diff --git a/CMakeLists.txt b/CMakeLists.txt index 8847f064..4431a8cb 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -1,6 +1,6 @@ cmake_minimum_required(VERSION 3.9) -project(fast_float VERSION 5.3.0 LANGUAGES CXX) +project(fast_float VERSION 6.0.0 LANGUAGES CXX) option(FASTFLOAT_TEST "Enable tests" OFF) if(FASTFLOAT_TEST) enable_testing() diff --git a/CONTRIBUTORS b/CONTRIBUTORS index d27223c2..da1e5d68 100644 --- a/CONTRIBUTORS +++ b/CONTRIBUTORS @@ -7,4 +7,4 @@ Fabio Pellacini Lénárd Szolnoki Jan Pharago Maya Warrier -Taha Khokhar \ No newline at end of file +Taha Khokhar diff --git a/README.md b/README.md index 1ca0b7e0..815a65a0 100644 --- a/README.md +++ b/README.md @@ -4,17 +4,21 @@ [![Ubuntu 22.04 CI (GCC 11)](https://github.com/fastfloat/fast_float/actions/workflows/ubuntu22.yml/badge.svg)](https://github.com/fastfloat/fast_float/actions/workflows/ubuntu22.yml) The fast_float library provides fast header-only implementations for the C++ from_chars -functions for `float` and `double` types. These functions convert ASCII strings representing -decimal values (e.g., `1.3e10`) into binary types. We provide exact rounding (including +functions for `float` and `double` types as well as integer types. These functions convert ASCII strings representing decimal values (e.g., `1.3e10`) into binary types. We provide exact rounding (including round to even). In our experience, these `fast_float` functions many times faster than comparable number-parsing functions from existing C++ standard libraries. -Specifically, `fast_float` provides the following two functions with a C++17-like syntax (the library itself only requires C++11): +Specifically, `fast_float` provides the following two functions to parse floating-point numbers with a C++17-like syntax (the library itself only requires C++11): ```C++ from_chars_result from_chars(const char* first, const char* last, float& value, ...); from_chars_result from_chars(const char* first, const char* last, double& value, ...); ``` +You can also parse integer types: + + + + The return type (`from_chars_result`) is defined as the struct: ```C++ struct from_chars_result { @@ -103,6 +107,43 @@ We support Visual Studio, macOS, Linux, freeBSD. We support big and little endia We assume that the rounding mode is set to nearest (`std::fegetround() == FE_TONEAREST`). + +## Integer types + +You can also parse integer types using different bases (e.g., 2, 10, 16). The following code will +print the number 22250738585072012 three times: + + +```C++ + uint64_t i; + const char str[] = "22250738585072012"; + auto answer = fast_float::from_chars(str, str + strlen(str), i); + if (answer.ec != std::errc()) { + std::cerr << "parsing failure\n"; + return EXIT_FAILURE; + } + std::cout << "parsed the number "<< i << std::endl; + + const char binstr[] = "1001111000011001110110111001001010110100111000110001100"; + + answer = fast_float::from_chars(binstr, binstr + strlen(binstr), i, 2); + if (answer.ec != std::errc()) { + std::cerr << "parsing failure\n"; + return EXIT_FAILURE; + } + std::cout << "parsed the number "<< i << std::endl; + + + const char hexstr[] = "4f0cedc95a718c"; + + answer = fast_float::from_chars(hexstr, hexstr + strlen(hexstr), i, 16); + if (answer.ec != std::errc()) { + std::cerr << "parsing failure\n"; + return EXIT_FAILURE; + } + std::cout << "parsed the number "<< i << std::endl; +``` + ## C++20: compile-time evaluation (constexpr) In C++20, you may use `fast_float::from_chars` to parse strings @@ -264,7 +305,7 @@ The fast_float library provides a performance similar to that of the [fast_doubl ## Users -The fast_float library is used by [Apache Arrow](https://github.com/apache/arrow/pull/8494) where it multiplied the number parsing speed by two or three times. It is also used by [Yandex ClickHouse](https://github.com/ClickHouse/ClickHouse) and by [Google Jsonnet](https://github.com/google/jsonnet). +The fast_float library is used by [Apache Arrow](https://github.com/apache/arrow/pull/8494) where it multiplied the number parsing speed by two or three times. It is also used by [ClickHouse](https://github.com/ClickHouse/ClickHouse) and by [Google Jsonnet](https://github.com/google/jsonnet). It is part of GCC (as of GCC 12). It is part of WebKit (Safari). ## How fast is it? @@ -330,7 +371,11 @@ the command line help. You may directly download automatically generated single-header files: -https://github.com/fastfloat/fast_float/releases/download/v5.3.0/fast_float.h +https://github.com/fastfloat/fast_float/releases/download/v6.0.0/fast_float.h + +## RFC 7159 + +If you need support for RFC 7159 (JSON standard), you may want to consider using the [fast_double_parser](https://github.com/lemire/fast_double_parser/) library instead. ## Credit diff --git a/include/fast_float/ascii_number.h b/include/fast_float/ascii_number.h index d18e3d53..5d3eac9d 100644 --- a/include/fast_float/ascii_number.h +++ b/include/fast_float/ascii_number.h @@ -5,6 +5,7 @@ #include #include #include +#include #include #include "float_common.h" @@ -115,7 +116,7 @@ FASTFLOAT_SIMD_RESTORE_WARNINGS #if defined(_MSC_VER) && _MSC_VER <= 1900 template #else -template ())> +template ()) = 0> #endif // dummy for compile uint64_t simd_read8_to_u64(UC const*) { @@ -223,7 +224,7 @@ FASTFLOAT_SIMD_RESTORE_WARNINGS #if defined(_MSC_VER) && _MSC_VER <= 1900 template #else -template ())> +template ()) = 0> #endif // dummy for compile bool simd_parse_if_eight_digits_unrolled(UC const*, uint64_t&) { @@ -231,7 +232,7 @@ bool simd_parse_if_eight_digits_unrolled(UC const*, uint64_t&) { } -template ::value)> +template ::value) = 0> fastfloat_really_inline FASTFLOAT_CONSTEXPR20 void loop_parse_if_eight_digits(const UC*& p, const UC* const pend, uint64_t& i) { if (!has_simd_opt()) { @@ -439,6 +440,106 @@ parsed_number_string_t parse_number_string(UC const *p, UC const * pend, par return answer; } +template +fastfloat_really_inline FASTFLOAT_CONSTEXPR20 +from_chars_result_t parse_int_string(UC const* p, UC const* pend, T& value, int base) +{ + from_chars_result_t answer; + + UC const* const first = p; + + bool negative = (*p == UC('-')); + if (!std::is_signed::value && negative) { + answer.ec = std::errc::invalid_argument; + answer.ptr = first; + return answer; + } +#ifdef FASTFLOAT_ALLOWS_LEADING_PLUS // disabled by default + if ((*p == UC('-')) || (*p == UC('+'))) { +#else + if (*p == UC('-')) { +#endif + ++p; + } + + UC const* const start_num = p; + while (*p == UC('0')) { + ++p; + } + const bool has_leading_zeros = p > start_num; + + UC const* const start_digits = p; + + uint64_t i = 0; + if (base == 10) { + loop_parse_if_eight_digits(p, pend, i); // use SIMD if possible + } + while (p != pend) { + uint8_t digit = ch_to_digit(*p); + if (digit >= base) { + break; + } + i = uint64_t(base) * i + digit; // might overflow, check this later + p++; + } + + size_t digit_count = size_t(p - start_digits); + + if (digit_count == 0) { + if (has_leading_zeros) { + value = 0; + answer.ec = std::errc(); + answer.ptr = p; + } + else { + answer.ec = std::errc::invalid_argument; + answer.ptr = first; + } + return answer; + } + + answer.ptr = p; + + // check u64 overflow + size_t max_digits = max_digits_u64(base); + if (digit_count > max_digits) { + answer.ec = std::errc::result_out_of_range; + return answer; + } + // this check can be eliminated for all other types, but they will all require a max_digits(base) equivalent + if (digit_count == max_digits && i < min_safe_u64(base)) { + answer.ec = std::errc::result_out_of_range; + return answer; + } + + // check other types overflow + if (!std::is_same::value) { + if (i > uint64_t(std::numeric_limits::max()) + uint64_t(negative)) { + answer.ec = std::errc::result_out_of_range; + return answer; + } + } + + if (negative) { +#ifdef FASTFLOAT_VISUAL_STUDIO +#pragma warning(push) +#pragma warning(disable: 4146) +#endif + // this weird workaround is required because: + // - converting unsigned to signed when its value is greater than signed max is UB pre-C++23. + // - reinterpret_casting (~i + 1) would work, but it is not constexpr + // this is always optimized into a neg instruction. + value = T(-std::numeric_limits::max() - T(i - std::numeric_limits::max())); +#ifdef FASTFLOAT_VISUAL_STUDIO +#pragma warning(pop) +#endif + } + else { value = T(i); } + + answer.ec = std::errc(); + return answer; +} + } // namespace fast_float #endif diff --git a/include/fast_float/fast_float.h b/include/fast_float/fast_float.h index 04efa877..9b1b9b4f 100644 --- a/include/fast_float/fast_float.h +++ b/include/fast_float/fast_float.h @@ -24,7 +24,7 @@ namespace fast_float { * to determine whether we allow the fixed point and scientific notation respectively. * The default is `fast_float::chars_format::general` which allows both `fixed` and `scientific`. */ -template +template())> FASTFLOAT_CONSTEXPR20 from_chars_result_t from_chars(UC const * first, UC const * last, T &value, chars_format fmt = chars_format::general) noexcept; @@ -36,6 +36,12 @@ template FASTFLOAT_CONSTEXPR20 from_chars_result_t from_chars_advanced(UC const * first, UC const * last, T &value, parse_options_t options) noexcept; +/** +* from_chars for integer types. +*/ +template ())> +FASTFLOAT_CONSTEXPR20 +from_chars_result_t from_chars(UC const * first, UC const * last, T& value, int base = 10) noexcept; } // namespace fast_float #include "parse_number.h" diff --git a/include/fast_float/float_common.h b/include/fast_float/float_common.h index d693dc3b..a7dfac09 100644 --- a/include/fast_float/float_common.h +++ b/include/fast_float/float_common.h @@ -134,7 +134,7 @@ using parse_options = parse_options_t; #define FASTFLOAT_NEON 1 #endif -#if defined(FASTFLOAT_SSE2) || defined(FASTFLOAT_ARM64) +#if defined(FASTFLOAT_SSE2) || defined(FASTFLOAT_NEON) #define FASTFLOAT_HAS_SIMD 1 #endif @@ -173,7 +173,7 @@ using parse_options = parse_options_t; // rust style `try!()` macro, or `?` operator #define FASTFLOAT_TRY(x) { if (!(x)) return false; } -#define FASTFLOAT_ENABLE_IF(...) typename std::enable_if<(__VA_ARGS__), int>::type = 0 +#define FASTFLOAT_ENABLE_IF(...) typename std::enable_if<(__VA_ARGS__), int>::type namespace fast_float { @@ -186,6 +186,20 @@ fastfloat_really_inline constexpr bool cpp20_and_in_constexpr() { #endif } +template +fastfloat_really_inline constexpr bool is_supported_float_type() { + return std::is_same::value || std::is_same::value; +} + +template +fastfloat_really_inline constexpr bool is_supported_char_type() { + return + std::is_same::value || + std::is_same::value || + std::is_same::value || + std::is_same::value; +} + // Compares two ASCII strings in a case insensitive manner. template inline FASTFLOAT_CONSTEXPR14 bool @@ -270,10 +284,10 @@ uint64_t umul128_generic(uint64_t ab, uint64_t cd, uint64_t *hi) { uint64_t ad = emulu((uint32_t)(ab >> 32), (uint32_t)cd); uint64_t bd = emulu((uint32_t)ab, (uint32_t)cd); uint64_t adbc = ad + emulu((uint32_t)ab, (uint32_t)(cd >> 32)); - uint64_t adbc_carry = !!(adbc < ad); + uint64_t adbc_carry = (uint64_t)(adbc < ad); uint64_t lo = bd + (adbc << 32); *hi = emulu((uint32_t)(ab >> 32), (uint32_t)(cd >> 32)) + (adbc >> 32) + - (adbc_carry << 32) + !!(lo < bd); + (adbc_carry << 32) + (uint64_t)(lo < bd); return lo; } @@ -674,6 +688,69 @@ constexpr char32_t const * str_const_inf() { return U"infinity"; } + + +template +struct int_luts { + static constexpr uint8_t chdigit[] = { + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 255, 255, 255, 255, 255, 255, + 255, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, + 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 255, 255, 255, 255, 255, + 255, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, + 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 + }; + + static constexpr size_t maxdigits_u64[] = { + 64, 41, 32, 28, 25, 23, 22, 21, + 20, 19, 18, 18, 17, 17, 16, 16, + 16, 16, 15, 15, 15, 15, 14, 14, + 14, 14, 14, 14, 14, 13, 13, 13, + 13, 13, 13 + }; + + static constexpr uint64_t min_safe_u64[] = { + 9223372036854775808ull, 12157665459056928801ull, 4611686018427387904, 7450580596923828125, 4738381338321616896, + 3909821048582988049, 9223372036854775808ull, 12157665459056928801ull, 10000000000000000000ull, 5559917313492231481, + 2218611106740436992, 8650415919381337933, 2177953337809371136, 6568408355712890625, 1152921504606846976, + 2862423051509815793, 6746640616477458432, 15181127029874798299ull, 1638400000000000000, 3243919932521508681, + 6221821273427820544, 11592836324538749809ull, 876488338465357824, 1490116119384765625, 2481152873203736576, + 4052555153018976267, 6502111422497947648, 10260628712958602189ull, 15943230000000000000ull, 787662783788549761, + 1152921504606846976, 1667889514952984961, 2386420683693101056, 3379220508056640625, 4738381338321616896 + }; +}; + +template +constexpr uint8_t int_luts::chdigit[]; + +template +constexpr size_t int_luts::maxdigits_u64[]; + +template +constexpr uint64_t int_luts::min_safe_u64[]; + +template +fastfloat_really_inline +constexpr uint8_t ch_to_digit(UC c) { return int_luts<>::chdigit[static_cast(c)]; } + +fastfloat_really_inline +constexpr size_t max_digits_u64(int base) { return int_luts<>::maxdigits_u64[base - 2]; } + +// If a u64 is exactly max_digits_u64() in length, this is +// the value below which it has definitely overflowed. +fastfloat_really_inline +constexpr uint64_t min_safe_u64(int base) { return int_luts<>::min_safe_u64[base - 2]; } + } // namespace fast_float #endif diff --git a/include/fast_float/parse_number.h b/include/fast_float/parse_number.h index 1d972abb..04d77387 100644 --- a/include/fast_float/parse_number.h +++ b/include/fast_float/parse_number.h @@ -186,7 +186,6 @@ struct from_chars_caller template -FASTFLOAT_CONSTEXPR20 from_chars_result_t from_chars(UC const * first, UC const * last, T &value, chars_format fmt /*= chars_format::general*/) noexcept { return from_chars_caller::call(first, last, value, parse_options_t(fmt)); @@ -197,11 +196,8 @@ FASTFLOAT_CONSTEXPR20 from_chars_result_t from_chars_advanced(UC const * first, UC const * last, T &value, parse_options_t options) noexcept { - static_assert (std::is_same::value || std::is_same::value, "only float and double are supported"); - static_assert (std::is_same::value || - std::is_same::value || - std::is_same::value || - std::is_same::value , "only char, wchar_t, char16_t and char32_t are supported"); + static_assert (is_supported_float_type(), "only float and double are supported"); + static_assert (is_supported_char_type(), "only char, wchar_t, char16_t and char32_t are supported"); from_chars_result_t answer; #ifdef FASTFLOAT_SKIP_WHITE_SPACE // disabled by default @@ -284,6 +280,27 @@ from_chars_result_t from_chars_advanced(UC const * first, UC const * last, return answer; } + +template +FASTFLOAT_CONSTEXPR20 +from_chars_result_t from_chars(UC const* first, UC const* last, T& value, int base) noexcept +{ + static_assert (is_supported_char_type(), "only char, wchar_t, char16_t and char32_t are supported"); + + from_chars_result_t answer; +#ifdef FASTFLOAT_SKIP_WHITE_SPACE // disabled by default + while ((first != last) && fast_float::is_space(uint8_t(*first))) { + first++; + } +#endif + if (first == last || base < 2 || base > 36) { + answer.ec = std::errc::invalid_argument; + answer.ptr = first; + return answer; + } + return parse_int_string(first, last, value, base); +} + } // namespace fast_float #endif diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt index 7bf9e835..ed75f1d8 100644 --- a/tests/CMakeLists.txt +++ b/tests/CMakeLists.txt @@ -5,16 +5,18 @@ cmake_minimum_required(VERSION 3.11 FATAL_ERROR) include(FetchContent) option(SYSTEM_DOCTEST "Use system copy of doctest" OFF) +option(FASTFLOAT_SUPPLEMENTAL_TESTS "Run supplemental tests" ON) if (NOT SYSTEM_DOCTEST) FetchContent_Declare(doctest GIT_REPOSITORY https://github.com/onqtam/doctest.git GIT_TAG v2.4.10) endif() -FetchContent_Declare(supplemental_test_files - GIT_REPOSITORY https://github.com/fastfloat/supplemental_test_files.git - GIT_TAG origin/main) - +if (FASTFLOAT_SUPPLEMENTAL_TESTS) + FetchContent_Declare(supplemental_test_files + GIT_REPOSITORY https://github.com/fastfloat/supplemental_test_files.git + GIT_TAG origin/main) +endif() # FetchContent_MakeAvailable() was only introduced in 3.14 @@ -27,15 +29,19 @@ if (NOT SYSTEM_DOCTEST) add_subdirectory(${doctest_SOURCE_DIR} ${doctest_BINARY_DIR}) endif() endif() -FetchContent_GetProperties(supplemental_test_files) -if(NOT supplemental_test_files_POPULATED) - message(STATUS "Tests enabled. Retrieving test files.") - FetchContent_Populate(supplemental_test_files) - message(STATUS "Test files retrieved.") - add_subdirectory(${supplemental_test_files_SOURCE_DIR} ${supplemental_test_files_BINARY_DIR}) -endif() + add_library(supplemental-data INTERFACE) -target_compile_definitions(supplemental-data INTERFACE SUPPLEMENTAL_TEST_DATA_DIR="${supplemental_test_files_BINARY_DIR}/data") +if (FASTFLOAT_SUPPLEMENTAL_TESTS) + FetchContent_GetProperties(supplemental_test_files) + if(NOT supplemental_test_files_POPULATED) + message(STATUS "Supplemental tests enabled. Retrieving test files.") + FetchContent_Populate(supplemental_test_files) + message(STATUS "Supplemental test files retrieved.") + add_subdirectory(${supplemental_test_files_SOURCE_DIR} ${supplemental_test_files_BINARY_DIR}) + endif() + target_compile_definitions(supplemental-data INTERFACE SUPPLEMENTAL_TEST_DATA_DIR="${supplemental_test_files_BINARY_DIR}/data") +endif() + function(fast_float_add_cpp_test TEST_NAME) add_executable(${TEST_NAME} ${TEST_NAME}.cpp) if(CMAKE_CROSSCOMPILING) @@ -67,11 +73,14 @@ if (FASTFLOAT_CONSTEXPR_TESTS) else() target_compile_features(basictest PRIVATE cxx_std_17) endif() +if (FASTFLOAT_SUPPLEMENTAL_TESTS) + target_compile_definitions(basictest PRIVATE FASTFLOAT_SUPPLEMENTAL_TESTS) +endif() fast_float_add_cpp_test(long_test) fast_float_add_cpp_test(powersoffive_hardround) fast_float_add_cpp_test(string_test) - +fast_float_add_cpp_test(fast_int) fast_float_add_cpp_test(json_fmt) fast_float_add_cpp_test(fortran) diff --git a/tests/basictest.cpp b/tests/basictest.cpp index 3d7f753f..59f52ae8 100644 --- a/tests/basictest.cpp +++ b/tests/basictest.cpp @@ -246,6 +246,7 @@ TEST_CASE("parse_negative_zero") { CHECK(float64_parsed == 0x8000'0000'0000'0000); } +#if FASTFLOAT_SUPPLEMENTAL_TESTS // C++ 17 because it is otherwise annoying to browse all files in a directory. // We also only run these tests on little endian systems. #if (FASTFLOAT_CPLUSPLUS >= 201703L) && (FASTFLOAT_IS_BIG_ENDIAN == 0) && !defined(FASTFLOAT_ODDPLATFORM) @@ -336,6 +337,7 @@ TEST_CASE("supplemental") { } } #endif +#endif TEST_CASE("leading_zeroes") { constexpr const uint64_t bit = 1; @@ -825,6 +827,7 @@ TEST_CASE("64bit.inf") { } TEST_CASE("64bit.general") { + verify("0.95000000000000000000",0.95); verify("22250738585072012e-324",0x1p-1022); /* limit between normal and subnormal*/ verify("-22250738585072012e-324",-0x1p-1022); /* limit between normal and subnormal*/ verify("-1e-999", -0.0, std::errc::result_out_of_range); diff --git a/tests/fast_int.cpp b/tests/fast_int.cpp new file mode 100644 index 00000000..85dbca88 --- /dev/null +++ b/tests/fast_int.cpp @@ -0,0 +1,752 @@ +#include +#include +#include +#include +#include +#include "fast_float/fast_float.h" +#include + +/* +all tests conducted are to check fast_float::from_chars functionality with int and unsigned +test cases include: +int basic tests - numbers only, numbers with strings behind, decimals, negative numbers +unsigned basic tests - numbers only, numbers with strings behind, decimals +int invalid tests - strings only, strings with numbers behind, space in front of number, plus sign in front of number +unsigned invalid tests - strings only, strings with numbers behind, space in front of number, plus/minus sign in front of number +int out of range tests - numbers exceeding int bit size for 8, 16, 32, and 64 bits +unsigned out of range tests - numbers exceeding unsigned bit size 8, 16, 32, and 64 bits +int pointer tests - points to first character that is not recognized as int +unsigned pointer tests - points to first character that is not recognized as unsigned +int/unsigned base 2 tests - numbers are converted from binary to decimal +octal tests - numbers are converted from octal to decimal +hex tests - numbers are converted from hex to decimal (Note: 0x and 0X are considered invalid) +invalid base tests - any base not within 2-36 is invalid +out of range base tests - numbers exceeding int/unsigned bit size after converted from base (Note: only 64 bit int and unsigned are tested) +within range base tests - max/min numbers are still within int/unsigned bit size after converted from base (Note: only 64 bit int and unsigned are tested) +leading zeros tests - ignores all zeroes in front of valid number after converted from base +*/ + +int main() +{ + + // int basic test + const std::vector int_basic_test_expected { 0, 10, -40, 1001, 9 }; + const std::vector int_basic_test { "0", "10 ", "-40", "1001 with text", "9.999" }; + + for (std::size_t i = 0; i < int_basic_test.size(); ++i) + { + const auto& f = int_basic_test[i]; + int result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result); + + if (answer.ec != std::errc()) { + if (answer.ec == std::errc::invalid_argument) { + std::cerr << "could not convert to int for input: " << std::quoted(f) << " because of invalid arguement" << std::endl; + } + else if (answer.ec == std::errc::result_out_of_range) { + std::cerr << "could not convert to int for input: " << std::quoted(f) << " because it's out of range" << std::endl; + } + else { + std::cerr << "could not convert to int for input: " << std::quoted(f) << " because of an unknown error" << std::endl; + } + return EXIT_FAILURE; + } + else if (result != int_basic_test_expected[i]) { + std::cerr << "result " << std::quoted(f) << " did not match with expected int: " << int_basic_test_expected[i] << std::endl; + return EXIT_FAILURE; + } + } + + // unsigned basic test + const std::vector unsigned_basic_test_expected { 0, 10, 1001, 9 }; + const std::vector unsigned_basic_test { "0", "10 ", "1001 with text", "9.999" }; + + for (std::size_t i = 0; i < unsigned_basic_test.size(); ++i) + { + const auto& f = unsigned_basic_test[i]; + unsigned result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result); + if (answer.ec != std::errc()) { + std::cerr << "could not convert to unsigned for input: " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + else if (result != unsigned_basic_test_expected[i]) { + std::cerr << "result " << std::quoted(f) << " did not match with expected unsigned: " << unsigned_basic_test_expected[i] << std::endl; + return EXIT_FAILURE; + } + } + + // int invalid error test + const std::vector int_invalid_argument_test{ "text", "text with 1002", "+50", " 50" }; + + for (std::size_t i = 0; i < int_invalid_argument_test.size(); ++i) + { + const auto& f = int_invalid_argument_test[i]; + int result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result); + if (answer.ec != std::errc::invalid_argument) { + std::cerr << "expected error should be 'invalid_argument' for: " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + } + + // unsigned invalid error test + const std::vector unsigned_invalid_argument_test{ "text", "text with 1002", "+50", " 50", "-50" }; + + for (std::size_t i = 0; i < unsigned_invalid_argument_test.size(); ++i) + { + const auto& f = unsigned_invalid_argument_test[i]; + unsigned result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result); + if (answer.ec != std::errc::invalid_argument) { + std::cerr << "expected error should be 'invalid_argument' for: " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + } + + // int out of range error test #1 (8 bit) + const std::vector int_out_of_range_test_1{ "2000000000000000000000", "128", "-129"}; + + for (std::size_t i = 0; i < int_out_of_range_test_1.size(); ++i) + { + const auto& f = int_out_of_range_test_1[i]; + int8_t result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result); + if (answer.ec != std::errc::result_out_of_range) { + std::cerr << "expected error for should be 'result_out_of_range': " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + } + + // int out of range error test #2 (16 bit) + const std::vector int_out_of_range_test_2{ "2000000000000000000000", "32768", "-32769"}; + + for (std::size_t i = 0; i < int_out_of_range_test_2.size(); ++i) + { + const auto& f = int_out_of_range_test_2[i]; + int16_t result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result); + if (answer.ec != std::errc::result_out_of_range) { + std::cerr << "expected error for should be 'result_out_of_range': " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + } + + // int out of range error test #3 (32 bit) + const std::vector int_out_of_range_test_3{ "2000000000000000000000", "2147483648", "-2147483649"}; + + for (std::size_t i = 0; i < int_out_of_range_test_3.size(); ++i) + { + const auto& f = int_out_of_range_test_3[i]; + int32_t result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result); + if (answer.ec != std::errc::result_out_of_range) { + std::cerr << "expected error for should be 'result_out_of_range': " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + } + + // int out of range error test #4 (64 bit) + const std::vector int_out_of_range_test_4{ "2000000000000000000000", "9223372036854775808", "-9223372036854775809"}; + + for (std::size_t i = 0; i < int_out_of_range_test_4.size(); ++i) + { + const auto& f = int_out_of_range_test_4[i]; + int64_t result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result); + if (answer.ec != std::errc::result_out_of_range) { + std::cerr << "expected error for should be 'result_out_of_range': " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + } + + // unsigned out of range error test #1 (8 bit) + const std::vector unsigned_out_of_range_test_1{ "2000000000000000000000", "256" }; + + for (std::size_t i = 0; i < unsigned_out_of_range_test_1.size(); ++i) + { + const auto& f = unsigned_out_of_range_test_1[i]; + uint8_t result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result); + if (answer.ec != std::errc::result_out_of_range) { + std::cerr << "expected error for should be 'result_out_of_range': " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + } + + // unsigned out of range error test #2 (16 bit) + const std::vector unsigned_out_of_range_test_2{ "2000000000000000000000", "65536" }; + + for (std::size_t i = 0; i < unsigned_out_of_range_test_2.size(); ++i) + { + const auto& f = unsigned_out_of_range_test_2[i]; + uint16_t result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result); + if (answer.ec != std::errc::result_out_of_range) { + std::cerr << "expected error for should be 'result_out_of_range': " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + } + + // unsigned out of range error test #3 (32 bit) + const std::vector unsigned_out_of_range_test_3{ "2000000000000000000000", "4294967296" }; + + for (std::size_t i = 0; i < unsigned_out_of_range_test_3.size(); ++i) + { + const auto& f = unsigned_out_of_range_test_3[i]; + uint32_t result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result); + if (answer.ec != std::errc::result_out_of_range) { + std::cerr << "expected error for should be 'result_out_of_range': " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + } + + // unsigned out of range error test #4 (64 bit) + const std::vector unsigned_out_of_range_test_4{ "2000000000000000000000", "18446744073709551616" }; + + for (std::size_t i = 0; i < unsigned_out_of_range_test_4.size(); ++i) + { + const auto& f = unsigned_out_of_range_test_4[i]; + uint64_t result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result); + if (answer.ec != std::errc::result_out_of_range) { + std::cerr << "expected error for should be 'result_out_of_range': " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + } + + // int pointer test #1 (only numbers) + const std::vector int_pointer_test_1 { "0", "010", "-40" }; + + for (std::size_t i = 0; i < int_pointer_test_1.size(); ++i) + { + const auto& f = int_pointer_test_1[i]; + int result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result); + if (answer.ec != std::errc()) { + std::cerr << "could not convert to int for input: " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + else if (strcmp(answer.ptr, "") != 0) { + std::cerr << "ptr of result " << std::quoted(f) << " did not match with expected ptr: " << std::quoted("") << std::endl; + return EXIT_FAILURE; + } + } + + // int pointer test #2 (string behind numbers) + const std::string int_pointer_test_2 = "1001 with text"; + + const auto& f2 = int_pointer_test_2; + int result2; + auto answer2 = fast_float::from_chars(f2.data(), f2.data() + f2.size(), result2); + if (strcmp(answer2.ptr, " with text") != 0) { + std::cerr << "ptr of result " << std::quoted(f2) << " did not match with expected ptr: " << std::quoted(" with text") << std::endl; + return EXIT_FAILURE; + } + + // int pointer test #3 (string with newline behind numbers) + const std::string int_pointer_test_3 = "1001 with text\n"; + + const auto& f3 = int_pointer_test_3; + int result3; + auto answer3 = fast_float::from_chars(f3.data(), f3.data() + f3.size(), result3); + if (strcmp(answer3.ptr, " with text\n") != 0) { + std::cerr << "ptr of result " << std::quoted(f3) << " did not match with expected ptr: " << std::quoted(" with text") << std::endl; + return EXIT_FAILURE; + } + + // int pointer test #4 (float) + const std::string int_pointer_test_4 = "9.999"; + + const auto& f4 = int_pointer_test_4; + int result4; + auto answer4 = fast_float::from_chars(f4.data(), f4.data() + f4.size(), result4); + if (strcmp(answer4.ptr, ".999") != 0) { + std::cerr << "ptr of result " << std::quoted(f4) << " did not match with expected ptr: " << std::quoted(".999") << std::endl; + return EXIT_FAILURE; + } + + // int pointer test #5 (invalid int) + const std::string int_pointer_test_5 = "+50"; + + const auto& f5 = int_pointer_test_5; + int result5; + auto answer5 = fast_float::from_chars(f5.data(), f5.data() + f5.size(), result5); + if (strcmp(answer5.ptr, "+50") != 0) { + std::cerr << "ptr of result " << std::quoted(f5) << " did not match with expected ptr: " << std::quoted("+50") << std::endl; + return EXIT_FAILURE; + } + + // unsigned pointer test #2 (string behind numbers) + const std::string unsigned_pointer_test_1 = "1001 with text"; + + const auto& f6 = unsigned_pointer_test_1; + unsigned result6; + auto answer6 = fast_float::from_chars(f6.data(), f6.data() + f6.size(), result6); + if (strcmp(answer6.ptr, " with text") != 0) { + std::cerr << "ptr of result " << std::quoted(f6) << " did not match with expected ptr: " << std::quoted(" with text") << std::endl; + return EXIT_FAILURE; + } + + // unsigned pointer test #2 (invalid unsigned) + const std::string unsigned_pointer_test_2 = "-50"; + + const auto& f7 = unsigned_pointer_test_2; + unsigned result7; + auto answer7 = fast_float::from_chars(f7.data(), f7.data() + f7.size(), result7); + if (strcmp(answer7.ptr, "-50") != 0) { + std::cerr << "ptr of result " << std::quoted(f7) << " did not match with expected ptr: " << std::quoted("-50") << std::endl; + return EXIT_FAILURE; + } + + // int base 2 test + const std::vector int_base_2_test_expected { 0, 1, 4, 2, -1 }; + const std::vector int_base_2_test { "0", "1", "100", "010", "-1" }; + + for (std::size_t i = 0; i < int_base_2_test.size(); ++i) + { + const auto& f = int_base_2_test[i]; + int result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result, 2); + if (answer.ec != std::errc()) { + std::cerr << "could not convert to int for input: " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + else if (result != int_base_2_test_expected[i]) { + std::cerr << "result " << std::quoted(f) << " did not match with expected int: " << int_base_2_test_expected[i] << std::endl; + return EXIT_FAILURE; + } + } + + // unsigned base 2 test + const std::vector unsigned_base_2_test_expected { 0, 1, 4, 2 }; + const std::vector unsigned_base_2_test { "0", "1", "100", "010" }; + + for (std::size_t i = 0; i < unsigned_base_2_test.size(); ++i) + { + const auto& f = unsigned_base_2_test[i]; + unsigned result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result, 2); + if (answer.ec != std::errc()) { + std::cerr << "could not convert to unsigned for input: " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + else if (result != unsigned_base_2_test_expected[i]) { + std::cerr << "result " << std::quoted(f) << " did not match with expected unsigned: " << unsigned_base_2_test_expected[i] << std::endl; + return EXIT_FAILURE; + } + } + + // int invalid error base 2 test + const std::vector int_invalid_argument_base_2_test{ "2", "A", "-2" }; + + for (std::size_t i = 0; i < int_invalid_argument_base_2_test.size(); ++i) + { + const auto& f = int_invalid_argument_base_2_test[i]; + int result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result, 2); + if (answer.ec != std::errc::invalid_argument) { + std::cerr << "expected error should be 'invalid_argument' for: " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + } + + // unsigned invalid error base 2 test + const std::vector unsigned_invalid_argument_base_2_test{ "2", "A", "-1", "-2" }; + + for (std::size_t i = 0; i < unsigned_invalid_argument_base_2_test.size(); ++i) + { + const auto& f = unsigned_invalid_argument_base_2_test[i]; + unsigned result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result, 2); + if (answer.ec != std::errc::invalid_argument) { + std::cerr << "expected error should be 'invalid_argument' for: " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + } + + // octal test + const std::vector base_octal_test_expected {0, 1, 7, 8, 9}; + const std::vector base_octal_test { "0", "1", "07", "010", "0011" }; + + for (std::size_t i = 0; i < base_octal_test.size(); ++i) + { + const auto& f = base_octal_test[i]; + int result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result, 8); + if (answer.ec != std::errc()) { + std::cerr << "could not convert to int for input: " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + else if (result != base_octal_test_expected[i]) { + std::cerr << "result " << std::quoted(f) << " did not match with expected int: " << base_octal_test_expected[i] << std::endl; + return EXIT_FAILURE; + } + } + + // hex test + const std::vector base_hex_test_expected { 0, 1, 15, 31, 0, 16}; + const std::vector base_hex_test { "0", "1", "F", "01f", "0x11", "10X11" }; + + for (std::size_t i = 0; i < base_hex_test.size(); ++i) + { + const auto& f = base_hex_test[i]; + int result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result, 16); + if (answer.ec != std::errc()) { + std::cerr << "could not convert to int for input: " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + else if (result != base_hex_test_expected[i]) { + std::cerr << "result " << std::quoted(f) << " did not match with expected int: " << base_hex_test_expected[i] << std::endl; + return EXIT_FAILURE; + } + } + + // invalid base test #1 (-1) + const std::vector invalid_base_test_1 { "0", "1", "-1", "F", "10Z" }; + + for (std::size_t i = 0; i < invalid_base_test_1.size(); ++i) + { + const auto& f = invalid_base_test_1[i]; + int result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result, -1); + if (answer.ec != std::errc::invalid_argument) { + std::cerr << "expected error should be 'invalid_argument' for: " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + } + + // invalid base test #2 (37) + const std::vector invalid_base_test_2 { "0", "1", "F", "Z", "10Z" }; + + for (std::size_t i = 0; i < invalid_base_test_2.size(); ++i) + { + const auto& f = invalid_base_test_2[i]; + int result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result, 37); + if (answer.ec != std::errc::invalid_argument) { + std::cerr << "expected error should be 'invalid_argument' for: " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + } + + // int out of range error base test (64 bit) + const std::vector int_out_of_range_base_test { "1000000000000000000000000000000000000000000000000000000000000000", + "-1000000000000000000000000000000000000000000000000000000000000001", + "2021110011022210012102010021220101220222", + "-2021110011022210012102010021220101221000", + "20000000000000000000000000000000", + "-20000000000000000000000000000001", + "1104332401304422434310311213", + "-1104332401304422434310311214", + "1540241003031030222122212", + "-1540241003031030222122213", + "22341010611245052052301", + "-22341010611245052052302", + "1000000000000000000000", + "-1000000000000000000001", + "67404283172107811828", + "-67404283172107811830", + "9223372036854775808", + "-9223372036854775809", + "1728002635214590698", + "-1728002635214590699", + "41A792678515120368", + "-41A792678515120369", + "10B269549075433C38", + "-10B269549075433C39", + "4340724C6C71DC7A8", + "-4340724C6C71DC7A9", + "160E2AD3246366808", + "-160E2AD3246366809", + "8000000000000000", + "-8000000000000001", + "33D3D8307B214009", + "-33D3D8307B21400A", + "16AGH595DF825FA8", + "-16AGH595DF825FA9", + "BA643DCI0FFEEHI", + "-BA643DCI0FFEEI0", + "5CBFJIA3FH26JA8", + "-5CBFJIA3FH26JA9", + "2HEICIIIE82DH98", + "-2HEICIIIE82DH99", + "1ADAIBB21DCKFA8", + "-1ADAIBB21DCKFA9", + "I6K448CF4192C3", + "-I6K448CF4192C4", + "ACD772JNC9L0L8", + "-ACD772JNC9L0L9", + "64IE1FOCNN5G78", + "-64IE1FOCNN5G79", + "3IGOECJBMCA688", + "-3IGOECJBMCA689", + "27C48L5B37OAOQ", + "-27C48L5B37OAP0", + "1BK39F3AH3DMQ8", + "-1BK39F3AH3DMQ9", + "Q1SE8F0M04ISC", + "-Q1SE8F0M04ISD", + "HAJPPBC1FC208", + "-HAJPPBC1FC209", + "BM03I95HIA438", + "-BM03I95HIA439", + "8000000000000", + "-8000000000001", + "5HG4CK9JD4U38", + "-5HG4CK9JD4U39", + "3TDTK1V8J6TPQ", + "-3TDTK1V8J6TPR", + "2PIJMIKEXRXP8", + "-2PIJMIKEXRXP9", + "1Y2P0IJ32E8E8", + "-1Y2P0IJ32E8E9" }; + + for (std::size_t i = 0; i < int_out_of_range_base_test.size(); ++i) + { + const auto& f = int_out_of_range_base_test[i]; + int64_t result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result, int(2 + (i / 2))); + if (answer.ec != std::errc::result_out_of_range) { + std::cerr << "expected error for should be 'result_out_of_range': " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + } + + // unsigned out of range error base test (64 bit) + const std::vector unsigned_out_of_range_base_test { "10000000000000000000000000000000000000000000000000000000000000000", + "11112220022122120101211020120210210211221", + "100000000000000000000000000000000", + "2214220303114400424121122431", + "3520522010102100444244424", + "45012021522523134134602", + "2000000000000000000000", + "145808576354216723757", + "18446744073709551616", + "335500516A429071285", + "839365134A2A240714", + "219505A9511A867B73", + "8681049ADB03DB172", + "2C1D56B648C6CD111", + "10000000000000000", + "67979G60F5428011", + "2D3FGB0B9CG4BD2G", + "141C8786H1CCAAGH", + "B53BJH07BE4DJ0G", + "5E8G4GGG7G56DIG", + "2L4LF104353J8KG", + "1DDH88H2782I516", + "L12EE5FN0JI1IG", + "C9C336O0MLB7EG", + "7B7N2PCNIOKCGG", + "4EO8HFAM6FLLMP", + "2NC6J26L66RHOG", + "1N3RSH11F098RO", + "14L9LKMO30O40G", + "ND075IB45K86G", + "G000000000000", + "B1W8P7J5Q9R6G", + "7ORP63SH4DPHI", + "5G24A25TWKWFG", + "3W5E11264SGSG" }; + int base_unsigned = 2; + for (std::size_t i = 0; i < unsigned_out_of_range_base_test.size(); ++i) + { + const auto& f = unsigned_out_of_range_base_test[i]; + uint64_t result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result, base_unsigned); + if (answer.ec != std::errc::result_out_of_range) { + std::cerr << "expected error for should be 'result_out_of_range': " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + ++base_unsigned; + } + + // just within range base test (64 bit) + const std::vector int_within_range_base_test { "111111111111111111111111111111111111111111111111111111111111111", + "-1000000000000000000000000000000000000000000000000000000000000000", + "2021110011022210012102010021220101220221", + "-2021110011022210012102010021220101220222", + "13333333333333333333333333333333", + "-20000000000000000000000000000000", + "1104332401304422434310311212", + "-1104332401304422434310311213", + "1540241003031030222122211", + "-1540241003031030222122212", + "22341010611245052052300", + "-22341010611245052052301", + "777777777777777777777", + "-1000000000000000000000", + "67404283172107811827", + "-67404283172107811828", + "9223372036854775807", + "-9223372036854775808", + "1728002635214590697", + "-1728002635214590698", + "41A792678515120367", + "-41A792678515120368", + "10B269549075433C37", + "-10B269549075433C38", + "4340724C6C71DC7A7", + "-4340724C6C71DC7A8", + "160E2AD3246366807", + "-160E2AD3246366808", + "7FFFFFFFFFFFFFFF", + "-8000000000000000", + "33D3D8307B214008", + "-33D3D8307B214009", + "16AGH595DF825FA7", + "-16AGH595DF825FA8", + "BA643DCI0FFEEHH", + "-BA643DCI0FFEEHI", + "5CBFJIA3FH26JA7", + "-5CBFJIA3FH26JA8", + "2HEICIIIE82DH97", + "-2HEICIIIE82DH98", + "1ADAIBB21DCKFA7", + "-1ADAIBB21DCKFA8", + "I6K448CF4192C2", + "-I6K448CF4192C3", + "ACD772JNC9L0L7", + "-ACD772JNC9L0L8", + "64IE1FOCNN5G77", + "-64IE1FOCNN5G78", + "3IGOECJBMCA687", + "-3IGOECJBMCA688", + "27C48L5B37OAOP", + "-27C48L5B37OAOQ", + "1BK39F3AH3DMQ7", + "-1BK39F3AH3DMQ8", + "Q1SE8F0M04ISB", + "-Q1SE8F0M04ISC", + "HAJPPBC1FC207", + "-HAJPPBC1FC208", + "BM03I95HIA437", + "-BM03I95HIA438", + "7VVVVVVVVVVVV", + "-8000000000000", + "5HG4CK9JD4U37", + "-5HG4CK9JD4U38", + "3TDTK1V8J6TPP", + "-3TDTK1V8J6TPQ", + "2PIJMIKEXRXP7", + "-2PIJMIKEXRXP8", + "1Y2P0IJ32E8E7", + "-1Y2P0IJ32E8E8" }; + + for (std::size_t i = 0; i < int_within_range_base_test.size(); ++i) + { + const auto& f = int_within_range_base_test[i]; + int64_t result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result, int(2 + (i / 2))); + if (answer.ec != std::errc()) { + std::cerr << "converting " << std::quoted(f) << " to int failed (most likely out of range)" << std::endl; + return EXIT_FAILURE; + } + } + + // unsigned within range base test (64 bit) + const std::vector unsigned_within_range_base_test { "1111111111111111111111111111111111111111111111111111111111111111", + "11112220022122120101211020120210210211220", + "33333333333333333333333333333333", + "2214220303114400424121122430", + "3520522010102100444244423", + "45012021522523134134601", + "1777777777777777777777", + "145808576354216723756", + "18446744073709551615", + "335500516A429071284", + "839365134A2A240713", + "219505A9511A867B72", + "8681049ADB03DB171", + "2C1D56B648C6CD110", + "FFFFFFFFFFFFFFFF", + "67979G60F5428010", + "2D3FGB0B9CG4BD2F", + "141C8786H1CCAAGG", + "B53BJH07BE4DJ0F", + "5E8G4GGG7G56DIF", + "2L4LF104353J8KF", + "1DDH88H2782I515", + "L12EE5FN0JI1IF", + "C9C336O0MLB7EF", + "7B7N2PCNIOKCGF", + "4EO8HFAM6FLLMO", + "2NC6J26L66RHOF", + "1N3RSH11F098RN", + "14L9LKMO30O40F", + "ND075IB45K86F", + "FVVVVVVVVVVVV", + "B1W8P7J5Q9R6F", + "7ORP63SH4DPHH", + "5G24A25TWKWFF", + "3W5E11264SGSF" }; + int base_unsigned2 = 2; + for (std::size_t i = 0; i < unsigned_within_range_base_test.size(); ++i) + { + const auto& f = unsigned_within_range_base_test[i]; + uint64_t result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result, base_unsigned2); + if (answer.ec != std::errc()) { + std::cerr << "converting " << std::quoted(f) << " to unsigned failed (most likely out of range)" << std::endl; + return EXIT_FAILURE; + } + ++base_unsigned2; + } + + // int leading zeros test + const std::vector int_leading_zeros_test { "00000000000000000000000000000000000000000000000000000000000000000000001111110111", + "000000000000000000000000000000000000000000000000001101121", + "000000000000000000000000000000000000000033313", + "00000000000000000000000000000013030", + "0000000000000000000000000000004411", + "0000000000000000000000000000002650", + "0000000000000000000000000000001767", + "0000000000000000000000000000001347", + "0000000000000000000000000000001015", + "00000000000000000000843", + "00000000000000000000707", + "00000000000000000000601", + "00000000000000000000527", + "0000000000000000000047A", + "000000000000000000003F7", + "0000000000000000000038C", + "00000000000000000000327", + "000000000000000000002F8", + "000000000000000000002AF", + "00000000000000000000267", + "00000000000000000000223", + "000000000000000000001L3", + "000000000000000000001I7", + "000000000000000000001FF", + "000000000000000000001D1", + "000000000000000000001AG", + "00000000000000000000187", + "00000000000000000000160", + "0000000000000000000013P", + "0000000000000000000011N", + "00000000000000000000VN", + "00000000000000000000UP", + "00000000000000000000TT", + "00000000000000000000T0", + "00000000000000000000S7" }; + + for (std::size_t i = 0; i < int_leading_zeros_test.size(); ++i) + { + const auto& f = int_leading_zeros_test[i]; + int result; + auto answer = fast_float::from_chars(f.data(), f.data() + f.size(), result, int(i + 2)); + if (answer.ec != std::errc()) { + std::cerr << "could not convert to int for input: " << std::quoted(f) << std::endl; + return EXIT_FAILURE; + } + else if (result != 1015) { + std::cerr << "result " << std::quoted(f) << " did not match with expected int: " << 1015 << std::endl; + return EXIT_FAILURE; + } + } + + return EXIT_SUCCESS; +} \ No newline at end of file