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60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
// Boost.Geometry
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// Unit Test
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// Copyright (c) 2016 Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_GEOMETRY_TEST_FORMULA_HPP
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#define BOOST_GEOMETRY_TEST_FORMULA_HPP
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#include <geometry_test_common.hpp>
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#include <boost/geometry/util/math.hpp>
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void normalize_deg(double & deg)
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{
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while (deg > 180.0)
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deg -= 360.0;
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while (deg <= -180.0)
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deg += 360.0;
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}
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void check_one(double result, double expected, double reference, double reference_error, bool normalize = false)
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{
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if (normalize)
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{
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normalize_deg(result);
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normalize_deg(expected);
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normalize_deg(reference);
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}
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double res_max = (std::max)(bg::math::abs(result), bg::math::abs(expected));
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if (res_max > 100 * std::numeric_limits<double>::epsilon())
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{
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BOOST_CHECK_CLOSE(result, expected, 0.001);
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}
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else if (res_max > 10 * std::numeric_limits<double>::epsilon())
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{
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BOOST_CHECK_CLOSE(result, expected, 0.1);
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}
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else if (res_max > std::numeric_limits<double>::epsilon())
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{
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BOOST_CHECK_CLOSE(result, expected, 10);
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}
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// NOTE: in some cases it probably will be necessary to normalize
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// the differences between the result and expected result
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double ref_diff = bg::math::abs(result - reference);
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double ref_max = (std::max)(bg::math::abs(result), bg::math::abs(reference));
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bool is_ref_close = ref_diff <= reference_error || ref_diff <= reference_error * ref_max;
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BOOST_CHECK_MESSAGE((is_ref_close), std::setprecision(16) << "{" << result << "} and {" << reference << "} not close enough.");
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}
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#endif // BOOST_GEOMETRY_TEST_FORMULA_HPP
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