::istringstream is(s1);
 222   is.imbue(std::locale(std::locale(), new std::test_numpunct1));
 223
 224   // Basic operation.
 225   is >> h4;
 226   VERIFY( h4 == 205199 );
 227   VERIFY( is.good() );
 228
 229   is.clear();
 230   is >> f1;
 231   VERIFY( f1 == 23445.25 );
 232   VERIFY( is.good() );
 233
 234   is.clear();
 235   is >> h3;
 236   VERIFY( h3 == 1024365 );
 237   VERIFY( is.good() );
 238
 239   is.clear();
 240   is >> h2;
 241   VERIFY( h2 == 0 );
 242   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
 243   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::eofbit) );
 244
 245   // Stress tests for explicit errors in grouping corner cases.  The
 246   // validity of these tests and results have been hammered out in
 247   // private email between bkoz and ncm between Jan 25 and Jan 27, 2000.
 248   // Thanks nate -- benjamin
 249   const std::string s2(",111 4,,4 0.25,345 5..25 156,, 1,000000 1000000 1234,567");
 250   h3 = h4 = h2 = 0;
 251   f1 = 0.0;
 252   const char c_control = '?';
 253   char c = c_control;
 254   is.clear();
 255   is.str(s2);
 256
 257   is >> h4;
 258   VERIFY( h4 == 0 );
 259   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
 260   is.clear();
 261   is >> c;
 262   VERIFY( c == ',' );
 263   VERIFY( is.good() );
 264
 265   is.ignore(3);
 266   is >> f1;
 267   VERIFY( f1 == 0.0 );
 268   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
 269   is.clear();
 270   is >> c;
 271   VERIFY( c == ',' );
 272   is >> c;
 273   VERIFY( c == '4' );
 274   VERIFY( is.good() );
 275
 276   is >> f1;
 277   VERIFY( f1 == 0.25 );
 278   VERIFY( is.good() );
 279   is >> c;
 280   VERIFY( c == ',' );
 281   is >> h2;
 282   VERIFY( h2 == 345 );
 283   VERIFY( is.good() );
 284   f1 = 0.0;
 285   h2 = 0;
 286
 287   is >> f1;
 288   VERIFY( f1 == 5.0 );
 289   VERIFY( is.good() );
 290   is >> f1;
 291   VERIFY( f1 == .25 );
 292   VERIFY( is.good() );
 293
 294   is >> h3;
 295   VERIFY( h3 == 0 );
 296   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
 297   is.clear();
 298   is >> c;
 299   VERIFY( c == ',' ); // second one
 300   VERIFY( is.good() );
 301
 302   is >> h2;
 303   VERIFY( h2 == 0 );
 304   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
 305   is.clear();
 306
 307   is >> h2;
 308   VERIFY( h2 == 1000000 );
 309   VERIFY( is.good() );
 310   h2 = 0;
 311
 312   is >> h2;
 313   VERIFY( h2 == 0 );
 314   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
 315   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::eofbit) );
 316   is.clear();
 317
 318 #ifdef DEBUG_ASSERT
 319   assert(test);
 320 #endif
 321 }
 322
 323 namespace std {
 324   class test_numpunct2 : public numpunct<char>
 325   {
 326   protected:
 327     string
 328     do_grouping() const
 329     { return string("\002\003"); }
 330   };
 331 } // namespace std
 332
 333 void test08()
 334 {
 335   // manufactured locale, grouping is turned on
 336   bool test = true;
 337   unsigned int h4 = 0, h3 = 0, h2 = 0;
 338   float f1 = 0.0;
 339   const std::string s1("1,22 205,19 22,123,22");
 340   const std::string s2("1,220 2050,19 202,123,22");
 341
 342   std::istringstream is(s1);
 343   is.imbue(std::locale(std::locale(), new std::test_numpunct2));
 344
 345   // Basic operation.
 346   is >> h4;
 347   VERIFY( h4 == 122 );
 348   VERIFY( is.good() );
 349
 350   is.clear();
 351   is >> h3;
 352   VERIFY( h3 == 20519 );
 353   VERIFY( is.good() );
 354
 355   is.clear();
 356   is >> h2;
 357   VERIFY( h2 == 2212322 );
 358   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::eofbit) );
 359
 360
 361 #ifdef DEBUG_ASSERT
 362   assert(test);
 363 #endif
 364 }
 365
 366
 367 bool test09()
 368 {
 369    bool test = true;
 370
 371    std::string st("2.456e3-+0.567e-2");
 372    std::stringbuf sb(st);
 373    std::istream is(&sb);
 374    double f1 = 0, f2 = 0;
 375    char c;
 376    (is>>std::ws) >> f1;
 377    (is>>std::ws) >> c;
 378    (is>>std::ws) >> f2;
 379    test = f1 == 2456;
 380    VERIFY( f2 == 0.00567 );
 381    VERIFY( c == '-' );
 382 #ifdef DEBUG_ASSERT
 383   assert(test);
 384 #endif
 385
 386   return test;
 387 }
 388
 389 bool test10() {
 390   std::string str_01("0 00 000 +0 +  0 -   0");
 391   std::stringbuf isbuf_01(str_01);
 392   std::istream is_01(&isbuf_01);
 393
 394   bool test = true;
 395
 396   int n = 365;
 397   is_01 >> n;
 398   VERIFY( n == 0 );
 399   n = 364;
 400   is_01 >> n;
 401   VERIFY( n == 0 );
 402   n = 363;
 403   is_01 >> n;
 404   VERIFY( n == 0 );
 405   n = 362;
 406   is_01 >> n;
 407   VERIFY( n == 0 );
 408   n = 361;
 409   is_01 >> n;
 410   VERIFY( n == 0 );
 411   n = 360;
 412   is_01 >> n;
 413   VERIFY( n == 0 );
 414   VERIFY( is_01.rdstate() == std::ios_base::eofbit );
 415
 416   std::string str_02("0x32 0X33 033 33");
 417   std::stringbuf isbuf_02(str_02);
 418   std::istream is_02(&isbuf_02);
 419   is_02.unsetf(std::ios_base::basefield);
 420   is_02 >> n;
 421   VERIFY( n == 50 );
 422   is_02 >> n;
 423   VERIFY( n == 51 );
 424   is_02 >> n;
 425   VERIFY( n == 27 );
 426   is_02 >> n;
 427   VERIFY( n == 33 );
 428   VERIFY( is_02.rdstate() == std::ios_base::eofbit );
 429
 430   std::stringbuf isbuf_03(str_02);
 431   std::istream is_03(&isbuf_03);
 432   char c;
 433   int m;
 434
 435   is_03 >> std::dec >> n >> c >> m;
 436   VERIFY( n == 0 );
 437   VERIFY( c == 'x' );
 438   VERIFY( m == 32 );
 439
 440   is_03 >> std::oct >> m >> c >> n;
 441   VERIFY( m == 0 );
 442   VERIFY( c == 'X' );
 443   VERIFY( n == 27 );
 444
 445   is_03 >> std::dec >> m >> n;
 446   VERIFY( m == 33 );
 447   VERIFY( n == 33 );
 448   VERIFY( is_03.rdstate() == std::ios_base::eofbit );
 449
 450   std::string str_04("3. 4.5E+  2a5E-3 .6E1");
 451   std::stringbuf isbuf_04(str_04);
 452   std::istream is_04(&isbuf_04);
 453
 454   double f;
 455   is_04 >> f;
 456   VERIFY( f == 3.0 );
 457   is_04 >> f;
 458   VERIFY( f == 450.0 );
 459   is_04.ignore();
 460   is_04 >> f;
 461   VERIFY( f == 0.005 );
 462   is_04 >> f;
 463   VERIFY( f == 6 );
 464   VERIFY( is_03.rdstate() == std::ios_base::eofbit );
 465
 466   std::string str_05("0E20 5Ea E16");
 467   std::stringbuf isbuf_05(str_05);
 468   std::istream is_05(&isbuf_05);
 469
 470   is_05 >> f;
 471   VERIFY( f == 0 );
 472   is_05 >> f;
 473   VERIFY( f == 0 );
 474   VERIFY( is_05.rdstate() == std::ios_base::failbit );
 475   is_05.clear();
 476   is_05 >> c;
 477   VERIFY( c == 'a' );
 478   is_05 >> f;
 479   VERIFY( f == 0 );
 480   VERIFY( is_05.rdstate() == std::ios_base::failbit );
 481   is_05.clear();
 482   is_05.ignore();
 483   is_05 >> n;
 484   VERIFY( n == 16 );
 485
 486 #ifdef DEBUG_ASSERT
 487   assert(test);
 488 #endif
 489
 490   return test;
 491 }
 492
 493 int main()
 494 {
 495   test01();
 496   test02();
 497   test03();
 498
 499   test06();
 500   test07();
 501   test08();
 502   test09();
 503   test10();
 504   return 0;
 505 }
 506
 507
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 509
 510
 511 // paul miller was right on with riddim warfare!
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