libstdc++-v3/testsuite/decimal/ctor.cc

   1 // Copyright (C) 2009-2021 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 // { dg-options "-Wno-pedantic" }
  20
  21 // ISO/IEC TR 24733  3.2.2.1  Construct/copy/destroy (decimal32).
  22 // ISO/IEC TR 24733  3.2.3.1  Construct/copy/destroy (decimal64).
  23 // ISO/IEC TR 24733  3.2.4.1  Construct/copy/destroy (decimal128).
  24
  25 // Test the default constructor.
  26
  27 #include <decimal/decimal>
  28 #include <cstring>
  29 #include <testsuite_hooks.h>
  30
  31 using namespace std::decimal;
  32
  33 void
  34 ctor_32 (void)
  35 {
  36   decimal32 a;
  37   float b __attribute__((mode(SD))) = 0.e-101DF;
  38
  39   VERIFY (std::memcmp (&a, &b, 4) == 0);
  40 }
  41
  42 void
  43 ctor_64 (void)
  44 {
  45   decimal64 a;
  46   float b __attribute__((mode(DD))) = 0.e-398DD;
  47
  48   VERIFY (std::memcmp (&a, &b, 8) == 0);
  49 }
  50
  51 void
  52 ctor_128 (void)
  53 {
  54   decimal128 a;
  55   float b __attribute__((mode(TD))) = 0.e-6176DL;
  56
  57   VERIFY (std::memcmp (&a, &b, 16) == 0);
  58 }
  59
  60 int
  61 main ()
  62 {
  63   ctor_32 ();
  64   ctor_64 ();
  65   ctor_128 ();
  66 }