| //===----------------------------------------------------------------------===// |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++03, c++11, c++14, c++17 |
| // UNSUPPORTED: libcpp-has-no-incomplete-format |
| |
| // <format> |
| |
| // [format.formatter.spec]: |
| // Each header that declares the template `formatter` provides the following |
| // enabled specializations: |
| // For each `charT`, for each cv-unqualified arithmetic type `ArithmeticT` |
| // other than char, wchar_t, char8_t, char16_t, or char32_t, a specialization |
| // template<> struct formatter<ArithmeticT, charT> |
| // |
| // This file tests with `ArithmeticT = floating-point`, for each valid `charT`. |
| // Where `floating-point` is one of: |
| // - float |
| // - double |
| // - long double |
| |
| #include <format> |
| |
| #include <algorithm> |
| #include <array> |
| #include <cassert> |
| #include <cmath> |
| #include <charconv> |
| #include <concepts> |
| #include <string> |
| #include <type_traits> |
| |
| #include "test_format_context.h" |
| #include "test_macros.h" |
| #include "make_string.h" |
| |
| #define STR(S) MAKE_STRING(CharT, S) |
| |
| template <class CharT, class ArithmeticT> |
| void test(std::basic_string_view<CharT> fmt, ArithmeticT arg, std::basic_string<CharT> expected) { |
| auto parse_ctx = std::basic_format_parse_context<CharT>(fmt); |
| std::formatter<ArithmeticT, CharT> formatter; |
| static_assert(std::semiregular<decltype(formatter)>); |
| |
| auto it = formatter.parse(parse_ctx); |
| assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}')); |
| |
| std::basic_string<CharT> result; |
| auto out = std::back_inserter(result); |
| using FormatCtxT = std::basic_format_context<decltype(out), CharT>; |
| |
| FormatCtxT format_ctx = |
| test_format_context_create<decltype(out), CharT>(out, std::make_format_args<FormatCtxT>(arg)); |
| formatter.format(arg, format_ctx); |
| |
| if (expected.empty()) { |
| std::array<char, 128> buffer; |
| expected.append(buffer.begin(), std::to_chars(buffer.begin(), buffer.end(), arg).ptr); |
| } |
| |
| assert(result == expected); |
| } |
| |
| template <class StringT, class ArithmeticT> |
| void test_termination_condition(StringT f, ArithmeticT arg, StringT expected = {}) { |
| // The format-spec is valid if completely consumed or terminates at a '}'. |
| // The valid inputs all end with a '}'. The test is executed twice: |
| // - first with the terminating '}', |
| // - second consuming the entire input. |
| using CharT = typename StringT::value_type; |
| std::basic_string_view<CharT> fmt{f}; |
| assert(fmt.back() == CharT('}') && "Pre-condition failure"); |
| |
| test(fmt, arg, expected); |
| fmt.remove_suffix(1); |
| test(fmt, arg, expected); |
| } |
| |
| template <class CharT, class ArithmeticT> |
| void test_hex_lower_case_precision(ArithmeticT value) { |
| std::array<char, 25'000> buffer; |
| char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::hex, 20'000).ptr; |
| test_termination_condition(STR(".20000a}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size_t size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000a}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000a}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000a}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000a}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #ifndef TEST_HAS_NO_LOCALIZATION |
| end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::hex, 20'000).ptr; |
| test_termination_condition(STR(".20000La}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000La}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000La}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000La}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000La}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #endif |
| } |
| |
| template <class CharT, class ArithmeticT> |
| void test_hex_upper_case_precision(ArithmeticT value) { |
| std::array<char, 25'000> buffer; |
| char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::hex, 20'000).ptr; |
| std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); }); |
| test_termination_condition(STR(".20000A}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size_t size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000A}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000A}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000A}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000A}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #ifndef TEST_HAS_NO_LOCALIZATION |
| end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::hex, 20'000).ptr; |
| std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); }); |
| test_termination_condition(STR(".20000LA}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000LA}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000LA}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000LA}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000LA}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #endif |
| } |
| |
| template <class CharT, class ArithmeticT> |
| void test_scientific_lower_case_precision(ArithmeticT value) { |
| std::array<char, 25'000> buffer; |
| char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::scientific, 20'000).ptr; |
| test_termination_condition(STR(".20000e}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size_t size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000e}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000e}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000e}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000e}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #ifndef TEST_HAS_NO_LOCALIZATION |
| end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::scientific, 20'000).ptr; |
| test_termination_condition(STR(".20000Le}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000Le}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000Le}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000Le}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000Le}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #endif |
| } |
| |
| template <class CharT, class ArithmeticT> |
| void test_scientific_upper_case_precision(ArithmeticT value) { |
| std::array<char, 25'000> buffer; |
| char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::scientific, 20'000).ptr; |
| std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); }); |
| test_termination_condition(STR(".20000E}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size_t size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000E}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000E}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000E}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000E}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #ifndef TEST_HAS_NO_LOCALIZATION |
| end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::scientific, 20'000).ptr; |
| std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); }); |
| test_termination_condition(STR(".20000LE}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000LE}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000LE}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000LE}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000LE}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #endif |
| } |
| |
| template <class CharT, class ArithmeticT> |
| void test_fixed_lower_case_precision(ArithmeticT value) { |
| std::array<char, 25'000> buffer; |
| char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::fixed, 20'000).ptr; |
| test_termination_condition(STR(".20000f}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size_t size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000f}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000f}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000f}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000f}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #ifndef TEST_HAS_NO_LOCALIZATION |
| end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::fixed, 20'000).ptr; |
| test_termination_condition(STR(".20000Lf}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000Lf}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000Lf}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000Lf}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000Lf}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #endif |
| } |
| |
| template <class CharT, class ArithmeticT> |
| void test_fixed_upper_case_precision(ArithmeticT value) { |
| std::array<char, 25'000> buffer; |
| char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::fixed, 20'000).ptr; |
| std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); }); |
| test_termination_condition(STR(".20000F}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size_t size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000F}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000F}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000F}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000F}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #ifndef TEST_HAS_NO_LOCALIZATION |
| end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::fixed, 20'000).ptr; |
| std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); }); |
| test_termination_condition(STR(".20000LF}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000LF}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000LF}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000LF}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000LF}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #endif |
| } |
| |
| template <class CharT, class ArithmeticT> |
| void test_general_lower_case_precision(ArithmeticT value) { |
| std::array<char, 25'000> buffer; |
| char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::general, 20'000).ptr; |
| test_termination_condition(STR(".20000g}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size_t size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000g}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000g}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000g}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000g}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #ifndef TEST_HAS_NO_LOCALIZATION |
| end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::general, 20'000).ptr; |
| test_termination_condition(STR(".20000Lg}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000Lg}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000Lg}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000Lg}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000Lg}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #endif |
| } |
| |
| template <class CharT, class ArithmeticT> |
| void test_general_upper_case_precision(ArithmeticT value) { |
| std::array<char, 25'000> buffer; |
| char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::general, 20'000).ptr; |
| std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); }); |
| test_termination_condition(STR(".20000G}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size_t size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000G}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000G}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000G}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000G}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #ifndef TEST_HAS_NO_LOCALIZATION |
| end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::general, 20'000).ptr; |
| std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); }); |
| test_termination_condition(STR(".20000LG}"), value, std::basic_string<CharT>{buffer.begin(), end}); |
| |
| size = buffer.end() - end; |
| std::fill_n(end, size, '#'); |
| test_termination_condition(STR("#<25000.20000LG}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end()); |
| test_termination_condition(STR("#^25000.20000LG}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end()); |
| test_termination_condition(STR("#>25000.20000LG}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| std::fill_n(buffer.begin(), size, '0'); |
| if (std::signbit(value)) { |
| buffer[0] = '-'; |
| buffer[size] = '0'; |
| } |
| test_termination_condition(STR("025000.20000LG}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()}); |
| #endif |
| } |
| |
| template <class CharT, class ArithmeticT> |
| void test_value(ArithmeticT value) { |
| test_hex_lower_case_precision<CharT>(value); |
| test_hex_upper_case_precision<CharT>(value); |
| |
| test_scientific_lower_case_precision<CharT>(value); |
| test_scientific_upper_case_precision<CharT>(value); |
| |
| test_fixed_lower_case_precision<CharT>(value); |
| test_fixed_upper_case_precision<CharT>(value); |
| |
| test_general_lower_case_precision<CharT>(value); |
| test_general_upper_case_precision<CharT>(value); |
| } |
| |
| template <class ArithmeticT, class CharT> |
| void test_special_values() { |
| using A = ArithmeticT; |
| |
| test_value<CharT>(-std::numeric_limits<A>::max()); |
| test_value<CharT>(A(-1.0)); |
| test_value<CharT>(-std::numeric_limits<A>::min()); |
| test_value<CharT>(-std::numeric_limits<A>::denorm_min()); |
| test_value<CharT>(A(-0.0)); |
| |
| test_value<CharT>(A(0.0)); |
| test_value<CharT>(std::numeric_limits<A>::denorm_min()); |
| test_value<CharT>(A(1.0)); |
| test_value<CharT>(std::numeric_limits<A>::min()); |
| test_value<CharT>(std::numeric_limits<A>::max()); |
| } |
| |
| template <class ArithmeticT, class CharT> |
| void test_float_type() { |
| using A = ArithmeticT; |
| |
| test_termination_condition(STR("}"), A(-std::numeric_limits<float>::max())); |
| test_termination_condition(STR("}"), A(-std::numeric_limits<float>::min())); |
| test_termination_condition(STR("}"), A(-0.0)); |
| |
| test_termination_condition(STR("}"), A(0.0)); |
| test_termination_condition(STR("}"), A(std::numeric_limits<float>::min())); |
| test_termination_condition(STR("}"), A(std::numeric_limits<float>::max())); |
| if (sizeof(A) > sizeof(float)) { |
| test_termination_condition(STR("}"), A(-std::numeric_limits<double>::max())); |
| test_termination_condition(STR("}"), A(-std::numeric_limits<double>::min())); |
| test_termination_condition(STR("}"), A(std::numeric_limits<double>::min())); |
| test_termination_condition(STR("}"), A(std::numeric_limits<double>::max())); |
| } |
| if (sizeof(A) > sizeof(double)) { |
| test_termination_condition(STR("}"), A(-std::numeric_limits<long double>::max())); |
| test_termination_condition(STR("}"), A(-std::numeric_limits<long double>::min())); |
| test_termination_condition(STR("}"), A(std::numeric_limits<long double>::min())); |
| test_termination_condition(STR("}"), A(std::numeric_limits<long double>::max())); |
| } |
| |
| // The results of inf and nan may differ from the result of to_chars. |
| test_termination_condition(STR("}"), A(-std::numeric_limits<A>::infinity()), STR("-inf")); |
| test_termination_condition(STR("}"), A(std::numeric_limits<A>::infinity()), STR("inf")); |
| |
| A nan = std::numeric_limits<A>::quiet_NaN(); |
| test_termination_condition(STR("}"), std::copysign(nan, -1.0), STR("-nan")); |
| test_termination_condition(STR("}"), nan, STR("nan")); |
| |
| // TODO FMT Enable long double testing |
| if constexpr (!std::same_as<A, long double>) |
| test_special_values<A, CharT>(); |
| } |
| |
| template <class CharT> |
| void test_all_float_types() { |
| test_float_type<float, CharT>(); |
| test_float_type<double, CharT>(); |
| test_float_type<long double, CharT>(); |
| } |
| |
| int main(int, char**) { |
| test_all_float_types<char>(); |
| #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
| test_all_float_types<wchar_t>(); |
| #endif |
| |
| return 0; |
| } |