libstdc++-v3/testsuite/decimal/pr54036-2.cc

   1 // Copyright (C) 2012-2017 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 decimal64
  26 __attribute__ ((noinline))
  27 my_nan64 (void)
  28 {
  29   decimal64 z = 0;
  30   decimal64 v = z/z;
  31   return v;
  32 }
  33
  34 decimal64
  35 __attribute__ ((noinline))
  36 my_inf64 (void)
  37 {
  38   decimal64 o = 1;
  39   decimal64 z = 0;
  40   decimal64 v = o/z;
  41   return v;
  42 }
  43
  44 int
  45 main ()
  46 {
  47   decimal64 v;
  48
  49   v = my_nan64 ();
  50
  51   VERIFY (__builtin_isnand64 (v.__getval ()));
  52   VERIFY (!__builtin_signbitd64 (v.__getval ()));
  53
  54   v = -v;
  55
  56   VERIFY (__builtin_isnand64 (v.__getval ()));
  57   VERIFY (__builtin_signbitd64 (v.__getval ()));
  58
  59   v = my_inf64 ();
  60
  61   VERIFY (__builtin_isinfd64 (v.__getval ()));
  62   VERIFY (!__builtin_signbitd64 (v.__getval ()));
  63
  64   v = -v;
  65
  66   VERIFY (__builtin_isinfd64 (v.__getval ()));
  67   VERIFY (__builtin_signbitd64 (v.__getval ()));
  68
  69   return 0;
  70 }