libstdc++-v3/testsuite/26_numerics/headers/cmath/c_math.cc

   1 // 1999-06-05
   2 // Gabriel Dos Reis <dosreis@cmla.ens-cachan.fr>
   3
   4 // Copyright (C) 1999-2018 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <cmath>
  22 #include <testsuite_hooks.h>
  23
  24 // test compilation.
  25 int
  26 test01()
  27 {
  28   float a = 1.f;
  29   float b;
  30   std::modf(a, &b);
  31   return 0;
  32 }
  33
  34 // need more extravagant checks than this, of course, but this used to core...
  35 int
  36 test02()
  37 {
  38   std::sin(static_cast<float>(0));
  39   return 0;
  40 }
  41
  42 // as did this.
  43 int
  44 test03()
  45 {
  46   double powtest __attribute__((unused)) = std::pow(2., 0);
  47   return 0;
  48 }
  49
  50 // this used to abort.
  51 int
  52 test04()
  53 {
  54   float x[2] = {1, 2};
  55   float y = 3.4;
  56   std::modf(y, &x[0]);
  57   VERIFY(x[1] == 2);
  58   return 0;
  59 }
  60
  61 int
  62 main()
  63 {
  64   test01();
  65   test02();
  66   test03();
  67   test04();
  68   return 0;
  69 }