libstdc++-v3/testsuite/decimal/incdec-memfunc.cc

   1 // Copyright (C) 2009-2016 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-require-effective-target dfp }
  19
  20 // ISO/IEC TR 24733  3.2.2.5  Increment and decrement operators (decimal32).
  21 // ISO/IEC TR 24733  3.2.3.5  Increment and decrement operators (decimal64).
  22 // ISO/IEC TR 24733  3.2.4.5  Increment and decrement operators (decimal128).
  23
  24 // Access member functions directly.
  25
  26 #include <decimal/decimal>
  27 #include <testsuite_hooks.h>
  28
  29 // Use extension to replace implicit long long conversion with function call.
  30 #define LONGLONG(X) decimal_to_long_long(X)
  31
  32 using namespace std::decimal;
  33
  34 void
  35 incdec32 (void)
  36 {
  37   bool test __attribute__((unused)) = true;
  38   int ival;
  39   decimal32 a(11), b, c;
  40
  41   // Verify that we get the expected value of b after assignment.
  42   b = a;
  43   ival = LONGLONG (b); VERIFY (ival == 11);
  44
  45   // Check that the increment and decrement operators change the value
  46   // of the original class.
  47   b = a;
  48   b.operator++();
  49   ival = LONGLONG (b); VERIFY (ival == 12);
  50
  51   b = a;
  52   b.operator++(1);
  53   ival = LONGLONG (b); VERIFY (ival == 12);
  54
  55   b = a;
  56   b.operator--();
  57   ival = LONGLONG (b); VERIFY (ival == 10);
  58
  59   b = a;
  60   b.operator--(1);
  61   ival = LONGLONG (b); VERIFY (ival == 10);
  62
  63   // Check that the increment and decrement operators return the
  64   // correct value.
  65   b = a;
  66   c = b.operator++();
  67   ival = LONGLONG (c); VERIFY (ival == 12);
  68
  69   b = a;
  70   c = b.operator++(1);
  71   ival = LONGLONG (c); VERIFY (ival == 11);
  72
  73   b = a;
  74   c = b.operator--();
  75   ival = LONGLONG (c); VERIFY (ival == 10);
  76
  77   b = a;
  78   c = b.operator--(1);
  79   ival = LONGLONG (c); VERIFY (ival == 11);
  80 }
  81
  82 void
  83 incdec64 (void)
  84 {
  85   bool test __attribute__((unused)) = true;
  86   int ival;
  87   decimal64 a(11), b, c;
  88
  89   // Verify that we get the expected value of b after assignment.
  90   b = a;
  91   ival = LONGLONG (b); VERIFY (ival == 11);
  92
  93   // Check that the increment and decrement operators change the value
  94   // of the original class.
  95   b = a;
  96   b.operator++();
  97   ival = LONGLONG (b); VERIFY (ival == 12);
  98
  99   b = a;
 100   b.operator++(1);
 101   ival = LONGLONG (b); VERIFY (ival == 12);
 102
 103   b = a;
 104   b.operator--();
 105   ival = LONGLONG (b); VERIFY (ival == 10);
 106
 107   b = a;
 108   b.operator--(1);
 109   ival = LONGLONG (b); VERIFY (ival == 10);
 110
 111   // Check that the increment and decrement operators return the
 112   // correct value.
 113   b = a;
 114   c = b.operator++();
 115   ival = LONGLONG (c); VERIFY (ival == 12);
 116
 117   b = a;
 118   c = b.operator++(1);
 119   ival = LONGLONG (c); VERIFY (ival == 11);
 120
 121   b = a;
 122   c = b.operator--();
 123   ival = LONGLONG (c); VERIFY (ival == 10);
 124
 125   b = a;
 126   c = b.operator--(1);
 127   ival = LONGLONG (c); VERIFY (ival == 11);
 128 }
 129
 130 void
 131 incdec128 (void)
 132 {
 133   bool test __attribute__((unused)) = true;
 134   int ival;
 135   decimal128 a(11), b, c;
 136
 137   // Verify that we get the expected value of b after assignment.
 138   b = a;
 139   ival = LONGLONG (b); VERIFY (ival == 11);
 140
 141   // Check that the increment and decrement operators change the value
 142   // of the original class.
 143   b = a;
 144   b.operator++();
 145   ival = LONGLONG (b); VERIFY (ival == 12);
 146
 147   b = a;
 148   b.operator++(1);
 149   ival = LONGLONG (b); VERIFY (ival == 12);
 150
 151   b = a;
 152   b.operator--();
 153   ival = LONGLONG (b); VERIFY (ival == 10);
 154
 155   b = a;
 156   b.operator--(1);
 157   ival = LONGLONG (b); VERIFY (ival == 10);
 158
 159   // Check that the increment and decrement operators return the
 160   // correct value.
 161   b = a;
 162   c = b.operator++();
 163   ival = LONGLONG (c); VERIFY (ival == 12);
 164
 165   b = a;
 166   c = b.operator++(1);
 167   ival = LONGLONG (c); VERIFY (ival == 11);
 168
 169   b = a;
 170   c = b.operator--();
 171   ival = LONGLONG (c); VERIFY (ival == 10);
 172
 173   b = a;
 174   c = b.operator--(1);
 175   ival = LONGLONG (c); VERIFY (ival == 11);
 176 }
 177
 178 int
 179 main ()
 180 {
 181   incdec32 ();
 182   incdec64 ();
 183   incdec128 ();
 184 }