third_party/boost/spirit/test/qi/real2.cpp

/*=============================================================================
    Copyright (c) 2001-2011 Joel de Guzman
    Copyright (c) 2001-2011 Hartmut Kaiser
    Copyright (c) 2011      Bryce Lelbach

    Use, modification and distribution is subject to the Boost Software
    License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
    http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/

#include "real.hpp"

int
main()
{
    using spirit_test::test;
    using spirit_test::test_attr;
    ///////////////////////////////////////////////////////////////////////////
    //  signed real number tests
    ///////////////////////////////////////////////////////////////////////////
    {
        using boost::spirit::qi::double_;
        using boost::spirit::qi::float_;
        using boost::spirit::qi::parse;
        double  d;
        float f;

        BOOST_TEST(test("-1234", double_));
        BOOST_TEST(test_attr("-1234", double_, d) && compare(d, -1234));

        BOOST_TEST(test("-1.2e3", double_));
        BOOST_TEST(test_attr("-1.2e3", double_, d) && compare(d, -1.2e3));

        BOOST_TEST(test("+1.2e3", double_));
        BOOST_TEST(test_attr("+1.2e3", double_, d) && compare(d, 1.2e3));

        BOOST_TEST(test("-0.1", double_));
        BOOST_TEST(test_attr("-0.1", double_, d) && compare(d, -0.1));

        BOOST_TEST(test("-1.2e-3", double_));
        BOOST_TEST(test_attr("-1.2e-3", double_, d) && compare(d, -1.2e-3));

        BOOST_TEST(test("-1.e2", double_));
        BOOST_TEST(test_attr("-1.e2", double_, d) && compare(d, -1.e2));

        BOOST_TEST(test("-.2e3", double_));
        BOOST_TEST(test_attr("-.2e3", double_, d) && compare(d, -.2e3));

        BOOST_TEST(test("-2e3", double_));
        BOOST_TEST(test_attr("-2e3", double_, d) && compare(d, -2e3));

        BOOST_TEST(!test("-e3", double_));
        BOOST_TEST(!test_attr("-e3", double_, d));

        BOOST_TEST(!test("-1.2e", double_));
        BOOST_TEST(!test_attr("-1.2e", double_, d));

        BOOST_TEST(test_attr("-5.7222349715140557e+307", double_, d));
        BOOST_TEST(d == -5.7222349715140557e+307); // exact!

        BOOST_TEST(test_attr("2.0332938517515416e-308", double_, d));
        BOOST_TEST(d == 2.0332938517515416e-308); // exact!

        BOOST_TEST(test_attr("20332938517515416e291", double_, d));
        BOOST_TEST(d == 20332938517515416e291); // exact!

        BOOST_TEST(test_attr("2.0332938517515416e307", double_, d));
        BOOST_TEST(d == 2.0332938517515416e307); // exact!

        BOOST_TEST(test_attr("1.7976931348623157e+308", double_, d));   // DBL_MAX
        BOOST_TEST(d == 1.7976931348623157e+308); // exact!

        BOOST_TEST(test_attr("2.2204460492503131e-16", double_, d));    // DBL_EPSILON
        BOOST_TEST(d == 2.2204460492503131e-16); // exact!

        BOOST_TEST(test_attr("2.2250738585072014e-308", double_, d));   // DBL_MIN
        BOOST_TEST(d == 2.2250738585072014e-308); // exact!

        BOOST_TEST(test_attr("4.9406564584124654e-324", double_, d));   // DBL_DENORM_MIN
        BOOST_TEST(d == 4.9406564584124654e-324); // exact!

        BOOST_TEST(test_attr("219721.03839999999", double_, d));
        BOOST_TEST(d == 219721.03839999999); // exact!

        BOOST_TEST(test_attr("-5.7222349715140557e+307", double_, d));
        BOOST_TEST(d == -5.7222349715140557e+307); // exact!

        BOOST_TEST(test_attr("2.2204460492503131e-16", double_, d));
        BOOST_TEST(d == 2.2204460492503131e-16); // exact!

        // floats...

        BOOST_TEST(test_attr("3.402823466e+38", float_, f));            // FLT_MAX
        BOOST_TEST(f == 3.402823466e+38F); // exact!

        BOOST_TEST(test_attr("1.192092896e-07", float_, f));            // FLT_EPSILON
        BOOST_TEST(f == 1.192092896e-07F); // exact!

        BOOST_TEST(test_attr("1.175494351e-38", float_, f));            // FLT_MIN
        BOOST_TEST(f == 1.175494351e-38F); // exact!

        BOOST_TEST(test_attr("219721.03839999999", float_, f));
        BOOST_TEST(f == 219721.03839999999f); // inexact

        BOOST_TEST(test_attr("2.2204460492503131e-16", float_, f));
        BOOST_TEST(f == 2.2204460492503131e-16f); // inexact

        // big exponents!
        // fail, but do not assert!
        BOOST_TEST(!test_attr("123e1234000000", double_, d));
        BOOST_TEST(!test_attr("123e-1234000000", double_, d));

        using boost::core::isinf;
        using boost::core::isnan;
        using boost::core::signbit;

        BOOST_TEST(test("-inf", double_));
        BOOST_TEST(test("-infinity", double_));
        BOOST_TEST(test_attr("-inf", double_, d) &&
            isinf(d) && signbit(d));
        BOOST_TEST(test_attr("-infinity", double_, d) &&
            isinf(d) && signbit(d));
        BOOST_TEST(test("-INF", double_));
        BOOST_TEST(test("-INFINITY", double_));
        BOOST_TEST(test_attr("-INF", double_, d) &&
            isinf(d) && signbit(d));
        BOOST_TEST(test_attr("-INFINITY", double_, d) &&
            isinf(d) && signbit(d));

        BOOST_TEST(test("-nan", double_));
        BOOST_TEST(test_attr("-nan", double_, d) &&
            isnan(d) && signbit(d));
        BOOST_TEST(test("-NAN", double_));
        BOOST_TEST(test_attr("-NAN", double_, d) &&
            isnan(d) && signbit(d));

        BOOST_TEST(test("-nan(...)", double_));
        BOOST_TEST(test_attr("-nan(...)", double_, d) &&
            isnan(d) && signbit(d));
        BOOST_TEST(test("-NAN(...)", double_));
        BOOST_TEST(test_attr("-NAN(...)", double_, d) &&
            isnan(d) && signbit(d));

        BOOST_TEST(!test("1e999", double_));
        BOOST_TEST(!test("1e-999", double_));
        BOOST_TEST(test_attr("2.1111111e-303", double_, d) &&
            compare(d, 2.1111111e-303));
        BOOST_TEST(!test_attr("1.1234e", double_, d) && compare(d, 1.1234));

        // https://svn.boost.org/trac10/ticket/11608
        BOOST_TEST(test_attr("1267650600228229401496703205376", double_, d) &&
            compare(d, 1.2676506002282294e+30));

        BOOST_TEST(test_attr("12676506.00228229401496703205376", double_, d) &&
            compare(d, 12676506.00228229, 0.00000001));

        BOOST_TEST(test_attr("12676506.00228229401496703205376E6", double_, d) &&
            compare(d, 12676506002282.29, 0.01));

        char const* long_number = "17976931348623157081452742373170435679807056"
            "7525844996598917476803157260780028538760589558632766878171540458953"
            "5143824642343213268894641827684675467035375169860499105765512820762"
            "4549009038932894407586850845513394230458323690322294816580855933212"
            "3348274797826204144723168738177180919299881250404026184124858368.00"
            "00000000000000";

        BOOST_TEST(test_attr(long_number, double_, d) &&
            compare(d, 1.7976931348623157e+308));
    }

    return boost::report_errors();
}