154 lines
4.0 KiB
C++
154 lines
4.0 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Unit Test
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// Copyright (c) 2014, Oracle and/or its affiliates.
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// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
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// Licensed under the Boost Software License version 1.0.
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// http://www.boost.org/users/license.html
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#ifndef BOOST_TEST_MODULE
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#define BOOST_TEST_MODULE test_math_sqrt
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#endif
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#include <cmath>
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#include <iostream>
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#include <boost/test/included/unit_test.hpp>
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#include <boost/config.hpp>
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#include <boost/type_traits/is_fundamental.hpp>
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#include "number_types.hpp"
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// important: the include above must precede the include below,
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// otherwise the test will fail for the custom number type:
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// custom_with_global_sqrt
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#include <boost/geometry/util/math.hpp>
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#include <boost/geometry/algorithms/not_implemented.hpp>
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#ifdef HAVE_TTMATH
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# include <boost/geometry/extensions/contrib/ttmath_stub.hpp>
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#endif
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namespace bg = boost::geometry;
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// call BOOST_CHECK
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template <typename Argument, bool IsFundamental /* true */>
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struct check
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{
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template <typename Result>
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static inline void apply(Argument const& arg, Result const& result)
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{
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BOOST_CHECK_CLOSE(static_cast<double>(bg::math::sqrt(arg)),
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static_cast<double>(result),
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0.00001);
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}
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};
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template <typename Argument>
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struct check<Argument, false>
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{
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template <typename Result>
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static inline void apply(Argument const& arg, Result const& result)
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{
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Result const tol(0.00001);
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BOOST_CHECK( bg::math::abs(bg::math::sqrt(arg) - result) < tol );
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}
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};
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// test sqrt return type and value
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template
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<
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typename Argument,
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typename ExpectedResult,
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typename Result = typename bg::math::detail::square_root
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<
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Argument
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>::return_type,
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bool IsFundamental = boost::is_fundamental<Argument>::value
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>
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struct check_sqrt
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: bg::not_implemented<Argument, Result, ExpectedResult>
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{};
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template <typename Argument, typename Result, bool IsFundamental>
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struct check_sqrt<Argument, Result, Result, IsFundamental>
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{
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static inline void apply(Argument const& arg, Result const& result)
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{
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << "testing: " << typeid(Result).name()
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<< " sqrt(" << typeid(Argument).name()
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<< ")" << std::endl;
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#endif
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check<Argument, IsFundamental>::apply(arg, result);
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}
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};
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// test cases
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BOOST_AUTO_TEST_CASE( test_math_sqrt_fundamental )
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{
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static const double sqrt2 = std::sqrt(2.0);
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static const long double sqrt2L = std::sqrt(2.0L);
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static const float sqrt2F = std::sqrt(2.0F);
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check_sqrt<float, float>::apply(2.0F, sqrt2F);
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check_sqrt<double, double>::apply(2.0, sqrt2);
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check_sqrt<long double, long double>::apply(2.0L, sqrt2L);
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check_sqrt<char, double>::apply(2, sqrt2);
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check_sqrt<signed char, double>::apply(2, sqrt2);
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check_sqrt<short, double>::apply(2, sqrt2);
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check_sqrt<int, double>::apply(2, sqrt2);
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check_sqrt<long, double>::apply(2L, sqrt2);
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#if !defined(BOOST_NO_LONG_LONG)
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check_sqrt<long long, double>::apply(2LL, sqrt2);
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#endif
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#ifdef BOOST_HAS_LONG_LONG
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check_sqrt
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<
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boost::long_long_type, double
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>::apply(boost::long_long_type(2), sqrt2);
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#endif
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}
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BOOST_AUTO_TEST_CASE( test_math_sqrt_custom )
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{
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typedef number_types::custom<double> custom1;
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typedef custom_global<double> custom2;
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typedef number_types::custom_with_global_sqrt<double> custom3;
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static const double sqrt2 = std::sqrt(2.0);
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check_sqrt<custom1, custom1>::apply(custom1(2.0), custom1(sqrt2));
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check_sqrt<custom2, custom2>::apply(custom2(2.0), custom2(sqrt2));
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check_sqrt<custom3, custom3>::apply(custom3(2.0), custom3(sqrt2));
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#ifdef HAVE_TTMATH
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typedef ttmath_big custom4;
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typedef ttmath::Big<1, 4> custom5;
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check_sqrt<custom4, custom4>::apply(custom4(2.0), custom4(sqrt2));
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check_sqrt<custom5, custom5>::apply(custom5(2.0), custom5(sqrt2));
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#endif
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}
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