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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/special_functions/04_comp_ellint_1/check_value.cc
1 // { dg-do run { target c++11 } }
2 // { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__" }
4 // Copyright (C) 2016 Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 3, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING3. If not see
19 // <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 <specfun_testcase.h>
42 // max(|f - f_GSL|): 6.6613381477509392e-16
43 // max(|f - f_GSL| / |f_GSL|): 4.0617918857203532e-16
44 const testcase_comp_ellint_1
<double>
47 { 2.2805491384227703, -0.90000000000000002 },
48 { 1.9953027776647296, -0.80000000000000004 },
49 { 1.8456939983747236, -0.69999999999999996 },
50 { 1.7507538029157526, -0.59999999999999998 },
51 { 1.6857503548125963, -0.50000000000000000 },
52 { 1.6399998658645112, -0.40000000000000002 },
53 { 1.6080486199305128, -0.30000000000000004 },
54 { 1.5868678474541660, -0.19999999999999996 },
55 { 1.5747455615173562, -0.099999999999999978 },
56 { 1.5707963267948966, 0.0000000000000000 },
57 { 1.5747455615173562, 0.10000000000000009 },
58 { 1.5868678474541660, 0.19999999999999996 },
59 { 1.6080486199305128, 0.30000000000000004 },
60 { 1.6399998658645112, 0.39999999999999991 },
61 { 1.6857503548125963, 0.50000000000000000 },
62 { 1.7507538029157526, 0.60000000000000009 },
63 { 1.8456939983747236, 0.69999999999999996 },
64 { 1.9953027776647296, 0.80000000000000004 },
65 { 2.2805491384227703, 0.89999999999999991 },
67 const double toler001
= 2.5000000000000020e-13;
69 template<typename Tp
, unsigned int Num
>
71 test(const testcase_comp_ellint_1
<Tp
> (&data
)[Num
], Tp toler
)
73 const Tp eps
= std::numeric_limits
<Tp
>::epsilon();
74 Tp max_abs_diff
= -Tp(1);
75 Tp max_abs_frac
= -Tp(1);
76 unsigned int num_datum
= Num
;
77 for (unsigned int i
= 0; i
< num_datum
; ++i
)
79 const Tp f
= std::comp_ellint_1(data
[i
].k
);
80 const Tp f0
= data
[i
].f0
;
81 const Tp diff
= f
- f0
;
82 if (std::abs(diff
) > max_abs_diff
)
83 max_abs_diff
= std::abs(diff
);
84 if (std::abs(f0
) > Tp(10) * eps
85 && std::abs(f
) > Tp(10) * eps
)
87 const Tp frac
= diff
/ f0
;
88 if (std::abs(frac
) > max_abs_frac
)
89 max_abs_frac
= std::abs(frac
);
92 VERIFY(max_abs_frac
< toler
);
98 test(data001
, toler001
);