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

   1 // Inspired by libstdc++/7680 & 26_numerics/c_math.cc, 2003-04-12 ljr
   2
   3 // Copyright (C) 2003 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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // As a special exception, you may use this file as part of a free software
  22 // library without restriction.  Specifically, if other files instantiate
  23 // templates or use macros or inline functions from this file, or you compile
  24 // this file and link it with other files to produce an executable, this
  25 // file does not by itself cause the resulting executable to be covered by
  26 // the GNU General Public License.  This exception does not however
  27 // invalidate any other reasons why the executable file might be covered by
  28 // the GNU General Public License.
  29
  30 // { dg-do link }
  31 // { dg-options "-D_XOPEN_SOURCE" { target *-*-freebsd* } }
  32
  33 #include <cmath>
  34
  35 int
  36 test01()
  37 {
  38   float a = 1.f;
  39   float b;
  40   std::modf(a, &b);
  41   return 0;
  42 }
  43
  44 int
  45 test02 ()
  46 {
  47   float a = 0.0f;
  48   float b __attribute__((unused)) = std::acos(a);
  49   return 0;
  50 }
  51
  52 int
  53 main()
  54 {
  55   test01();
  56   test02();
  57   return 0;
  58 }