libstdc++-v3/testsuite/26_numerics/cmath/fabs_inline.cc

   1 // Copyright (C) 1999, 2002 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 2, 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 COPYING.  If not, write to the Free
  16 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  17 // USA.
  18
  19 // Test to see whether the host provides its own (inline) view of fabs.
  20 // Origin: Kurt Garloff <kurt@garloff.de>, 2001-05-24
  21 // dg-do link
  22
  23 #include <cmath>
  24 #include <cstdio>
  25
  26 typedef double (*realfn) (double);
  27
  28 using std::fabs;
  29
  30 int main ()
  31 {
  32   double a = fabs (-2.4);
  33   realfn myfn = fabs;
  34   double b = myfn (-2.5);
  35   std::printf ("%f, %f, %p\n", a, b, myfn);
  36   return 0;
  37 }