--- /dev/null
+// Unit test for boost::lexical_cast.
+//
+// See http://www.boost.org for most recent version, including documentation.
+//
+// Copyright Antony Polukhin, 2011-2022.
+//
+// Distributed under 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 <boost/config.hpp>
+
+#if defined(__INTEL_COMPILER)
+#pragma warning(disable: 193 383 488 981 1418 1419)
+#elif defined(BOOST_MSVC)
+#pragma warning(disable: 4097 4100 4121 4127 4146 4244 4245 4511 4512 4701 4800)
+#endif
+
+#include <boost/lexical_cast.hpp>
+
+#include <boost/cstdint.hpp>
+#include <boost/test/unit_test.hpp>
+#include <boost/test/tools/floating_point_comparison.hpp>
+
+#if (defined(__CYGWIN__) || defined(__FreeBSD__) || defined(__NetBSD__) \
+ || (defined(__hppa) && !defined(__OpenBSD__)) || (defined(__NO_LONG_DOUBLE_MATH) && (DBL_MANT_DIG != LDBL_MANT_DIG))) \
+ || defined(__MINGW64__)
+# define BOOST_LEXICAL_CAST_NO_LONG_DOUBLE_MATH_FUNCTIONS
+#endif
+
+void test_conversion_from_to_float();
+void test_conversion_from_to_double();
+void test_conversion_from_to_long_double();
+
+using namespace boost;
+
+
+unit_test::test_suite *init_unit_test_suite(int, char *[])
+{
+ unit_test::test_suite *suite =
+ BOOST_TEST_SUITE("lexical_cast float types unit test");
+ suite->add(BOOST_TEST_CASE(&test_conversion_from_to_float));
+ suite->add(BOOST_TEST_CASE(&test_conversion_from_to_double));
+ suite->add(BOOST_TEST_CASE(&test_conversion_from_to_long_double));
+
+ return suite;
+}
+
+
+// Replace "-,999" with "-999".
+template<class CharT>
+std::basic_string<CharT> to_str_gcc_workaround(std::basic_string<CharT> str)
+{
+ std::locale loc;
+ std::numpunct<CharT> const& np = BOOST_USE_FACET(std::numpunct<CharT>, loc);
+ std::ctype<CharT> const& ct = BOOST_USE_FACET(std::ctype<CharT>, loc);
+
+ if(np.grouping().empty())
+ return str;
+
+ CharT prefix[3] = { ct.widen('-'), np.thousands_sep(), CharT() };
+
+ if(str.find(prefix) != 0)
+ return str;
+
+ prefix[1] = CharT();
+ str.replace(0, 2, prefix);
+ return str;
+}
+
+template<class CharT, class T>
+std::basic_string<CharT> to_str(T t)
+{
+ std::basic_ostringstream<CharT> o;
+ o << t;
+ return to_str_gcc_workaround(o.str());
+}
+
+
+template<class T>
+void test_conversion_from_to_float_for_locale()
+{
+ std::locale current_locale;
+ typedef std::numpunct<char> numpunct;
+ numpunct const& np = BOOST_USE_FACET(numpunct, current_locale);
+ if ( !np.grouping().empty() )
+ {
+ BOOST_CHECK_THROW(
+ lexical_cast<T>( std::string("100") + np.thousands_sep() + np.thousands_sep() + "0" )
+ , bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<T>( std::string("100") + np.thousands_sep() ), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<T>( np.thousands_sep() + std::string("100") ), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<T>( std::string("1") + np.thousands_sep() + np.decimal_point() + "e10" ), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<T>( std::string("1e10") + np.thousands_sep() ), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<T>( std::string("1") + np.thousands_sep() + "e10" ), bad_lexical_cast);
+
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( to_str< char >(100000) ), 100000, (std::numeric_limits<T>::epsilon()) );
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( to_str< char >(10000000u) ), 10000000u, (std::numeric_limits<T>::epsilon()) );
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( to_str< char >(100) ), 100, (std::numeric_limits<T>::epsilon()) );
+#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( to_str< wchar_t >(100000) ), 100000, (std::numeric_limits<T>::epsilon()) );
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( to_str< wchar_t >(10000000u) ), 10000000u, (std::numeric_limits<T>::epsilon()) );
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( to_str< wchar_t >(100) ), 100, (std::numeric_limits<T>::epsilon()) );
+#endif
+ // Exception must not be thrown, when we are using no separators at all
+ BOOST_CHECK_CLOSE_FRACTION( lexical_cast<T>("30000"), static_cast<T>(30000), (std::numeric_limits<T>::epsilon()) );
+ }
+}
+
+
+
+
+/*
+ * Converts char* [and wchar_t*] to float number type and checks, that generated
+ * number does not exceeds allowed epsilon.
+ */
+#ifndef BOOST_LCAST_NO_WCHAR_T
+#define CHECK_CLOSE_ABS_DIFF(VAL,PREFIX) \
+ converted_val = lexical_cast<test_t>(#VAL); \
+ BOOST_CHECK_CLOSE_FRACTION( (static_cast<bool>(VAL ## L)? VAL ## L : std::numeric_limits<test_t>::epsilon()), \
+ (converted_val ? converted_val : std::numeric_limits<test_t>::epsilon()), \
+ std::numeric_limits<test_t>::epsilon() \
+ ); \
+ BOOST_CHECK_EQUAL(converted_val, lexical_cast<test_t>(L## #VAL) );
+
+#else
+#define CHECK_CLOSE_ABS_DIFF(VAL,TYPE) \
+ converted_val = lexical_cast<test_t>(#VAL); \
+ BOOST_CHECK_CLOSE_FRACTION( (static_cast<bool>(VAL ## L)? VAL ## L : std::numeric_limits<test_t>::epsilon()), \
+ (converted_val ? converted_val : std::numeric_limits<test_t>::epsilon()), \
+ std::numeric_limits<test_t>::epsilon() \
+ );
+#endif
+
+template <class TestType>
+void test_converion_to_float_types()
+{
+ typedef TestType test_t;
+ test_t converted_val;
+
+ BOOST_CHECK_CLOSE_FRACTION(1.0, lexical_cast<test_t>('1'), (std::numeric_limits<test_t>::epsilon()));
+ BOOST_CHECK_EQUAL(0.0, lexical_cast<test_t>('0'));
+
+ unsigned char const uc_one = '1';
+ unsigned char const uc_zero ='0';
+ BOOST_CHECK_CLOSE_FRACTION(1.0, lexical_cast<test_t>(uc_one), (std::numeric_limits<test_t>::epsilon()));
+ BOOST_CHECK_EQUAL(0.0, lexical_cast<test_t>(uc_zero));
+
+ signed char const sc_one = '1';
+ signed char const sc_zero ='0';
+ BOOST_CHECK_CLOSE_FRACTION(1.0, lexical_cast<test_t>(sc_one), (std::numeric_limits<test_t>::epsilon()));
+ BOOST_CHECK_EQUAL(0.0, lexical_cast<test_t>(sc_zero));
+
+ BOOST_CHECK_CLOSE_FRACTION(1e34L, lexical_cast<test_t>( "10000000000000000000000000000000000"), (std::numeric_limits<test_t>::epsilon()) );
+
+// VC failes the next test
+// BOOST_CHECK_CLOSE_FRACTION(1e-35L, lexical_cast<test_t>("0.00000000000000000000000000000000001"), (std::numeric_limits<test_t>::epsilon()) );
+ BOOST_CHECK_CLOSE_FRACTION(
+ 0.1111111111111111111111111111111111111111111111111111111111111111111111111L
+ , lexical_cast<test_t>("0.1111111111111111111111111111111111111111111111111111111111111111111111111")
+ , (std::numeric_limits<test_t>::epsilon()) );
+
+ CHECK_CLOSE_ABS_DIFF(1,test_t);
+ BOOST_CHECK_EQUAL(0,lexical_cast<test_t>("0"));
+ CHECK_CLOSE_ABS_DIFF(-1,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(1.0, test_t);
+ CHECK_CLOSE_ABS_DIFF(0.0, test_t);
+ CHECK_CLOSE_ABS_DIFF(-1.0,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(1e1, test_t);
+ CHECK_CLOSE_ABS_DIFF(0e1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-1e1,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(1.0e1, test_t);
+ CHECK_CLOSE_ABS_DIFF(0.0e1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-1.0e1,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(1e-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(0e-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-1e-1,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(1.0e-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(0.0e-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-1.0e-1,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(1E1, test_t);
+ CHECK_CLOSE_ABS_DIFF(0E1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-1E1,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(1.0E1, test_t);
+ CHECK_CLOSE_ABS_DIFF(0.0E1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-1.0E1,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(1E-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(0E-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-1E-1,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(1.0E-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(0.0E-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-1.0E-1, test_t);
+
+ CHECK_CLOSE_ABS_DIFF(.0E-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(.0E-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-.0E-1, test_t);
+
+ CHECK_CLOSE_ABS_DIFF(10.0, test_t);
+ CHECK_CLOSE_ABS_DIFF(00.0, test_t);
+ CHECK_CLOSE_ABS_DIFF(-10.0,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(10e1, test_t);
+ CHECK_CLOSE_ABS_DIFF(00e1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-10e1,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(10.0e1, test_t);
+ CHECK_CLOSE_ABS_DIFF(00.0e1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-10.0e1,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(10e-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(00e-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-10e-1,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(10.0e-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(00.0e-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-10.0e-1,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(10E1, test_t);
+ CHECK_CLOSE_ABS_DIFF(00E1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-10E1,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(10.0E1, test_t);
+ CHECK_CLOSE_ABS_DIFF(00.0E1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-10.0E1,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(10E-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(00E-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-10E-1,test_t);
+
+ CHECK_CLOSE_ABS_DIFF(10.0E-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(00.0E-1, test_t);
+ CHECK_CLOSE_ABS_DIFF(-10.0E-1, test_t);
+
+ CHECK_CLOSE_ABS_DIFF(-10101.0E-011, test_t);
+ CHECK_CLOSE_ABS_DIFF(-10101093, test_t);
+ CHECK_CLOSE_ABS_DIFF(10101093, test_t);
+
+ CHECK_CLOSE_ABS_DIFF(-.34, test_t);
+ CHECK_CLOSE_ABS_DIFF(.34, test_t);
+ CHECK_CLOSE_ABS_DIFF(.34e10, test_t);
+
+ BOOST_CHECK_THROW(lexical_cast<test_t>("-1.e"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("-1.E"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("1.e"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("1.E"), bad_lexical_cast);
+
+ BOOST_CHECK_THROW(lexical_cast<test_t>("1.0e"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("1.0E"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("10E"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("10e"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("1.0e-"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("1.0E-"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("10E-"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("10e-"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("e1"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("e-1"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("e-"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>(".e"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>(".11111111111111111111111111111111111111111111111111111111111111111111ee"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>(".11111111111111111111111111111111111111111111111111111111111111111111e-"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("."), bad_lexical_cast);
+
+ BOOST_CHECK_THROW(lexical_cast<test_t>("-B"), bad_lexical_cast);
+
+ // Following two tests are not valid for C++11 compilers
+ //BOOST_CHECK_THROW(lexical_cast<test_t>("0xB"), bad_lexical_cast);
+ //BOOST_CHECK_THROW(lexical_cast<test_t>("0x0"), bad_lexical_cast);
+
+ BOOST_CHECK_THROW(lexical_cast<test_t>("--1.0"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("1.0e--1"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("1.0.0"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("1e1e1"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("1.0e-1e-1"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>(" 1.0"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("1.0 "), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>(""), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("-"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>('\0'), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>('-'), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>('.'), bad_lexical_cast);
+}
+
+template <class T>
+void test_float_typess_for_overflows()
+{
+ typedef T test_t;
+ test_t minvalue = (std::numeric_limits<test_t>::min)();
+ std::string s_min_value = lexical_cast<std::string>(minvalue);
+ BOOST_CHECK_CLOSE_FRACTION(minvalue, lexical_cast<test_t>(minvalue), (std::numeric_limits<test_t>::epsilon()));
+ BOOST_CHECK_CLOSE_FRACTION(minvalue, lexical_cast<test_t>(s_min_value), (std::numeric_limits<test_t>::epsilon() * 2));
+
+ test_t maxvalue = (std::numeric_limits<test_t>::max)();
+ std::string s_max_value = lexical_cast<std::string>(maxvalue);
+ BOOST_CHECK_CLOSE_FRACTION(maxvalue, lexical_cast<test_t>(maxvalue), (std::numeric_limits<test_t>::epsilon()));
+ BOOST_CHECK_CLOSE_FRACTION(maxvalue, lexical_cast<test_t>(s_max_value), (std::numeric_limits<test_t>::epsilon()));
+
+#ifndef _LIBCPP_VERSION
+ // libc++ had a bug in implementation of stream conversions for values that must be represented as infinity.
+ // http://llvm.org/bugs/show_bug.cgi?id=15723#c4
+ BOOST_CHECK_THROW(lexical_cast<test_t>(s_max_value+"1"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>(s_max_value+"9"), bad_lexical_cast);
+
+ // VC9 can fail the following tests on floats and doubles when using stingstream...
+ BOOST_CHECK_THROW(lexical_cast<test_t>("1"+s_max_value), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<test_t>("9"+s_max_value), bad_lexical_cast);
+#endif
+
+ if ( is_same<test_t,float>::value )
+ {
+ BOOST_CHECK_THROW(lexical_cast<test_t>( (std::numeric_limits<double>::max)() ), bad_lexical_cast);
+ BOOST_CHECK(
+ (std::numeric_limits<double>::min)() - std::numeric_limits<test_t>::epsilon()
+ <= lexical_cast<test_t>( (std::numeric_limits<double>::min)() )
+ && lexical_cast<test_t>( (std::numeric_limits<double>::min)() )
+ <= (std::numeric_limits<double>::min)() + std::numeric_limits<test_t>::epsilon()
+ );
+ }
+
+ if ( sizeof(test_t) < sizeof(long double) )
+ {
+ BOOST_CHECK_THROW(lexical_cast<test_t>( (std::numeric_limits<long double>::max)() ), bad_lexical_cast);
+ BOOST_CHECK(
+ (std::numeric_limits<long double>::min)() - std::numeric_limits<test_t>::epsilon()
+ <= lexical_cast<test_t>( (std::numeric_limits<long double>::min)() )
+ && lexical_cast<test_t>( (std::numeric_limits<long double>::min)() )
+ <= (std::numeric_limits<long double>::min)() + std::numeric_limits<test_t>::epsilon()
+ );
+ }
+}
+
+#undef CHECK_CLOSE_ABS_DIFF
+
+// Epsilon is multiplied by 2 because of two lexical conversions
+#define TEST_TO_FROM_CAST_AROUND_TYPED(VAL,STRING_TYPE) \
+ test_value = VAL + std::numeric_limits<test_t>::epsilon() * i ; \
+ converted_val = lexical_cast<test_t>( lexical_cast<STRING_TYPE>(test_value) ); \
+ BOOST_CHECK_CLOSE_FRACTION( \
+ test_value, \
+ converted_val, \
+ std::numeric_limits<test_t>::epsilon() * 2 \
+ );
+
+/*
+ * For interval [ from_mult*epsilon+VAL, to_mult*epsilon+VAL ], converts float type
+ * numbers to string[wstring] and then back to float type, then compares initial
+ * values and generated.
+ * Step is epsilon
+ */
+#ifndef BOOST_LCAST_NO_WCHAR_T
+# define TEST_TO_FROM_CAST_AROUND(VAL) \
+ for(i=from_mult; i<=to_mult; ++i) { \
+ TEST_TO_FROM_CAST_AROUND_TYPED(VAL, std::string) \
+ TEST_TO_FROM_CAST_AROUND_TYPED(VAL, std::wstring) \
+ }
+#else
+# define TEST_TO_FROM_CAST_AROUND(VAL) \
+ for(i=from_mult; i<=to_mult; ++i) { \
+ TEST_TO_FROM_CAST_AROUND_TYPED(VAL, std::string) \
+ }
+#endif
+
+template <class TestType>
+void test_converion_from_to_float_types()
+{
+ typedef TestType test_t;
+ test_t test_value;
+ test_t converted_val;
+
+ int i;
+ int from_mult = -50;
+ int to_mult = 50;
+
+ TEST_TO_FROM_CAST_AROUND( 0.0 );
+
+ long double val1;
+ for(val1 = 1.0e-10L; val1 < 1e11; val1*=10 )
+ TEST_TO_FROM_CAST_AROUND( val1 );
+
+ long double val2;
+ for(val2 = -1.0e-10L; val2 > -1e11; val2*=10 )
+ TEST_TO_FROM_CAST_AROUND( val2 );
+
+ from_mult = -100;
+ to_mult = 0;
+ TEST_TO_FROM_CAST_AROUND( (std::numeric_limits<test_t>::max)() );
+
+ from_mult = 0;
+ to_mult = 100;
+ TEST_TO_FROM_CAST_AROUND( (std::numeric_limits<test_t>::min)() );
+}
+
+#undef TEST_TO_FROM_CAST_AROUND
+#undef TEST_TO_FROM_CAST_AROUND_TYPED
+
+
+template<class T, class CharT>
+void test_conversion_from_float_to_char(CharT zero)
+{
+ BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(0)) == zero + 0);
+ BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(1)) == zero + 1);
+ BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(2)) == zero + 2);
+ BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(3)) == zero + 3);
+ BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(4)) == zero + 4);
+ BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(5)) == zero + 5);
+ BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(6)) == zero + 6);
+ BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(7)) == zero + 7);
+ BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(8)) == zero + 8);
+ BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(9)) == zero + 9);
+
+ BOOST_CHECK_THROW(lexical_cast<CharT>(static_cast<T>(10)), bad_lexical_cast);
+
+ T t = (std::numeric_limits<T>::max)();
+ BOOST_CHECK_THROW(lexical_cast<CharT>(t), bad_lexical_cast);
+}
+
+template<class T, class CharT>
+void test_conversion_from_char_to_float(CharT zero)
+{
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 0)), static_cast<T>(0), (std::numeric_limits<T>::epsilon()) );
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 1)), static_cast<T>(1), (std::numeric_limits<T>::epsilon()) );
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 2)), static_cast<T>(2), (std::numeric_limits<T>::epsilon()) );
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 3)), static_cast<T>(3), (std::numeric_limits<T>::epsilon()) );
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 4)), static_cast<T>(4), (std::numeric_limits<T>::epsilon()) );
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 5)), static_cast<T>(5), (std::numeric_limits<T>::epsilon()) );
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 6)), static_cast<T>(6), (std::numeric_limits<T>::epsilon()) );
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 7)), static_cast<T>(7), (std::numeric_limits<T>::epsilon()) );
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 8)), static_cast<T>(8), (std::numeric_limits<T>::epsilon()) );
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 9)), static_cast<T>(9), (std::numeric_limits<T>::epsilon()) );
+
+ BOOST_CHECK_THROW(lexical_cast<T>( static_cast<CharT>(zero + 10)), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<T>( static_cast<CharT>(zero - 1)), bad_lexical_cast);
+}
+
+struct restore_oldloc
+{
+ std::locale oldloc;
+ ~restore_oldloc() { std::locale::global(oldloc); }
+};
+
+template<class T>
+void test_conversion_from_to_float()
+{ char const zero = '0';
+ signed char const szero = '0';
+ unsigned char const uzero = '0';
+ test_conversion_from_float_to_char<T>(zero);
+ test_conversion_from_char_to_float<T>(zero);
+ test_conversion_from_float_to_char<T>(szero);
+ test_conversion_from_char_to_float<T>(szero);
+ test_conversion_from_float_to_char<T>(uzero);
+ test_conversion_from_char_to_float<T>(uzero);
+ #if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+ wchar_t const wzero = L'0';
+ test_conversion_from_float_to_char<T>(wzero);
+ test_conversion_from_char_to_float<T>(wzero);
+ #endif
+
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>("+1"), 1, std::numeric_limits<T>::epsilon());
+ BOOST_CHECK_CLOSE_FRACTION(lexical_cast<T>("+9"), 9, std::numeric_limits<T>::epsilon());
+
+ BOOST_CHECK_THROW(lexical_cast<T>("++1"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<T>("-+9"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<T>("--1"), bad_lexical_cast);
+ BOOST_CHECK_THROW(lexical_cast<T>("+-9"), bad_lexical_cast);
+
+ test_converion_to_float_types<T>();
+ test_float_typess_for_overflows<T>();
+ test_converion_from_to_float_types<T>();
+
+
+ typedef std::numpunct<char> numpunct;
+
+ restore_oldloc guard;
+ std::locale const& oldloc = guard.oldloc;
+
+ std::string grouping1 = BOOST_USE_FACET(numpunct, oldloc).grouping();
+ std::string grouping2(grouping1);
+
+ test_conversion_from_to_float_for_locale<T>();
+
+ try
+ {
+ std::locale newloc("");
+ std::locale::global(newloc);
+
+ grouping2 = BOOST_USE_FACET(numpunct, newloc).grouping();
+ }
+ catch(std::exception const& ex)
+ {
+ std::string msg("Failed to set system locale: ");
+ msg += ex.what();
+ BOOST_TEST_MESSAGE(msg);
+ }
+
+ if(grouping1 != grouping2)
+ test_conversion_from_to_float_for_locale<T>();
+
+ if(grouping1.empty() && grouping2.empty())
+ BOOST_TEST_MESSAGE("Formatting with thousands_sep has not been tested");
+}
+
+
+void test_conversion_from_to_float()
+{
+ test_conversion_from_to_float<float>();
+}
+void test_conversion_from_to_double()
+{
+ test_conversion_from_to_float<double>();
+}
+void test_conversion_from_to_long_double()
+{
+// We do not run tests on compilers and Standard Libraries with poor support of long double
+#if !defined(BOOST_LEXICAL_CAST_NO_LONG_DOUBLE_MATH_FUNCTIONS)
+ test_conversion_from_to_float<long double>();
+#endif
+ BOOST_CHECK(true);
+}
+
projects / ceph.git / blobdiff