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

   1 // 1999-06-05
   2 // Gabriel Dos Reis <dosreis@cmla.ens-cachan.fr>
   3
   4 // Copyright (C) 2000, 1999 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 2, 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 COPYING.  If not, write to the Free
  19 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  20 // USA.
  21
  22 #include <cmath>
  23 #include <debug_assert.h>
  24
  25 // test compilation.
  26 int
  27 test01()
  28 {
  29   float a = 1.f;
  30   float b;
  31   std::modf(a, &b);
  32   return 0;
  33 }
  34
  35 // need more extravagant checks than this, of course, but this used to core...
  36 int
  37 test02()
  38 {
  39         std::sin(static_cast<float>(0));
  40   return 0;
  41 }
  42
  43 // as did this.
  44 int
  45 test03()
  46 {
  47   double powtest = std::pow(2., 0);
  48   return 0;
  49 }
  50
  51 // this used to abort.
  52 int
  53 test04()
  54 {
  55   bool test = true;
  56   float x[2] = {1, 2};
  57   float y = 3.4;
  58   std::modf(y, &x[0]);
  59   VERIFY(x[1] == 2);
  60   return 0;
  61 }
  62
  63 int
  64 main()
  65 {
  66   test01();
  67   test02();
  68   test03();
  69   test04();
  70   return 0;
  71 }