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// Copyright 2023 Matt Borland
// Copyright 2023 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/config.hpp>
#ifdef BOOST_HAS_INT128
// We need to define these operator<< overloads before
// including boost/core/lightweight_test.hpp, or they
// won't be visible to BOOST_TEST_EQ
// LCOV_EXCL_START
#include <ostream>
static char* mini_to_chars( char (&buffer)[ 64 ], boost::uint128_type v )
{
char* p = buffer + 64;
*--p = '\0';
do
{
*--p = "0123456789"[ v % 10 ];
v /= 10;
}
while ( v != 0 );
return p;
}
std::ostream& operator<<( std::ostream& os, boost::uint128_type v )
{
char buffer[ 64 ];
os << mini_to_chars( buffer, v );
return os;
}
std::ostream& operator<<( std::ostream& os, boost::int128_type v )
{
char buffer[ 64 ];
char* p;
if( v >= 0 )
{
p = mini_to_chars( buffer, static_cast<boost::uint128_type>(v) );
}
else
{
p = mini_to_chars( buffer, -static_cast<boost::uint128_type>(v) );
*--p = '-';
}
os << p;
return os;
}
// LCOV_EXCL_STOP
#endif // #ifdef BOOST_HAS_INT128
#include <boost/charconv/limits.hpp>
#include <boost/charconv/to_chars.hpp>
#include <boost/charconv/from_chars.hpp>
#include <boost/core/lightweight_test.hpp>
#include <system_error>
#include <limits>
#include <string>
void test_odr_use( int const* );
template<typename T> void test_integral( T value )
{
// no base
{
char buffer[ boost::charconv::limits<T>::max_chars10 ];
auto r = boost::charconv::to_chars( buffer, buffer + sizeof( buffer ), value );
BOOST_TEST(r.ec == std::errc());
T v2 = 0;
auto r2 = boost::charconv::from_chars( buffer, r.ptr, v2 );
if( BOOST_TEST( r2.ec == std::errc() ) && BOOST_TEST( v2 == value ) )
{
}
else
{
std::cerr << "... test failure for value=" << value << "; buffer='" << std::string( buffer, r.ptr ) << "'" << std::endl; // LCOV_EXCL_LINE
}
}
// base 10
{
char buffer[ boost::charconv::limits<T>::max_chars10 ];
auto r = boost::charconv::to_chars( buffer, buffer + sizeof( buffer ), value, 10 );
BOOST_TEST(r.ec == std::errc());
T v2 = 0;
auto r2 = boost::charconv::from_chars( buffer, r.ptr, v2, 10 );
if( BOOST_TEST( r2.ec == std::errc() ) && BOOST_TEST( v2 == value ) )
{
}
else
{
std::cerr << "... test failure for value=" << value << "; buffer='" << std::string( buffer, r.ptr ) << "'" << std::endl; // LCOV_EXCL_LINE
}
}
// any base
for( int base = 2; base <= 36; ++base )
{
char buffer[ boost::charconv::limits<T>::max_chars ];
auto r = boost::charconv::to_chars( buffer, buffer + sizeof( buffer ), value, base );
BOOST_TEST(r.ec == std::errc());
T v2 = 0;
auto r2 = boost::charconv::from_chars( buffer, r.ptr, v2, base );
if( BOOST_TEST( r2.ec == std::errc() ) && BOOST_TEST( v2 == value ) )
{
}
else
{
std::cerr << "... test failure for value=" << value << "; buffer='" << std::string( buffer, r.ptr ) << "'" << std::endl; // LCOV_EXCL_LINE
}
}
}
template<typename T> void test_integral()
{
BOOST_TEST_GE( boost::charconv::limits<T>::max_chars10, std::numeric_limits<T>::digits10 );
BOOST_TEST_GE( boost::charconv::limits<T>::max_chars, std::numeric_limits<T>::digits );
test_odr_use( &boost::charconv::limits<T>::max_chars10 );
test_odr_use( &boost::charconv::limits<T>::max_chars );
test_integral( (std::numeric_limits<T>::min)() );
test_integral( (std::numeric_limits<T>::max)() );
}
template<typename T> void test_floating_point( T value )
{
// no base, max_chars10
{
char buffer[ boost::charconv::limits<T>::max_chars10 ];
auto r = boost::charconv::to_chars( buffer, buffer + sizeof( buffer ), value );
if (!BOOST_TEST(r.ec == std::errc()))
{
// LCOV_EXCL_START
std::cerr << " Value: " << value
<< "\nBuffer: " << std::string(buffer)
<< "\n Ec: " << static_cast<int>(r.ec) << std::endl;
// LCOV_EXCL_STOP
}
T v2 = 0;
auto r2 = boost::charconv::from_chars( buffer, r.ptr, v2 );
if (!BOOST_TEST(r2.ec == std::errc()) && BOOST_TEST_EQ( v2, value ))
{
// LCOV_EXCL_START
std::cerr << " Value: " << value
<< "\nBuffer: " << std::string(buffer)
<< "\nRetVal: " << v2
<< "\n Ec: " << static_cast<int>(r2.ec) << std::endl;
// LCOV_EXCL_STOP
}
}
// no base, max_chars
{
char buffer[ boost::charconv::limits<T>::max_chars ];
auto r = boost::charconv::to_chars( buffer, buffer + sizeof( buffer ), value );
if (!BOOST_TEST(r.ec == std::errc()))
{
// LCOV_EXCL_START
std::cerr << " Value: " << value
<< "\nBuffer: " << std::string(buffer)
<< "\n Ec: " << static_cast<int>(r.ec) << std::endl;
// LCOV_EXCL_STOP
}
T v2 = 0;
auto r2 = boost::charconv::from_chars( buffer, r.ptr, v2 );
if (!BOOST_TEST(r2.ec == std::errc()) && BOOST_TEST_EQ( v2, value ))
{
// LCOV_EXCL_START
std::cerr << " Value: " << value
<< "\nBuffer: " << std::string(buffer)
<< "\nRetVal: " << v2
<< "\n Ec: " << static_cast<int>(r2.ec) << std::endl;
// LCOV_EXCL_STOP
}
}
}
template<typename T> void test_floating_point()
{
BOOST_TEST_GE( boost::charconv::limits<T>::max_chars10, std::numeric_limits<T>::max_digits10 );
BOOST_TEST_GE( boost::charconv::limits<T>::max_chars, std::numeric_limits<T>::max_digits10 );
test_odr_use( &boost::charconv::limits<T>::max_chars10 );
test_odr_use( &boost::charconv::limits<T>::max_chars );
test_floating_point( (std::numeric_limits<T>::min)() );
test_floating_point( -(std::numeric_limits<T>::min)() );
test_floating_point( (std::numeric_limits<T>::max)() );
test_floating_point( -(std::numeric_limits<T>::max)() );
}
int main()
{
test_integral<char>();
test_integral<signed char>();
test_integral<unsigned char>();
test_integral<short>();
test_integral<unsigned short>();
test_integral<int>();
test_integral<unsigned>();
test_integral<long>();
test_integral<unsigned long>();
test_integral<long long>();
test_integral<unsigned long long>();
test_floating_point<float>();
test_floating_point<double>();
#ifndef BOOST_CHARCONV_UNSUPPORTED_LONG_DOUBLE
test_floating_point<long double>();
#endif
#ifdef BOOST_CHARCONV_HAS_FLOAT16
test_floating_point<std::float16_t>();
#endif
#ifdef BOOST_CHARCONV_HAS_FLOAT32
test_floating_point<std::float32_t>();
#endif
#ifdef BOOST_CHARCONV_HAS_FLOAT64
test_floating_point<std::float64_t>();
#endif
#ifdef BOOST_CHARCONV_HAS_BRAINFLOAT16
test_floating_point<std::bfloat16_t>();
#endif
#ifdef BOOST_CHARCONV_HAS_INT128
test_integral<boost::int128_type>();
test_integral<boost::uint128_type>();
#endif
return boost::report_errors();
}
void test_odr_use( int const* )
{
}
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