1 /* Boost test/pow.cpp
2 * test the pow function
3 *
4 * Copyright 2002-2003 Guillaume Melquiond
5 *
6 * Distributed under the Boost Software License, Version 1.0.
7 * (See accompanying file LICENSE_1_0.txt or
8 * copy at http://www.boost.org/LICENSE_1_0.txt)
9 */
10
11 #include <boost/numeric/interval.hpp>
12 #include <boost/test/minimal.hpp>
13 #include "bugs.hpp"
14
test_pow(double al,double au,double bl,double bu,int p)15 bool test_pow(double al, double au, double bl, double bu, int p) {
16 typedef boost::numeric::interval<double> I;
17 I b = pow(I(al, au), p);
18 return b.lower() == bl && b.upper() == bu;
19 }
20
test_main(int,char * [])21 int test_main(int, char *[]) {
22 BOOST_CHECK(test_pow(2, 3, 8, 27, 3));
23 BOOST_CHECK(test_pow(2, 3, 16, 81, 4));
24 BOOST_CHECK(test_pow(-3, 2, -27, 8, 3));
25 BOOST_CHECK(test_pow(-3, 2, 0, 81, 4));
26 BOOST_CHECK(test_pow(-3, -2, -27, -8, 3));
27 BOOST_CHECK(test_pow(-3, -2, 16, 81, 4));
28
29 BOOST_CHECK(test_pow(2, 4, 1./64, 1./8, -3));
30 BOOST_CHECK(test_pow(2, 4, 1./256, 1./16, -4));
31 BOOST_CHECK(test_pow(-4, -2, -1./8, -1./64, -3));
32 BOOST_CHECK(test_pow(-4, -2, 1./256, 1./16, -4));
33
34 BOOST_CHECK(test_pow(2, 3, 1, 1, 0));
35 BOOST_CHECK(test_pow(-3, 2, 1, 1, 0));
36 BOOST_CHECK(test_pow(-3, -2, 1, 1, 0));
37
38 # ifdef BOOST_BORLANDC
39 ::detail::ignore_warnings();
40 # endif
41 return 0;
42 }
43