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// Copyright 2023 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/charconv.hpp>
#include <boost/core/detail/splitmix64.hpp>
#include <boost/core/lightweight_test.hpp>
#include <cstdio>
static boost::detail::splitmix64 rng;
template<class T> void zero_extend_test()
{
int const N = 2048;
int const M = 16;
for( int i = 0; i < M; ++i )
{
char buffer[ static_cast<std::size_t>(N + 128) ];
{
unsigned long long v = static_cast<unsigned long long>( rng() );
std::snprintf( buffer, sizeof( buffer ), "%llu", v );
T ref;
auto r1 = boost::charconv::from_chars( buffer, buffer + std::strlen( buffer ), ref );
if( !BOOST_TEST_EQ( static_cast<int>(r1.ec), 0 ) )
{
std::fprintf( stderr, "Test failure for '%s': got error at position %ld\n", buffer, static_cast<long>( r1.ptr - buffer ) ); // LCOV_EXCL_LINE
}
else
{
for( int j = 1; j <= N; ++j )
{
std::snprintf( buffer, sizeof( buffer ), "%llu%se-%d", v, std::string( static_cast<std::size_t>(j), '0' ).c_str(), j );
T w;
auto r2 = boost::charconv::from_chars( buffer, buffer + std::strlen( buffer ), w );
if( !BOOST_TEST_EQ( static_cast<int>(r2.ec), 0 ) )
{
std::fprintf( stderr, "Test failure for '%s': expected '%.15g', got error at position %ld\n", buffer, ref, static_cast<long>( r1.ptr - buffer ) ); // LCOV_EXCL_LINE
}
else if( !BOOST_TEST_EQ( w, ref ) )
{
std::fprintf( stderr, "Test failure for '%s': expected '%.15g', got '%.15g'\n", buffer, ref, w ); // LCOV_EXCL_LINE
}
}
for( int j = 1; j <= N; ++j )
{
std::snprintf( buffer, sizeof( buffer ), "%llu0e-%s1", v, std::string( static_cast<std::size_t>(j), '0' ).c_str() );
T w;
auto r2 = boost::charconv::from_chars( buffer, buffer + std::strlen( buffer ), w );
if( !BOOST_TEST_EQ( static_cast<int>(r2.ec), 0 ) )
{
std::fprintf( stderr, "Test failure for '%s': expected '%.15g', got error at position %ld\n", buffer, ref, static_cast<long>( r1.ptr - buffer ) ); // LCOV_EXCL_LINE
}
else if( !BOOST_TEST_EQ( w, ref ) )
{
std::fprintf( stderr, "Test failure for '%s': expected '%.15g', got '%.15g'\n", buffer, ref, w ); // LCOV_EXCL_LINE
}
}
}
}
{
unsigned long long v = static_cast<unsigned long long>( rng() );
std::snprintf( buffer, sizeof( buffer ), "0.%llu", v );
T ref;
auto r1 = boost::charconv::from_chars( buffer, buffer + std::strlen( buffer ), ref );
if( !BOOST_TEST_EQ( static_cast<int>(r1.ec), 0 ) )
{
std::fprintf( stderr, "Test failure for '%s': got error at position %ld\n", buffer, static_cast<long>( r1.ptr - buffer ) ); // LCOV_EXCL_LINE
}
else
{
for( int j = 1; j <= N; ++j )
{
std::snprintf( buffer, sizeof( buffer ), "0.%s%llue%d", std::string( static_cast<std::size_t>(j), '0' ).c_str(), v, j );
T w;
auto r2 = boost::charconv::from_chars( buffer, buffer + std::strlen( buffer ), w );
if( !BOOST_TEST_EQ( static_cast<int>(r2.ec), 0 ) )
{
std::fprintf( stderr, "Test failure for '%s': expected '%.15g', got error at position %ld\n", buffer, ref, static_cast<long>( r1.ptr - buffer ) ); // LCOV_EXCL_LINE
}
else if( !BOOST_TEST_EQ( w, ref ) )
{
std::fprintf( stderr, "Test failure for '%s': expected '%.15g', got '%.15g'\n", buffer, ref, w ); // LCOV_EXCL_LINE
}
}
}
}
}
}
int main()
{
zero_extend_test<float>();
zero_extend_test<double>();
return boost::report_errors();
}
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