mirror of
https://github.com/boostorg/charconv.git
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44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
// Copyright 2023 Matt Borland
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/charconv.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <type_traits>
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#include <limits>
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#include <cstring>
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#include <cstdint>
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#include <cerrno>
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#include <utility>
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// These numbers diverge from what the formatting is using printf
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// See: https://godbolt.org/z/zd34KcWMW
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template <typename T>
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void printf_divergence()
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{
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char buffer1[256] {};
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T v1 = 3.4;
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auto r1 = boost::charconv::to_chars(buffer1, buffer1 + sizeof(buffer1), v1);
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BOOST_TEST_EQ(r1.ec, 0);
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BOOST_TEST_CSTR_EQ(buffer1, "3.4");
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char buffer2[256] {};
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T v2 = 3000.40;
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auto r2 = boost::charconv::to_chars(buffer2, buffer2 + sizeof(buffer2), v2);
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BOOST_TEST_EQ(r2.ec, 0);
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BOOST_TEST_CSTR_EQ(buffer2, "3000.4");
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char buffer3[256] {};
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T v3 = -3000000300000000.5;
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auto r3 = boost::charconv::to_chars(buffer3, buffer3 + sizeof(buffer3), v3);
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BOOST_TEST_EQ(r3.ec, 0);
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BOOST_TEST_CSTR_EQ(buffer3, "-3000000300000000.5");
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}
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int main()
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{
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printf_divergence<double>();
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return boost::report_errors();
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}
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