1 // 2007-02-04 Edward Smith-Rowland <3dw4rd@verizon.net>
3 // Copyright (C) 2007, 2009 Free Software Foundation, Inc.
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 3, or (at your option)
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.
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
23 // Compare against values generated by the GNU Scientific Library.
24 // The GSL can be found on the web: http://www.gnu.org/software/gsl/
27 #if defined(__TEST_DEBUG)
32 std::cout << "line " << __LINE__ \
33 << " max_abs_frac = " << max_abs_frac \
37 #include <testsuite_hooks.h>
39 #include "../testcase.h"
43 testcase_comp_ellint_1<double> data001[] = {
44 { 2.2805491384227703, -0.90000000000000002 },
45 { 1.9953027776647296, -0.80000000000000004 },
46 { 1.8456939983747236, -0.69999999999999996 },
47 { 1.7507538029157526, -0.59999999999999998 },
48 { 1.6857503548125963, -0.50000000000000000 },
49 { 1.6399998658645112, -0.40000000000000002 },
50 { 1.6080486199305126, -0.30000000000000004 },
51 { 1.5868678474541664, -0.19999999999999996 },
52 { 1.5747455615173562, -0.099999999999999978 },
53 { 1.5707963267948966, 0.0000000000000000 },
54 { 1.5747455615173562, 0.10000000000000009 },
55 { 1.5868678474541664, 0.19999999999999996 },
56 { 1.6080486199305126, 0.30000000000000004 },
57 { 1.6399998658645112, 0.39999999999999991 },
58 { 1.6857503548125963, 0.50000000000000000 },
59 { 1.7507538029157526, 0.60000000000000009 },
60 { 1.8456939983747236, 0.69999999999999996 },
61 { 1.9953027776647296, 0.80000000000000004 },
62 { 2.2805491384227699, 0.89999999999999991 },
66 template <typename Tp>
69 const Tp eps = std::numeric_limits<Tp>::epsilon();
70 Tp max_abs_diff = -Tp(1);
71 Tp max_abs_frac = -Tp(1);
72 unsigned int num_datum = sizeof(data001)
73 / sizeof(testcase_comp_ellint_1<double>);
74 for (unsigned int i = 0; i < num_datum; ++i)
76 const Tp f = std::tr1::comp_ellint_1(Tp(data001[i].k));
77 const Tp f0 = data001[i].f0;
78 const Tp diff = f - f0;
79 if (std::abs(diff) > max_abs_diff)
80 max_abs_diff = std::abs(diff);
81 if (std::abs(f0) > Tp(10) * eps
82 && std::abs(f) > Tp(10) * eps)
84 const Tp frac = diff / f0;
85 if (std::abs(frac) > max_abs_frac)
86 max_abs_frac = std::abs(frac);
89 VERIFY(max_abs_frac < Tp(2.5000000000000020e-13));