Subversion Repositories openrisc_2011-10-31

// 2007-02-04  Edward Smith-Rowland <3dw4rd@verizon.net>

//

// Copyright (C) 2007, 2009 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 3, or (at your option)

// any later version.

//

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING3.  If not see

// <http://www.gnu.org/licenses/>.

//  riemann_zeta

// This can take long on simulators, timing out the test. Also change on

// OpenRISC linux, since this may be a remotely simulated target.

// { dg-options "-DMAX_ITERATIONS=5" { target simulator } }

// { dg-options "-DMAX_ITERATIONS=5" { target or32-*-linux } }

#ifndef MAX_ITERATIONS

#define MAX_ITERATIONS (sizeof(data001) / sizeof(testcase_riemann_zeta<double>))

#endif

//  Compare against values generated by the GNU Scientific Library.

//  The GSL can be found on the web: http://www.gnu.org/software/gsl/

#include <tr1/cmath>

#if defined(__TEST_DEBUG)

#include <iostream>

#define VERIFY(A) \

if (!(A)) \

  { \

    std::cout << "line " << __LINE__ \

      << "  max_abs_frac = " << max_abs_frac \

      << std::endl; \

  }

#else

#include <testsuite_hooks.h>

#endif

#include "../testcase.h"

// Test data.

testcase_riemann_zeta<double> data001[] = {

  { 0.0000000000000000, -10.000000000000000 },

  { -0.0033669820451019579, -9.8000000000000007 },

  { -0.0058129517767319039, -9.5999999999999996 },

  { -0.0072908732290557004, -9.4000000000000004 },

  { -0.0078420910654484442, -9.1999999999999993 },

  { -0.0075757575757575803, -9.0000000000000000 },

  { -0.0066476555677551898, -8.8000000000000007 },

  { -0.0052400095350859429, -8.5999999999999996 },

  { -0.0035434308017674959, -8.4000000000000004 },

  { -0.0017417330388368585, -8.1999999999999993 },

  { 0.0000000000000000, -8.0000000000000000 },

  { 0.0015440036789213965, -7.7999999999999998 },

  { 0.0027852131086497423, -7.5999999999999996 },

  { 0.0036537321227995880, -7.4000000000000004 },

  { 0.0041147930817053468, -7.2000000000000002 },

  { 0.0041666666666666683, -7.0000000000000000 },

  { 0.0038369975032738366, -6.7999999999999998 },

  { 0.0031780270571782981, -6.5999999999999996 },

  { 0.0022611282027338573, -6.4000000000000004 },

  { 0.0011710237049390511, -6.2000000000000002 },

  { 0.0000000000000000, -6.0000000000000000 },

  { -0.0011576366649881879, -5.7999999999999998 },

  { -0.0022106784318564345, -5.5999999999999996 },

  { -0.0030755853460586891, -5.4000000000000004 },

  { -0.0036804380477934787, -5.2000000000000002 },

  { -0.0039682539682539698, -5.0000000000000000 },

  { -0.0038996891301999797, -4.7999999999999998 },

  { -0.0034551830834302711, -4.5999999999999996 },

  { -0.0026366345018725115, -4.4000000000000004 },

  { -0.0014687209305056974, -4.2000000000000002 },

  { 0.0000000000000000, -4.0000000000000000 },

  { 0.0016960463875825209, -3.7999999999999998 },

  { 0.0035198355903356747, -3.5999999999999996 },

  { 0.0053441503206513421, -3.4000000000000004 },

  { 0.0070119720770910540, -3.2000000000000002 },

  { 0.0083333333333333350, -3.0000000000000000 },

  { 0.0090807294856852811, -2.7999999999999998 },

  { 0.0089824623788396681, -2.5999999999999996 },

  { 0.0077130239874243630, -2.4000000000000004 },

  { 0.0048792123593036068, -2.2000000000000002 },

  { 0.0000000000000000, -2.0000000000000000 },

  { -0.0075229347765968010, -1.8000000000000007 },

  { -0.018448986678963775, -1.5999999999999996 },

  { -0.033764987694047593, -1.4000000000000004 },

  { -0.054788441243880631, -1.1999999999999993 },

  { -0.083333333333333398, -1.0000000000000000 },

  { -0.12198707766977103, -0.80000000000000071 },

  { -0.17459571193801401, -0.59999999999999964 },

  { -0.24716546083171492, -0.40000000000000036 },

  { -0.34966628059831484, -0.19999999999999929 },

  { -0.49999999999999994, 0.0000000000000000 },

  { -0.73392092489633953, 0.19999999999999929 },

  { -1.1347977838669825, 0.40000000000000036 },

  { -1.9526614482239983, 0.59999999999999964 },

  { -4.4375384158955677, 0.80000000000000071 },

};

// Test function.

template <typename Tp>

void test001()

{

  const Tp eps = std::numeric_limits<Tp>::epsilon();

  Tp max_abs_diff = -Tp(1);

  Tp max_abs_frac = -Tp(1);

  unsigned int num_datum = MAX_ITERATIONS;

  for (unsigned int i = 0; i < num_datum; ++i)

    {

      const Tp f = std::tr1::riemann_zeta(Tp(data001[i].x));

      const Tp f0 = data001[i].f0;

      const Tp diff = f - f0;

      if (std::abs(diff) > max_abs_diff)

        max_abs_diff = std::abs(diff);

      if (std::abs(f0) > Tp(10) * eps

       && std::abs(f) > Tp(10) * eps)

        {

          const Tp frac = diff / f0;

          if (std::abs(frac) > max_abs_frac)

            max_abs_frac = std::abs(frac);

        }

    }

  VERIFY(max_abs_frac < Tp(5.0000000000000039e-13));

}

int main(int, char**)

{

  test001<double>();

  return 0;

}