libstdc++-v3/testsuite/decimal/pr54036-3.cc

   1 // Copyright (C) 2012-2014 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 #include <decimal/decimal>
  21 #include <testsuite_hooks.h>
  22
  23 using namespace std::decimal;
  24
  25 decimal128
  26 __attribute__ ((noinline))
  27 my_nan128 (void)
  28 {
  29   decimal128 z = 0;
  30   decimal128 v = z/z;
  31   return v;
  32 }
  33
  34 decimal128
  35 __attribute__ ((noinline))
  36 my_inf128 (void)
  37 {
  38   decimal128 o = 1;
  39   decimal128 z = 0;
  40   decimal128 v = o/z;
  41   return v;
  42 }
  43
  44 int
  45 main ()
  46 {
  47   bool test __attribute__((unused)) = true;
  48   decimal128 v;
  49
  50   v = my_nan128 ();
  51
  52   VERIFY (__builtin_isnand128 (v.__getval ()));
  53   VERIFY (!__builtin_signbitd128 (v.__getval ()));
  54
  55   v = -v;
  56
  57   VERIFY (__builtin_isnand128 (v.__getval ()));
  58   VERIFY (__builtin_signbitd128 (v.__getval ()));
  59
  60   v = my_inf128 ();
  61
  62   VERIFY (__builtin_isinfd128 (v.__getval ()));
  63   VERIFY (!__builtin_signbitd128 (v.__getval ()));
  64
  65   v = -v;
  66
  67   VERIFY (__builtin_isinfd128 (v.__getval ()));
  68   VERIFY (__builtin_signbitd128 (v.__getval ()));
  69
  70   return 0;
  71 }