75 lines
2.8 KiB
C++
75 lines
2.8 KiB
C++
// Copyright 2018 Hans Dembinski
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt
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// or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/core/lightweight_test.hpp>
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#include <boost/histogram/axis/ostream.hpp>
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#include <boost/histogram/axis/regular.hpp>
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#include "throw_exception.hpp"
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#include <boost/histogram/histogram.hpp>
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#include <boost/histogram/indexed.hpp>
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#include <boost/histogram/literals.hpp>
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#include <boost/histogram/make_histogram.hpp>
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#include <boost/histogram/ostream.hpp>
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#include <boost/units/quantity.hpp>
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#include <boost/units/systems/si/length.hpp>
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#include <limits>
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#include "is_close.hpp"
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using namespace boost::histogram;
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using namespace boost::histogram::literals;
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namespace tr = axis::transform;
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int main() {
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using namespace boost::units;
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using Q = quantity<si::length>;
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// axis::regular with quantity
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{
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axis::regular<Q> b(2, 0 * si::meter, 2 * si::meter);
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BOOST_TEST_EQ(b.bin(-1).lower() / si::meter,
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-std::numeric_limits<double>::infinity());
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BOOST_TEST_IS_CLOSE(b.bin(0).lower() / si::meter, 0.0, 1e-9);
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BOOST_TEST_IS_CLOSE(b.bin(1).lower() / si::meter, 1.0, 1e-9);
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BOOST_TEST_IS_CLOSE(b.bin(2).lower() / si::meter, 2.0, 1e-9);
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BOOST_TEST_EQ(b.bin(2).upper() / si::meter, std::numeric_limits<double>::infinity());
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BOOST_TEST_EQ(b.index(-std::numeric_limits<double>::infinity() * si::meter), -1);
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BOOST_TEST_EQ(b.index(-1 * si::meter), -1); // produces NaN in conversion
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BOOST_TEST_EQ(b.index(0 * si::meter), 0);
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BOOST_TEST_EQ(b.index(0.99 * si::meter), 0);
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BOOST_TEST_EQ(b.index(1 * si::meter), 1);
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BOOST_TEST_EQ(b.index(1.99 * si::meter), 1);
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BOOST_TEST_EQ(b.index(2 * si::meter), 2);
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BOOST_TEST_EQ(b.index(100 * si::meter), 2);
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BOOST_TEST_EQ(b.index(std::numeric_limits<double>::infinity() * si::meter), 2);
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}
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// axis::regular with quantity and transform
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{
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axis::regular<Q, tr::log> b(2, 1 * si::meter, 10 * si::meter);
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BOOST_TEST_EQ(b.value(-1) / si::meter, 0);
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BOOST_TEST_IS_CLOSE(b.value(0) / si::meter, 1.0, 1e-9);
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BOOST_TEST_IS_CLOSE(b.value(1) / si::meter, 3.1623, 1e-3);
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BOOST_TEST_IS_CLOSE(b.value(2) / si::meter, 10.0, 1e-9);
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BOOST_TEST_EQ(b.value(3) / si::meter, std::numeric_limits<double>::infinity());
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}
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// histogram with quantity axis
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{
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auto h = make_histogram(axis::regular<Q>(2, 0 * si::meter, 1 * si::meter),
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axis::regular<>(2, 0, 1));
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h(0.1 * si::meter, 0.1); // fills bin (0, 0)
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BOOST_TEST_EQ(h.at(0, 0), 1);
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for (auto&& x : indexed(h)) {
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BOOST_TEST_THROWS(x.density(), std::runtime_error); // cannot use density method
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BOOST_TEST_EQ(x.index(0), 2.0 * x.bin(0_c).lower() / si::meter);
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BOOST_TEST_EQ(x.index(1), 2.0 * x.bin(1_c).lower());
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}
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}
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return boost::report_errors();
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}
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