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f44479bcd3
It is better to manage warnings on our side to know what warnings we need to fix or suppress, and the only thing that header does is disabling deprecation warnings on MSVC and ICC which we would prefer to not show to users.
41 lines
1.2 KiB
C++
41 lines
1.2 KiB
C++
// Copyright (c) 2010 Lars Kielhorn
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// Copyright (c) 2001-2010 Hartmut Kaiser
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/spirit/include/karma.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <iostream>
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#include <string>
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#include <iterator>
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namespace karma = boost::spirit::karma;
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// define a new real number formatting policy
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template <typename Num>
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struct scientific_policy : karma::real_policies<Num>
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{
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// we want the numbers always to be in scientific format
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static int floatfield(Num) { return std::ios_base::scientific; }
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};
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int main()
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{
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// define a new generator type based on the new policy
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typedef karma::real_generator<double, scientific_policy<double> >
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science_type;
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science_type const scientific = science_type();
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std::string output;
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typedef std::back_insert_iterator<std::string> output_iterator;
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output_iterator sink(output);
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// should output: 1.0e-01, but will output: 10.0e-02
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BOOST_TEST(karma::generate(sink, scientific, 0.1) && output == "1.0e-01");
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return boost::report_errors();
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}
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