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Diffstat (limited to 'libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/20_riemann_zeta/check_value_neg.cc')
-rw-r--r-- | libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/20_riemann_zeta/check_value_neg.cc | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/20_riemann_zeta/check_value_neg.cc b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/20_riemann_zeta/check_value_neg.cc new file mode 100644 index 00000000000..2a86846ea4a --- /dev/null +++ b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/20_riemann_zeta/check_value_neg.cc @@ -0,0 +1,133 @@ +// 2007-02-04 Edward Smith-Rowland <3dw4rd@verizon.net> +// +// Copyright (C) 2007 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 2, 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 COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// riemann_zeta + + +// 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 = sizeof(data001) + / sizeof(testcase_riemann_zeta<double>); + 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; +} |