libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/20_riemann_zeta/check_nan.cc

   1 // { dg-require-c-std "" }
   2 // { dg-add-options ieee }
   3
   4 // 2007-01-10  Edward Smith-Rowland <3dw4rd@verizon.net>
   5 //
   6 // Copyright (C) 2006-2023 Free Software Foundation, Inc.
   7 //
   8 // This file is part of the GNU ISO C++ Library.  This library is free
   9 // software; you can redistribute it and/or modify it under the
  10 // terms of the GNU General Public License as published by the
  11 // Free Software Foundation; either version 3, or (at your option)
  12 // any later version.
  13 //
  14 // This library is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 // GNU General Public License for more details.
  18 //
  19 // You should have received a copy of the GNU General Public License along
  20 // with this library; see the file COPYING3.  If not see
  21 // <http://www.gnu.org/licenses/>.
  22
  23 // 5.2.1.20 riemann_zeta
  24
  25 #include <tr1/cmath>
  26 #include <testsuite_hooks.h>
  27
  28 void
  29 test01()
  30 {
  31
  32   float xf = std::numeric_limits<float>::quiet_NaN();
  33   double xd = std::numeric_limits<double>::quiet_NaN();
  34   long double xl = std::numeric_limits<long double>::quiet_NaN();
  35
  36   float a = std::tr1::riemann_zeta(xf);
  37   float b = std::tr1::riemann_zetaf(xf);
  38   double c = std::tr1::riemann_zeta(xd);
  39   long double d = std::tr1::riemann_zeta(xl);
  40   long double e = std::tr1::riemann_zetal(xl);
  41
  42   VERIFY(std::tr1::isnan<float>(a));
  43   VERIFY(std::tr1::isnan<float>(b));
  44   VERIFY(std::tr1::isnan<double>(c));
  45   VERIFY(std::tr1::isnan<long double>(d));
  46   VERIFY(std::tr1::isnan<long double>(e));
  47
  48   return;
  49 }
  50
  51 int
  52 main()
  53 {
  54   test01();
  55   return 0;
  56 }
  57