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

   1 // Inspired by libstdc++/7680 & 26_numerics/c_math.cc, 2003-04-12 ljr
   2
   3 // Copyright (C) 2003-2018 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20
  21 // { dg-do link }
  22 // { dg-options "-D_XOPEN_SOURCE" { target *-*-freebsd* *-*-dragonfly* } }
  23
  24 #include <cmath>
  25
  26 int
  27 test01()
  28 {
  29   float a = 1.f;
  30   float b;
  31   std::modf(a, &b);
  32   return 0;
  33 }
  34
  35 int
  36 test02 ()
  37 {
  38   float a = 0.0f;
  39   float b __attribute__((unused)) = std::acos(a);
  40   return 0;
  41 }
  42
  43 int
  44 main()
  45 {
  46   test01();
  47   test02();
  48   return 0;
  49 }