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fast_float/tests/basictest.cpp
Daniel Lemire 95321767ee More verbose error report.
2022-11-16 12:29:46 -05:00

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#define DOCTEST_CONFIG_SUPER_FAST_ASSERTS
#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
#include <doctest/doctest.h>
#include "fast_float/fast_float.h"
#include <cmath>
#include <cstdio>
#include <iomanip>
#include <ios>
#include <limits>
#include <string>
#include <system_error>
#include <cfenv>
#ifndef SUPPLEMENTAL_TEST_DATA_DIR
#define SUPPLEMENTAL_TEST_DATA_DIR "data/"
#endif
#ifndef __cplusplus
#error fastfloat requires a C++ compiler
#endif
#ifndef FASTFLOAT_CPLUSPLUS
#if defined(_MSVC_LANG) && !defined(__clang__)
#define FASTFLOAT_CPLUSPLUS (_MSC_VER == 1900 ? 201103L : _MSVC_LANG)
#else
#define FASTFLOAT_CPLUSPLUS __cplusplus
#endif
#endif
#if defined(__CYGWIN__) || defined(__MINGW32__) || defined(__MINGW64__) || defined(sun) || defined(__sun)
#define FASTFLOAT_ODDPLATFORM 1
#endif
#if defined __has_include
#if __has_include (<filesystem>)
#else
// filesystem is not available
#define FASTFLOAT_ODDPLATFORM 1
#endif
#else
// __has_include is not available
#define FASTFLOAT_ODDPLATFORM 1
#endif
#define iHexAndDec(v) std::hex << "0x" << (v) << " (" << std::dec << (v) << ")"
#define fHexAndDec(v) std::hexfloat << (v) << " (" << std::defaultfloat << (v) << ")"
// 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)
#include <iostream>
#include <filesystem>
#include <charconv>
TEST_CASE("rounds_to_nearest") {
//
// If this function fails, we may be left in a non-standard rounding state.
//
static volatile float fmin = std::numeric_limits<float>::min();
fesetround(FE_UPWARD);
std::cout << "FE_UPWARD: fmin + 1.0f = " << iHexAndDec(fmin + 1.0f) << " 1.0f - fmin = " << iHexAndDec(1.0f - fmin) << std::endl;
CHECK(fegetround() == FE_UPWARD);
CHECK(fast_float::detail::rounds_to_nearest() == false);
fesetround(FE_DOWNWARD);
std::cout << "FE_DOWNWARD: fmin + 1.0f = " << iHexAndDec(fmin + 1.0f) << " 1.0f - fmin = " << iHexAndDec(1.0f - fmin) << std::endl;
CHECK(fegetround() == FE_DOWNWARD);
CHECK(fast_float::detail::rounds_to_nearest() == false);
fesetround(FE_TOWARDZERO);
std::cout << "FE_TOWARDZERO: fmin + 1.0f = " << iHexAndDec(fmin + 1.0f) << " 1.0f - fmin = " << iHexAndDec(1.0f - fmin) << std::endl;
CHECK(fegetround() == FE_TOWARDZERO);
CHECK(fast_float::detail::rounds_to_nearest() == false);
fesetround(FE_TONEAREST);
std::cout << "FE_TONEAREST: fmin + 1.0f = " << iHexAndDec(fmin + 1.0f) << " 1.0f - fmin = " << iHexAndDec(1.0f - fmin) << std::endl;
CHECK(fegetround() == FE_TONEAREST);
CHECK(fast_float::detail::rounds_to_nearest() == true);
}
const char * round_name(int d) {
switch(d) {
case FE_UPWARD:
return "FE_UPWARD";
case FE_DOWNWARD:
return "FE_DOWNWARD";
case FE_TOWARDZERO:
return "FE_TOWARDZERO";
case FE_TONEAREST:
return "FE_TONEAREST";
default:
return "UNKNOWN";
}
}
// return true on success
bool check_file(std::string file_name) {
std::cout << "Checking " << file_name << std::endl;
// We check all rounding directions, for each file.
std::vector<int> directions = {FE_UPWARD, FE_DOWNWARD, FE_TOWARDZERO, FE_TONEAREST};
for (int d : directions) {
std::cout << "fesetround to " << round_name(d) << std::endl;
fesetround(d);
size_t number{0};
std::fstream newfile(file_name, std::ios::in);
if (newfile.is_open()) {
std::string str;
while (std::getline(newfile, str)) {
if (str.size() > 0) {
// Read 32-bit hex
uint32_t float32;
auto r32 = std::from_chars(str.data() + 5, str.data() + str.size(),
float32, 16);
if(r32.ec != std::errc()) { std::cerr << "32-bit parsing failure\n"; return false; }
// Read 64-bit hex
uint64_t float64;
auto r64 = std::from_chars(str.data() + 14, str.data() + str.size(),
float64, 16);
if(r64.ec != std::errc()) { std::cerr << "64-bit parsing failure\n"; return false; }
// The string to parse:
const char *number_string = str.data() + 31;
const char *end_of_string = str.data() + str.size();
// Parse as 32-bit float
float parsed_32;
auto fast_float_r32 = fast_float::from_chars(number_string, end_of_string, parsed_32);
if(fast_float_r32.ec != std::errc()) { std::cerr << "parsing failure\n"; return false; }
// Parse as 64-bit float
double parsed_64;
auto fast_float_r64 = fast_float::from_chars(number_string, end_of_string, parsed_64);
if(fast_float_r64.ec != std::errc()) { std::cerr << "parsing failure\n"; return false; }
// Convert the floats to unsigned ints.
uint32_t float32_parsed;
uint64_t float64_parsed;
::memcpy(&float32_parsed, &parsed_32, sizeof(parsed_32));
::memcpy(&float64_parsed, &parsed_64, sizeof(parsed_64));
// Compare with expected results
if (float32_parsed != float32) {
std::cout << "bad 32 " << str << std::endl;
std::cout << "parsed = " << iHexAndDec(float32_parsed) << ", expectd = " << iHexAndDec(float32) << std::endl;
std::cout << "fesetround: " << round_name(d) << std::endl;
fesetround(FE_TONEAREST);
return false;
}
if (float64_parsed != float64) {
std::cout << "bad 64 " << str << std::endl;
std::cout << "parsed = " << iHexAndDec(float64_parsed) << ", expectd = " << iHexAndDec(float64) << std::endl;
std::cout << "fesetround: " << round_name(d) << std::endl;
fesetround(FE_TONEAREST);
return false;
}
number++;
}
}
std::cout << "checked " << std::defaultfloat << number << " values" << std::endl;
newfile.close(); // close the file object
} else {
std::cout << "Could not read " << file_name << std::endl;
fesetround(FE_TONEAREST);
return false;
}
}
fesetround(FE_TONEAREST);
return true;
}
TEST_CASE("supplemental") {
std::string path = SUPPLEMENTAL_TEST_DATA_DIR;
for (const auto & entry : std::filesystem::directory_iterator(path)) {
CHECK(check_file(entry.path().string()));
}
}
#endif
TEST_CASE("leading_zeroes") {
constexpr const uint64_t bit = 1;
CHECK(fast_float::leading_zeroes(bit << 0) == 63);
CHECK(fast_float::leading_zeroes(bit << 1) == 62);
CHECK(fast_float::leading_zeroes(bit << 2) == 61);
CHECK(fast_float::leading_zeroes(bit << 61) == 2);
CHECK(fast_float::leading_zeroes(bit << 62) == 1);
CHECK(fast_float::leading_zeroes(bit << 63) == 0);
}
void test_full_multiplication(uint64_t lhs, uint64_t rhs, uint64_t expected_lo, uint64_t expected_hi) {
fast_float::value128 v;
v = fast_float::full_multiplication(lhs, rhs);
INFO("lhs=" << iHexAndDec(lhs) << " " << "rhs=" << iHexAndDec(rhs)
<< "\n actualLo=" << iHexAndDec(v.low) << " " << "actualHi=" << iHexAndDec(v.high)
<< "\n expectedLo=" << iHexAndDec(expected_lo) << " " << "expectedHi=" << iHexAndDec(expected_hi));
CHECK_EQ(v.low, expected_lo);
CHECK_EQ(v.high, expected_hi);
v = fast_float::full_multiplication(rhs, lhs);
CHECK_EQ(v.low, expected_lo);
CHECK_EQ(v.high, expected_hi);
}
TEST_CASE("full_multiplication") {
constexpr const uint64_t bit = 1;
// lhs rhs lo hi
test_full_multiplication(bit << 0 , bit << 0, 1u , 0u);
test_full_multiplication(bit << 0 , bit << 63, bit << 63, 0u);
test_full_multiplication(bit << 1 , bit << 63, 0u , 1u);
test_full_multiplication(bit << 63, bit << 0, bit << 63, 0u);
test_full_multiplication(bit << 63, bit << 1, 0u , 1u);
test_full_multiplication(bit << 63, bit << 2, 0u , 2u);
test_full_multiplication(bit << 63, bit << 63, 0u , bit << 62);
}
TEST_CASE("issue8") {
const char* s =
"3."
"141592653589793238462643383279502884197169399375105820974944592307816406"
"286208998628034825342117067982148086513282306647093844609550582231725359"
"408128481117450284102701938521105559644622948954930381964428810975665933"
"446128475648233786783165271201909145648566923460348610454326648213393607"
"260249141273724587006606315588174881520920962829254091715364367892590360"
"011330530548820466521384146951941511609433057270365759591953092186117381"
"932611793105118548074462379962749567351885752724891227938183011949129833"
"673362440656643086021394946395224737190702179860943702770539217176293176"
"752384674818467669405132000568127145263560827785771342757789609173637178"
"721468440901224953430146549585371050792279689258923542019956112129021960"
"864034418159813629774771309960518707211349999998372978";
for (int i = 0; i < 16; i++) {
// Parse all but the last i chars. We should still get 3.141ish.
double d = 0.0;
auto answer = fast_float::from_chars(s, s + strlen(s) - i, d);
CHECK_MESSAGE(answer.ec == std::errc(), "i=" << i);
CHECK_MESSAGE(d == 0x1.921fb54442d18p+1, "i=" << i << "\n"
<< std::string(s, strlen(s) - size_t(i)) << "\n"
<< std::hexfloat << d << "\n"
<< std::defaultfloat << "\n");
}
}
TEST_CASE("check_behavior") {
const std::string input = "abc";
double result;
auto answer = fast_float::from_chars(input.data(), input.data()+input.size(), result);
CHECK_MESSAGE(answer.ec != std::errc(), "expected parse failure");
CHECK_MESSAGE(answer.ptr == input.data(), "If there is no pattern match, we should have ptr equals first");
}
TEST_CASE("decimal_point_parsing") {
double result;
fast_float::parse_options options{};
{
const std::string input = "1,25";
auto answer = fast_float::from_chars_advanced(input.data(), input.data()+input.size(), result, options);
CHECK_MESSAGE(answer.ec == std::errc(), "expected parse success");
CHECK_MESSAGE(answer.ptr == input.data() + 1,
"Parsing should have stopped at comma");
CHECK_EQ(result, 1.0);
options.decimal_point = ',';
answer = fast_float::from_chars_advanced(input.data(), input.data()+input.size(), result, options);
CHECK_MESSAGE(answer.ec == std::errc(), "expected parse success");
CHECK_MESSAGE(answer.ptr == input.data() + input.size(),
"Parsing should have stopped at end");
CHECK_EQ(result, 1.25);
}
{
const std::string input = "1.25";
auto answer = fast_float::from_chars_advanced(input.data(), input.data()+input.size(), result, options);
CHECK_MESSAGE(answer.ec == std::errc(), "expected parse success");
CHECK_MESSAGE(answer.ptr == input.data() + 1,
"Parsing should have stopped at dot");
CHECK_EQ(result, 1.0);
options.decimal_point = '.';
answer = fast_float::from_chars_advanced(input.data(), input.data()+input.size(), result, options);
CHECK_MESSAGE(answer.ec == std::errc(), "expected parse success");
CHECK_MESSAGE(answer.ptr == input.data() + input.size(),
"Parsing should have stopped at end");
CHECK_EQ(result, 1.25);
}
}
TEST_CASE("issue19") {
const std::string input = "234532.3426362,7869234.9823,324562.645";
double result;
auto answer = fast_float::from_chars(input.data(), input.data()+input.size(), result);
CHECK_MESSAGE(answer.ec == std::errc(), "We want to parse up to 234532.3426362\n");
CHECK_MESSAGE(answer.ptr == input.data() + 14,
"Parsed the number " << result
<< " and stopped at the wrong character: after " << (answer.ptr - input.data()) << " characters");
CHECK_MESSAGE(result == 234532.3426362, "We want to parse234532.3426362\n");
CHECK_MESSAGE(answer.ptr[0] == ',', "We want to parse up to the comma\n");
answer = fast_float::from_chars(answer.ptr + 1, input.data()+input.size(), result);
CHECK_MESSAGE(answer.ec == std::errc(), "We want to parse 7869234.9823\n");
CHECK_MESSAGE(answer.ptr == input.data() + 27,
"Parsed the number " << result
<< " and stopped at the wrong character " << (answer.ptr - input.data()));
CHECK_MESSAGE(answer.ptr[0] == ',', "We want to parse up to the comma\n");
CHECK_MESSAGE(result == 7869234.9823, "We want to parse up 7869234.9823\n");
answer = fast_float::from_chars(answer.ptr + 1, input.data()+input.size(), result);
CHECK_MESSAGE(answer.ec == std::errc(), "We want to parse 324562.645\n");
CHECK_MESSAGE(answer.ptr == input.data() + 38,
"Parsed the number " << result
<< " and stopped at the wrong character " << (answer.ptr - input.data()));
CHECK_MESSAGE(result == 324562.645, "We want to parse up 7869234.9823\n");
}
TEST_CASE("issue19") {
const std::string input = "3.14e";
double result;
auto answer = fast_float::from_chars(input.data(), input.data()+input.size(), result);
CHECK_MESSAGE(answer.ec == std::errc(), "We want to parse up to 3.14\n");
CHECK_MESSAGE(answer.ptr == input.data() + 4,
"Parsed the number " << result
<< " and stopped at the wrong character: after " << (answer.ptr - input.data()) << " characters");
}
TEST_CASE("scientific_only") {
// first, we try with something that should fail...
std::string input = "3.14";
double result;
auto answer = fast_float::from_chars(input.data(), input.data()+input.size(), result, fast_float::chars_format::scientific);
CHECK_MESSAGE(answer.ec != std::errc(), "It is not scientific! Parsed: " << result);
input = "3.14e10";
answer = fast_float::from_chars(input.data(), input.data()+input.size(), result, fast_float::chars_format::scientific);
CHECK_MESSAGE(answer.ec == std::errc(), "It is scientific! Parsed: " << result);
CHECK_MESSAGE(answer.ptr == input.data() + input.size(),
"Parsed the number " << result
<< " and stopped at the wrong character: after " << (answer.ptr - input.data()) << " characters");
}
TEST_CASE("test_fixed_only") {
const std::string input = "3.14e10";
double result;
auto answer = fast_float::from_chars(input.data(), input.data()+input.size(), result, fast_float::chars_format::fixed);
CHECK_MESSAGE(answer.ec == std::errc(), "We want to parse up to 3.14; parsed: " << result);
CHECK_MESSAGE(answer.ptr == input.data() + 4,
"Parsed the number " << result
<< " and stopped at the wrong character: after " << (answer.ptr - input.data()) << " characters");
}
static const double testing_power_of_ten[] = {
1e-307, 1e-306, 1e-305, 1e-304, 1e-303, 1e-302, 1e-301, 1e-300, 1e-299,
1e-298, 1e-297, 1e-296, 1e-295, 1e-294, 1e-293, 1e-292, 1e-291, 1e-290,
1e-289, 1e-288, 1e-287, 1e-286, 1e-285, 1e-284, 1e-283, 1e-282, 1e-281,
1e-280, 1e-279, 1e-278, 1e-277, 1e-276, 1e-275, 1e-274, 1e-273, 1e-272,
1e-271, 1e-270, 1e-269, 1e-268, 1e-267, 1e-266, 1e-265, 1e-264, 1e-263,
1e-262, 1e-261, 1e-260, 1e-259, 1e-258, 1e-257, 1e-256, 1e-255, 1e-254,
1e-253, 1e-252, 1e-251, 1e-250, 1e-249, 1e-248, 1e-247, 1e-246, 1e-245,
1e-244, 1e-243, 1e-242, 1e-241, 1e-240, 1e-239, 1e-238, 1e-237, 1e-236,
1e-235, 1e-234, 1e-233, 1e-232, 1e-231, 1e-230, 1e-229, 1e-228, 1e-227,
1e-226, 1e-225, 1e-224, 1e-223, 1e-222, 1e-221, 1e-220, 1e-219, 1e-218,
1e-217, 1e-216, 1e-215, 1e-214, 1e-213, 1e-212, 1e-211, 1e-210, 1e-209,
1e-208, 1e-207, 1e-206, 1e-205, 1e-204, 1e-203, 1e-202, 1e-201, 1e-200,
1e-199, 1e-198, 1e-197, 1e-196, 1e-195, 1e-194, 1e-193, 1e-192, 1e-191,
1e-190, 1e-189, 1e-188, 1e-187, 1e-186, 1e-185, 1e-184, 1e-183, 1e-182,
1e-181, 1e-180, 1e-179, 1e-178, 1e-177, 1e-176, 1e-175, 1e-174, 1e-173,
1e-172, 1e-171, 1e-170, 1e-169, 1e-168, 1e-167, 1e-166, 1e-165, 1e-164,
1e-163, 1e-162, 1e-161, 1e-160, 1e-159, 1e-158, 1e-157, 1e-156, 1e-155,
1e-154, 1e-153, 1e-152, 1e-151, 1e-150, 1e-149, 1e-148, 1e-147, 1e-146,
1e-145, 1e-144, 1e-143, 1e-142, 1e-141, 1e-140, 1e-139, 1e-138, 1e-137,
1e-136, 1e-135, 1e-134, 1e-133, 1e-132, 1e-131, 1e-130, 1e-129, 1e-128,
1e-127, 1e-126, 1e-125, 1e-124, 1e-123, 1e-122, 1e-121, 1e-120, 1e-119,
1e-118, 1e-117, 1e-116, 1e-115, 1e-114, 1e-113, 1e-112, 1e-111, 1e-110,
1e-109, 1e-108, 1e-107, 1e-106, 1e-105, 1e-104, 1e-103, 1e-102, 1e-101,
1e-100, 1e-99, 1e-98, 1e-97, 1e-96, 1e-95, 1e-94, 1e-93, 1e-92,
1e-91, 1e-90, 1e-89, 1e-88, 1e-87, 1e-86, 1e-85, 1e-84, 1e-83,
1e-82, 1e-81, 1e-80, 1e-79, 1e-78, 1e-77, 1e-76, 1e-75, 1e-74,
1e-73, 1e-72, 1e-71, 1e-70, 1e-69, 1e-68, 1e-67, 1e-66, 1e-65,
1e-64, 1e-63, 1e-62, 1e-61, 1e-60, 1e-59, 1e-58, 1e-57, 1e-56,
1e-55, 1e-54, 1e-53, 1e-52, 1e-51, 1e-50, 1e-49, 1e-48, 1e-47,
1e-46, 1e-45, 1e-44, 1e-43, 1e-42, 1e-41, 1e-40, 1e-39, 1e-38,
1e-37, 1e-36, 1e-35, 1e-34, 1e-33, 1e-32, 1e-31, 1e-30, 1e-29,
1e-28, 1e-27, 1e-26, 1e-25, 1e-24, 1e-23, 1e-22, 1e-21, 1e-20,
1e-19, 1e-18, 1e-17, 1e-16, 1e-15, 1e-14, 1e-13, 1e-12, 1e-11,
1e-10, 1e-9, 1e-8, 1e-7, 1e-6, 1e-5, 1e-4, 1e-3, 1e-2,
1e-1, 1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7,
1e8, 1e9, 1e10, 1e11, 1e12, 1e13, 1e14, 1e15, 1e16,
1e17, 1e18, 1e19, 1e20, 1e21, 1e22, 1e23, 1e24, 1e25,
1e26, 1e27, 1e28, 1e29, 1e30, 1e31, 1e32, 1e33, 1e34,
1e35, 1e36, 1e37, 1e38, 1e39, 1e40, 1e41, 1e42, 1e43,
1e44, 1e45, 1e46, 1e47, 1e48, 1e49, 1e50, 1e51, 1e52,
1e53, 1e54, 1e55, 1e56, 1e57, 1e58, 1e59, 1e60, 1e61,
1e62, 1e63, 1e64, 1e65, 1e66, 1e67, 1e68, 1e69, 1e70,
1e71, 1e72, 1e73, 1e74, 1e75, 1e76, 1e77, 1e78, 1e79,
1e80, 1e81, 1e82, 1e83, 1e84, 1e85, 1e86, 1e87, 1e88,
1e89, 1e90, 1e91, 1e92, 1e93, 1e94, 1e95, 1e96, 1e97,
1e98, 1e99, 1e100, 1e101, 1e102, 1e103, 1e104, 1e105, 1e106,
1e107, 1e108, 1e109, 1e110, 1e111, 1e112, 1e113, 1e114, 1e115,
1e116, 1e117, 1e118, 1e119, 1e120, 1e121, 1e122, 1e123, 1e124,
1e125, 1e126, 1e127, 1e128, 1e129, 1e130, 1e131, 1e132, 1e133,
1e134, 1e135, 1e136, 1e137, 1e138, 1e139, 1e140, 1e141, 1e142,
1e143, 1e144, 1e145, 1e146, 1e147, 1e148, 1e149, 1e150, 1e151,
1e152, 1e153, 1e154, 1e155, 1e156, 1e157, 1e158, 1e159, 1e160,
1e161, 1e162, 1e163, 1e164, 1e165, 1e166, 1e167, 1e168, 1e169,
1e170, 1e171, 1e172, 1e173, 1e174, 1e175, 1e176, 1e177, 1e178,
1e179, 1e180, 1e181, 1e182, 1e183, 1e184, 1e185, 1e186, 1e187,
1e188, 1e189, 1e190, 1e191, 1e192, 1e193, 1e194, 1e195, 1e196,
1e197, 1e198, 1e199, 1e200, 1e201, 1e202, 1e203, 1e204, 1e205,
1e206, 1e207, 1e208, 1e209, 1e210, 1e211, 1e212, 1e213, 1e214,
1e215, 1e216, 1e217, 1e218, 1e219, 1e220, 1e221, 1e222, 1e223,
1e224, 1e225, 1e226, 1e227, 1e228, 1e229, 1e230, 1e231, 1e232,
1e233, 1e234, 1e235, 1e236, 1e237, 1e238, 1e239, 1e240, 1e241,
1e242, 1e243, 1e244, 1e245, 1e246, 1e247, 1e248, 1e249, 1e250,
1e251, 1e252, 1e253, 1e254, 1e255, 1e256, 1e257, 1e258, 1e259,
1e260, 1e261, 1e262, 1e263, 1e264, 1e265, 1e266, 1e267, 1e268,
1e269, 1e270, 1e271, 1e272, 1e273, 1e274, 1e275, 1e276, 1e277,
1e278, 1e279, 1e280, 1e281, 1e282, 1e283, 1e284, 1e285, 1e286,
1e287, 1e288, 1e289, 1e290, 1e291, 1e292, 1e293, 1e294, 1e295,
1e296, 1e297, 1e298, 1e299, 1e300, 1e301, 1e302, 1e303, 1e304,
1e305, 1e306, 1e307, 1e308};
TEST_CASE("powers_of_ten") {
char buf[1024];
WARN_MESSAGE(1e-308 == std::pow(10, -308), "On your system, the pow function is busted. Sorry about that.");
bool is_pow_correct{1e-308 == std::pow(10,-308)};
// large negative values should be zero.
int start_point = is_pow_correct ? -1000 : -307;
for (int i = start_point; i <= 308; ++i) {
INFO("i=" << i);
size_t n = size_t(snprintf(buf, sizeof(buf), "1e%d", i));
REQUIRE(n < sizeof(buf)); // if false, fails the test and exits
double actual;
auto result = fast_float::from_chars(buf, buf + 1000, actual);
CHECK_MESSAGE(result.ec == std::errc(), " I could not parse " << buf);
double expected = ((i >= -307) ? testing_power_of_ten[i + 307] : std::pow(10, i));
CHECK_MESSAGE(actual == expected, "String '" << buf << "'parsed to " << actual);
}
}
template <typename T> std::string to_string(T d) {
std::string s(64, '\0');
auto written = std::snprintf(&s[0], s.size(), "%.*e",
std::numeric_limits<T>::max_digits10 - 1, d);
s.resize(size_t(written));
return s;
}
template <typename T> std::string to_long_string(T d) {
std::string s(4096, '\0');
auto written = std::snprintf(&s[0], s.size(), "%.*e",
std::numeric_limits<T>::max_digits10 * 10, d);
s.resize(size_t(written));
return s;
}
uint32_t get_mantissa(float f) {
uint32_t m;
memcpy(&m, &f, sizeof(f));
return (m & ((uint32_t(1)<<23)-1));
}
uint64_t get_mantissa(double f) {
uint64_t m;
memcpy(&m, &f, sizeof(f));
return (m & ((uint64_t(1)<<57)-1));
}
std::string append_zeros(std::string str, size_t number_of_zeros) {
std::string answer(str);
for(size_t i = 0; i < number_of_zeros; i++) { answer += "0"; }
return answer;
}
template<class T>
void check_basic_test_result(const std::string& str, fast_float::from_chars_result result,
T actual, T expected) {
INFO("str=" << str << "\n"
<< " expected=" << fHexAndDec(expected) << "\n"
<< " ..actual=" << fHexAndDec(actual) << "\n"
<< " expected mantissa=" << iHexAndDec(get_mantissa(expected)) << "\n"
<< " ..actual mantissa=" << iHexAndDec(get_mantissa(actual)));
CHECK_EQ(result.ec, std::errc());
CHECK_EQ(result.ptr, str.data() + str.size());
CHECK_EQ(copysign(1, actual), copysign(1, expected));
CHECK_EQ(std::isnan(actual), std::isnan(expected));
CHECK_EQ(actual, expected);
}
template<class T>
void basic_test(std::string str, T expected) {
T actual;
auto result = fast_float::from_chars(str.data(), str.data() + str.size(), actual);
check_basic_test_result(str, result, actual, expected);
}
template<class T>
void basic_test(std::string str, T expected, fast_float::parse_options options) {
T actual;
auto result = fast_float::from_chars_advanced(str.data(), str.data() + str.size(), actual, options);
check_basic_test_result(str, result, actual, expected);
}
void basic_test(float val) {
{
std::string long_vals = to_long_string(val);
INFO("long vals: " << long_vals);
basic_test<float>(long_vals, val);
}
{
std::string vals = to_string(val);
INFO("vals: " << vals);
basic_test<float>(vals, val);
}
}
#define verify(lhs, rhs) { INFO(lhs); basic_test(lhs, rhs); }
#define verify32(val) { INFO(#val); basic_test(val); }
#define verify_options(lhs, rhs) { INFO(lhs); basic_test(lhs, rhs, options); }
TEST_CASE("64bit.inf") {
verify("INF", std::numeric_limits<double>::infinity());
verify("-INF", -std::numeric_limits<double>::infinity());
verify("INFINITY", std::numeric_limits<double>::infinity());
verify("-INFINITY", -std::numeric_limits<double>::infinity());
verify("infinity", std::numeric_limits<double>::infinity());
verify("-infinity", -std::numeric_limits<double>::infinity());
verify("inf", std::numeric_limits<double>::infinity());
verify("-inf", -std::numeric_limits<double>::infinity());
verify("1234456789012345678901234567890e9999999999999999999999999999", std::numeric_limits<double>::infinity());
verify("-2139879401095466344511101915470454744.9813888656856943E+272", -std::numeric_limits<double>::infinity());
verify("1.8e308", std::numeric_limits<double>::infinity());
verify("1.832312213213213232132132143451234453123412321321312e308", std::numeric_limits<double>::infinity());
verify("2e30000000000000000", std::numeric_limits<double>::infinity());
verify("2e3000", std::numeric_limits<double>::infinity());
verify("1.9e308", std::numeric_limits<double>::infinity());
}
TEST_CASE("64bit.general") {
verify("-1e-999",-0.0);
verify("-2.2222222222223e-322",-0x1.68p-1069);
verify("9007199254740993.0", 0x1p+53);
verify("860228122.6654514319E+90", 0x1.92bb20990715fp+328);
verify(append_zeros("9007199254740993.0",1000), 0x1p+53);
verify("10000000000000000000", 0x1.158e460913dp+63);
verify("10000000000000000000000000000001000000000000", 0x1.cb2d6f618c879p+142);
verify("10000000000000000000000000000000000000000001", 0x1.cb2d6f618c879p+142);
verify("1.1920928955078125e-07", 1.1920928955078125e-07);
verify("9355950000000000000.00000000000000000000000000000000001844674407370955161600000184467440737095516161844674407370955161407370955161618446744073709551616000184467440737095516166000001844674407370955161618446744073709551614073709551616184467440737095516160001844674407370955161601844674407370955674451616184467440737095516140737095516161844674407370955161600018446744073709551616018446744073709551611616000184467440737095001844674407370955161600184467440737095516160018446744073709551168164467440737095516160001844073709551616018446744073709551616184467440737095516160001844674407536910751601611616000184467440737095001844674407370955161600184467440737095516160018446744073709551616184467440737095516160001844955161618446744073709551616000184467440753691075160018446744073709",0x1.03ae05e8fca1cp+63);
verify("-0",-0.0);
verify("2.22507385850720212418870147920222032907240528279439037814303133837435107319244194686754406432563881851382188218502438069999947733013005649884107791928741341929297200970481951993067993290969042784064731682041565926728632933630474670123316852983422152744517260835859654566319282835244787787799894310779783833699159288594555213714181128458251145584319223079897504395086859412457230891738946169368372321191373658977977723286698840356390251044443035457396733706583981055420456693824658413747607155981176573877626747665912387199931904006317334709003012790188175203447190250028061277777916798391090578584006464715943810511489154282775041174682194133952466682503431306181587829379004205392375072083366693241580002758391118854188641513168478436313080237596295773983001708984375e-308", 0x1.0000000000002p-1022);
verify("1.0000000000000006661338147750939242541790008544921875",1.0000000000000007);
verify("1090544144181609348835077142190",0x1.b8779f2474dfbp+99);
verify("2.2250738585072013e-308", 2.2250738585072013e-308);
verify("-92666518056446206563E3", -92666518056446206563E3);
verify("-92666518056446206563E3", -92666518056446206563E3);
verify("-42823146028335318693e-128",-42823146028335318693e-128);
verify("90054602635948575728E72",90054602635948575728E72);
verify("1.00000000000000188558920870223463870174566020691753515394643550663070558368373221972569761144603605635692374830246134201063722058e-309", 1.00000000000000188558920870223463870174566020691753515394643550663070558368373221972569761144603605635692374830246134201063722058e-309);
verify("0e9999999999999999999999999999", 0.0);
verify("-2402844368454405395.2", -2402844368454405395.2);
verify("2402844368454405395.2", 2402844368454405395.2);
verify("7.0420557077594588669468784357561207962098443483187940792729600000e+59", 7.0420557077594588669468784357561207962098443483187940792729600000e+59);
verify("7.0420557077594588669468784357561207962098443483187940792729600000e+59", 7.0420557077594588669468784357561207962098443483187940792729600000e+59);
verify("-1.7339253062092163730578609458683877051596800000000000000000000000e+42", -1.7339253062092163730578609458683877051596800000000000000000000000e+42);
verify("-2.0972622234386619214559824785284023792871122537545728000000000000e+52", -2.0972622234386619214559824785284023792871122537545728000000000000e+52);
verify("-1.0001803374372191849407179462120053338028379051879898808320000000e+57", -1.0001803374372191849407179462120053338028379051879898808320000000e+57);
verify("-1.8607245283054342363818436991534856973992070520151142825984000000e+58", -1.8607245283054342363818436991534856973992070520151142825984000000e+58);
verify("-1.9189205311132686907264385602245237137907390376574976000000000000e+52", -1.9189205311132686907264385602245237137907390376574976000000000000e+52);
verify("-2.8184483231688951563253238886553506793085187889855201280000000000e+54", -2.8184483231688951563253238886553506793085187889855201280000000000e+54);
verify("-1.7664960224650106892054063261344555646357024359107788800000000000e+53", -1.7664960224650106892054063261344555646357024359107788800000000000e+53);
verify("-2.1470977154320536489471030463761883783915110400000000000000000000e+45", -2.1470977154320536489471030463761883783915110400000000000000000000e+45);
verify("-4.4900312744003159009338275160799498340862630046359789166919680000e+61", -4.4900312744003159009338275160799498340862630046359789166919680000e+61);
verify("1", 1.0);
verify("1.797693134862315700000000000000001e308", 1.7976931348623157e308);
verify("3e-324", 0x0.0000000000001p-1022);
verify("1.00000006e+09", 0x1.dcd651ep+29);
verify("4.9406564584124653e-324", 0x0.0000000000001p-1022);
verify("4.9406564584124654e-324", 0x0.0000000000001p-1022);
verify("2.2250738585072009e-308", 0x0.fffffffffffffp-1022);
verify("2.2250738585072014e-308", 0x1p-1022);
verify("1.7976931348623157e308", 0x1.fffffffffffffp+1023);
verify("1.7976931348623158e308", 0x1.fffffffffffffp+1023);
verify("4503599627370496.5", 4503599627370496.5);
verify("4503599627475352.5", 4503599627475352.5);
verify("4503599627475353.5", 4503599627475353.5);
verify("2251799813685248.25", 2251799813685248.25);
verify("1125899906842624.125", 1125899906842624.125);
verify("1125899906842901.875", 1125899906842901.875);
verify("2251799813685803.75", 2251799813685803.75);
verify("4503599627370497.5", 4503599627370497.5);
verify("45035996.273704995", 45035996.273704995);
verify("45035996.273704985", 45035996.273704985);
verify("0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044501477170144022721148195934182639518696390927032912960468522194496444440421538910330590478162701758282983178260792422137401728773891892910553144148156412434867599762821265346585071045737627442980259622449029037796981144446145705102663115100318287949527959668236039986479250965780342141637013812613333119898765515451440315261253813266652951306000184917766328660755595837392240989947807556594098101021612198814605258742579179000071675999344145086087205681577915435923018910334964869420614052182892431445797605163650903606514140377217442262561590244668525767372446430075513332450079650686719491377688478005309963967709758965844137894433796621993967316936280457084866613206797017728916080020698679408551343728867675409720757232455434770912461317493580281734466552734375", 0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044501477170144022721148195934182639518696390927032912960468522194496444440421538910330590478162701758282983178260792422137401728773891892910553144148156412434867599762821265346585071045737627442980259622449029037796981144446145705102663115100318287949527959668236039986479250965780342141637013812613333119898765515451440315261253813266652951306000184917766328660755595837392240989947807556594098101021612198814605258742579179000071675999344145086087205681577915435923018910334964869420614052182892431445797605163650903606514140377217442262561590244668525767372446430075513332450079650686719491377688478005309963967709758965844137894433796621993967316936280457084866613206797017728916080020698679408551343728867675409720757232455434770912461317493580281734466552734375);
verify("0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072008890245868760858598876504231122409594654935248025624400092282356951787758888037591552642309780950434312085877387158357291821993020294379224223559819827501242041788969571311791082261043971979604000454897391938079198936081525613113376149842043271751033627391549782731594143828136275113838604094249464942286316695429105080201815926642134996606517803095075913058719846423906068637102005108723282784678843631944515866135041223479014792369585208321597621066375401613736583044193603714778355306682834535634005074073040135602968046375918583163124224521599262546494300836851861719422417646455137135420132217031370496583210154654068035397417906022589503023501937519773030945763173210852507299305089761582519159720757232455434770912461317493580281734466552734375", 0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072008890245868760858598876504231122409594654935248025624400092282356951787758888037591552642309780950434312085877387158357291821993020294379224223559819827501242041788969571311791082261043971979604000454897391938079198936081525613113376149842043271751033627391549782731594143828136275113838604094249464942286316695429105080201815926642134996606517803095075913058719846423906068637102005108723282784678843631944515866135041223479014792369585208321597621066375401613736583044193603714778355306682834535634005074073040135602968046375918583163124224521599262546494300836851861719422417646455137135420132217031370496583210154654068035397417906022589503023501937519773030945763173210852507299305089761582519159720757232455434770912461317493580281734466552734375);
verify("1438456663141390273526118207642235581183227845246331231162636653790368152091394196930365828634687637948157940776599182791387527135353034738357134110310609455693900824193549772792016543182680519740580354365467985440183598701312257624545562331397018329928613196125590274187720073914818062530830316533158098624984118889298281371812288789537310599037529113415438738954894752124724983067241108764488346454376699018673078404751121414804937224240805993123816932326223683090770561597570457793932985826162604255884529134126396282202126526253389383421806727954588525596114379801269094096329805054803089299736996870951258573010877404407451953846698609198213926882692078557033228265259305481198526059813164469187586693257335779522020407645498684263339921905227556616698129967412891282231685504660671277927198290009824680186319750978665734576683784255802269708917361719466043175201158849097881370477111850171579869056016061666173029059588433776015644439705050377554277696143928278093453792803846252715966016733222646442382892123940052441346822429721593884378212558701004356924243030059517489346646577724622498919752597382095222500311124181823512251071356181769376577651390028297796156208815375089159128394945710515861334486267101797497111125909272505194792870889617179758703442608016143343262159998149700606597792535574457560429226974273443630323818747730771316763398572110874959981923732463076884528677392654150010269822239401993427482376513231389212353583573566376915572650916866553612366187378959554983566712767093372906030188976220169058025354973622211666504549316958271880975697143546564469806791358707318873075708383345004090151974068325838177531266954177406661392229801349994695941509935655355652985723782153570084089560139142231.738475042362596875449154552392299548947138162081694168675340677843807613129780449323363759027012972466987370921816813162658754726545121090545507240267000456594786540949605260722461937870630634874991729398208026467698131898691830012167897399682179601734569071423681e-733", std::numeric_limits<double>::infinity());
verify("-2240084132271013504.131248280843119943687942846658579428", -0x1.f1660a65b00bfp+60);
}
TEST_CASE("64bit.decimal_point") {
fast_float::parse_options options{};
options.decimal_point = ',';
// infinities
verify_options("1,8e308", std::numeric_limits<double>::infinity());
verify_options("1,832312213213213232132132143451234453123412321321312e308", std::numeric_limits<double>::infinity());
verify_options("2e30000000000000000", std::numeric_limits<double>::infinity());
verify_options("2e3000", std::numeric_limits<double>::infinity());
verify_options("1,9e308", std::numeric_limits<double>::infinity());
// finites
verify_options("-2,2222222222223e-322",-0x1.68p-1069);
verify_options("9007199254740993,0", 0x1p+53);
verify_options("860228122,6654514319E+90", 0x1.92bb20990715fp+328);
verify_options(append_zeros("9007199254740993,0",1000), 0x1p+53);
verify_options("1,1920928955078125e-07", 1.1920928955078125e-07);
verify_options("9355950000000000000,00000000000000000000000000000000001844674407370955161600000184467440737095516161844674407370955161407370955161618446744073709551616000184467440737095516166000001844674407370955161618446744073709551614073709551616184467440737095516160001844674407370955161601844674407370955674451616184467440737095516140737095516161844674407370955161600018446744073709551616018446744073709551611616000184467440737095001844674407370955161600184467440737095516160018446744073709551168164467440737095516160001844073709551616018446744073709551616184467440737095516160001844674407536910751601611616000184467440737095001844674407370955161600184467440737095516160018446744073709551616184467440737095516160001844955161618446744073709551616000184467440753691075160018446744073709",0x1.03ae05e8fca1cp+63);
verify_options("2,22507385850720212418870147920222032907240528279439037814303133837435107319244194686754406432563881851382188218502438069999947733013005649884107791928741341929297200970481951993067993290969042784064731682041565926728632933630474670123316852983422152744517260835859654566319282835244787787799894310779783833699159288594555213714181128458251145584319223079897504395086859412457230891738946169368372321191373658977977723286698840356390251044443035457396733706583981055420456693824658413747607155981176573877626747665912387199931904006317334709003012790188175203447190250028061277777916798391090578584006464715943810511489154282775041174682194133952466682503431306181587829379004205392375072083366693241580002758391118854188641513168478436313080237596295773983001708984375e-308", 0x1.0000000000002p-1022);
verify_options("1,0000000000000006661338147750939242541790008544921875",1.0000000000000007);
verify_options("2,2250738585072013e-308", 2.2250738585072013e-308);
verify_options("1,00000000000000188558920870223463870174566020691753515394643550663070558368373221972569761144603605635692374830246134201063722058e-309", 1.00000000000000188558920870223463870174566020691753515394643550663070558368373221972569761144603605635692374830246134201063722058e-309);
verify_options("-2402844368454405395,2", -2402844368454405395.2);
verify_options("2402844368454405395,2", 2402844368454405395.2);
verify_options("7,0420557077594588669468784357561207962098443483187940792729600000e+59", 7.0420557077594588669468784357561207962098443483187940792729600000e+59);
verify_options("7,0420557077594588669468784357561207962098443483187940792729600000e+59", 7.0420557077594588669468784357561207962098443483187940792729600000e+59);
verify_options("-1,7339253062092163730578609458683877051596800000000000000000000000e+42", -1.7339253062092163730578609458683877051596800000000000000000000000e+42);
verify_options("-2,0972622234386619214559824785284023792871122537545728000000000000e+52", -2.0972622234386619214559824785284023792871122537545728000000000000e+52);
verify_options("-1,0001803374372191849407179462120053338028379051879898808320000000e+57", -1.0001803374372191849407179462120053338028379051879898808320000000e+57);
verify_options("-1,8607245283054342363818436991534856973992070520151142825984000000e+58", -1.8607245283054342363818436991534856973992070520151142825984000000e+58);
verify_options("-1,9189205311132686907264385602245237137907390376574976000000000000e+52", -1.9189205311132686907264385602245237137907390376574976000000000000e+52);
verify_options("-2,8184483231688951563253238886553506793085187889855201280000000000e+54", -2.8184483231688951563253238886553506793085187889855201280000000000e+54);
verify_options("-1,7664960224650106892054063261344555646357024359107788800000000000e+53", -1.7664960224650106892054063261344555646357024359107788800000000000e+53);
verify_options("-2,1470977154320536489471030463761883783915110400000000000000000000e+45", -2.1470977154320536489471030463761883783915110400000000000000000000e+45);
verify_options("-4,4900312744003159009338275160799498340862630046359789166919680000e+61", -4.4900312744003159009338275160799498340862630046359789166919680000e+61);
verify_options("1", 1.0);
verify_options("1,797693134862315700000000000000001e308", 1.7976931348623157e308);
verify_options("3e-324", 0x0.0000000000001p-1022);
verify_options("1,00000006e+09", 0x1.dcd651ep+29);
verify_options("4,9406564584124653e-324", 0x0.0000000000001p-1022);
verify_options("4,9406564584124654e-324", 0x0.0000000000001p-1022);
verify_options("2,2250738585072009e-308", 0x0.fffffffffffffp-1022);
verify_options("2,2250738585072014e-308", 0x1p-1022);
verify_options("1,7976931348623157e308", 0x1.fffffffffffffp+1023);
verify_options("1,7976931348623158e308", 0x1.fffffffffffffp+1023);
verify_options("4503599627370496,5", 4503599627370496.5);
verify_options("4503599627475352,5", 4503599627475352.5);
verify_options("4503599627475353,5", 4503599627475353.5);
verify_options("2251799813685248,25", 2251799813685248.25);
verify_options("1125899906842624,125", 1125899906842624.125);
verify_options("1125899906842901,875", 1125899906842901.875);
verify_options("2251799813685803,75", 2251799813685803.75);
verify_options("4503599627370497,5", 4503599627370497.5);
verify_options("45035996,273704995", 45035996.273704995);
verify_options("45035996,273704985", 45035996.273704985);
verify_options("0,000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044501477170144022721148195934182639518696390927032912960468522194496444440421538910330590478162701758282983178260792422137401728773891892910553144148156412434867599762821265346585071045737627442980259622449029037796981144446145705102663115100318287949527959668236039986479250965780342141637013812613333119898765515451440315261253813266652951306000184917766328660755595837392240989947807556594098101021612198814605258742579179000071675999344145086087205681577915435923018910334964869420614052182892431445797605163650903606514140377217442262561590244668525767372446430075513332450079650686719491377688478005309963967709758965844137894433796621993967316936280457084866613206797017728916080020698679408551343728867675409720757232455434770912461317493580281734466552734375", 0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044501477170144022721148195934182639518696390927032912960468522194496444440421538910330590478162701758282983178260792422137401728773891892910553144148156412434867599762821265346585071045737627442980259622449029037796981144446145705102663115100318287949527959668236039986479250965780342141637013812613333119898765515451440315261253813266652951306000184917766328660755595837392240989947807556594098101021612198814605258742579179000071675999344145086087205681577915435923018910334964869420614052182892431445797605163650903606514140377217442262561590244668525767372446430075513332450079650686719491377688478005309963967709758965844137894433796621993967316936280457084866613206797017728916080020698679408551343728867675409720757232455434770912461317493580281734466552734375);
verify_options("0,000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072008890245868760858598876504231122409594654935248025624400092282356951787758888037591552642309780950434312085877387158357291821993020294379224223559819827501242041788969571311791082261043971979604000454897391938079198936081525613113376149842043271751033627391549782731594143828136275113838604094249464942286316695429105080201815926642134996606517803095075913058719846423906068637102005108723282784678843631944515866135041223479014792369585208321597621066375401613736583044193603714778355306682834535634005074073040135602968046375918583163124224521599262546494300836851861719422417646455137135420132217031370496583210154654068035397417906022589503023501937519773030945763173210852507299305089761582519159720757232455434770912461317493580281734466552734375", 0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072008890245868760858598876504231122409594654935248025624400092282356951787758888037591552642309780950434312085877387158357291821993020294379224223559819827501242041788969571311791082261043971979604000454897391938079198936081525613113376149842043271751033627391549782731594143828136275113838604094249464942286316695429105080201815926642134996606517803095075913058719846423906068637102005108723282784678843631944515866135041223479014792369585208321597621066375401613736583044193603714778355306682834535634005074073040135602968046375918583163124224521599262546494300836851861719422417646455137135420132217031370496583210154654068035397417906022589503023501937519773030945763173210852507299305089761582519159720757232455434770912461317493580281734466552734375);
}
TEST_CASE("32bit.inf") {
verify("INF", std::numeric_limits<float>::infinity());
verify("-INF", -std::numeric_limits<float>::infinity());
verify("INFINITY", std::numeric_limits<float>::infinity());
verify("-INFINITY", -std::numeric_limits<float>::infinity());
verify("infinity", std::numeric_limits<float>::infinity());
verify("-infinity", -std::numeric_limits<float>::infinity());
verify("inf", std::numeric_limits<float>::infinity());
verify("-inf", -std::numeric_limits<float>::infinity());
verify("1234456789012345678901234567890e9999999999999999999999999999", std::numeric_limits<float>::infinity());
verify("2e3000", std::numeric_limits<float>::infinity());
verify("3.5028234666e38", std::numeric_limits<float>::infinity());
}
TEST_CASE("32bit.general") {
verify("-1e-999",-0.0f);
verify("1.1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125", 0x1.2ced3p+0f);
verify("1.1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125e-38", 0x1.fffff8p-127f);
verify(append_zeros("1.1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125",655), 0x1.2ced3p+0f);
verify(append_zeros("1.1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125",656), 0x1.2ced3p+0f);
verify(append_zeros("1.1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125",1000), 0x1.2ced3p+0f);
std::string test_string;
test_string = append_zeros("1.1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125",655) + std::string("e-38");
verify(test_string, 0x1.fffff8p-127f);
test_string = append_zeros("1.1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125",656) + std::string("e-38");
verify(test_string, 0x1.fffff8p-127f);
test_string = append_zeros("1.1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125",1000) + std::string("e-38");
verify(test_string, 0x1.fffff8p-127f);
verify32(1.00000006e+09f);
verify32(1.4012984643e-45f);
verify32(1.1754942107e-38f);
verify32(1.1754943508e-45f);
verify("-0", -0.0f);
verify("1090544144181609348835077142190", 0x1.b877ap+99f);
verify("1.1754943508e-38", 1.1754943508e-38f);
verify("30219.0830078125", 30219.0830078125f);
verify("16252921.5", 16252921.5f);
verify("5322519.25", 5322519.25f);
verify("3900245.875", 3900245.875f);
verify("1510988.3125", 1510988.3125f);
verify("782262.28125", 782262.28125f);
verify("328381.484375", 328381.484375f);
verify("156782.0703125", 156782.0703125f);
verify("85003.24609375", 85003.24609375f);
verify("17419.6494140625", 17419.6494140625f);
verify("15498.36376953125", 15498.36376953125f);
verify("6318.580322265625", 6318.580322265625f);
verify("2525.2840576171875", 2525.2840576171875f);
verify("1370.9265747070312", 1370.9265747070312f);
verify("936.3702087402344", 936.3702087402344f);
verify("411.88682556152344", 411.88682556152344f);
verify("206.50310516357422", 206.50310516357422f);
verify("124.16878890991211", 124.16878890991211f);
verify("50.811574935913086", 50.811574935913086f);
verify("17.486443519592285", 17.486443519592285f);
verify("13.91745138168335", 13.91745138168335f);
verify("7.5464513301849365", 0x1.e2f90ep+2f);
verify("2.687217116355896", 2.687217116355896f);
verify("1.1877630352973938", 0x1.30113ep+0f);
verify("0.7622503340244293", 0.7622503340244293f);
verify("0.30531780421733856", 0x1.38a53ap-2f);
verify("0.21791061013936996", 0x1.be47eap-3f);
verify("0.09289376810193062", 0x1.7c7e2ep-4f);
verify("0.03706067614257336", 0.03706067614257336f);
verify("0.028068351559340954", 0.028068351559340954f);
verify("0.012114629615098238", 0x1.8cf8e2p-7f);
verify("0.004221370676532388", 0x1.14a6dap-8f);
verify("0.002153817447833717", 0.002153817447833717f);
verify("0.0015924838953651488", 0x1.a175cap-10f);
verify("0.0008602388261351734", 0.0008602388261351734f);
verify("0.00036393293703440577", 0x1.7d9c82p-12f);
verify("0.00013746770127909258", 0.00013746770127909258f);
verify("16407.9462890625", 16407.9462890625f);
verify("1.1754947011469036e-38", 0x1.000006p-126f);
verify("7.0064923216240854e-46", 0x1p-149f);
verify("8388614.5", 8388614.5f);
verify("0e9999999999999999999999999999", 0.f);
verify("4.7019774032891500318749461488889827112746622270883500860350068251e-38",4.7019774032891500318749461488889827112746622270883500860350068251e-38f);
verify("3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679", 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679f);
verify("2.3509887016445750159374730744444913556373311135441750430175034126e-38", 2.3509887016445750159374730744444913556373311135441750430175034126e-38f);
verify("1", 1.f);
verify("7.0060e-46", 0.f);
verify("3.4028234664e38", 0x1.fffffep+127f);
verify("3.4028234665e38", 0x1.fffffep+127f);
verify("3.4028234666e38", 0x1.fffffep+127f);
verify("0.000000000000000000000000000000000000011754943508222875079687365372222456778186655567720875215087517062784172594547271728515625", 0.000000000000000000000000000000000000011754943508222875079687365372222456778186655567720875215087517062784172594547271728515625);
verify("0.00000000000000000000000000000000000000000000140129846432481707092372958328991613128026194187651577175706828388979108268586060148663818836212158203125", 0.00000000000000000000000000000000000000000000140129846432481707092372958328991613128026194187651577175706828388979108268586060148663818836212158203125f);
verify("0.00000000000000000000000000000000000002350988561514728583455765982071533026645717985517980855365926236850006129930346077117064851336181163787841796875", 0.00000000000000000000000000000000000002350988561514728583455765982071533026645717985517980855365926236850006129930346077117064851336181163787841796875f);
verify("0.00000000000000000000000000000000000001175494210692441075487029444849287348827052428745893333857174530571588870475618904265502351336181163787841796875", 0.00000000000000000000000000000000000001175494210692441075487029444849287348827052428745893333857174530571588870475618904265502351336181163787841796875f);
}
TEST_CASE("32bit.decimal_point") {
fast_float::parse_options options{};
options.decimal_point = ',';
// infinity
verify_options("3,5028234666e38", std::numeric_limits<float>::infinity());
// finites
verify_options("1,1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125", 0x1.2ced3p+0f);
verify_options("1,1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125e-38", 0x1.fffff8p-127f);
verify_options(append_zeros("1,1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125",655), 0x1.2ced3p+0f);
verify_options(append_zeros("1,1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125",656), 0x1.2ced3p+0f);
verify_options(append_zeros("1,1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125",1000), 0x1.2ced3p+0f);
std::string test_string;
test_string = append_zeros("1,1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125",655) + std::string("e-38");
verify_options(test_string, 0x1.fffff8p-127f);
test_string = append_zeros("1,1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125",656) + std::string("e-38");
verify_options(test_string, 0x1.fffff8p-127f);
test_string = append_zeros("1,1754941406275178592461758986628081843312458647327962400313859427181746759860647699724722770042717456817626953125",1000) + std::string("e-38");
verify_options(test_string, 0x1.fffff8p-127f);
verify_options("1,1754943508e-38", 1.1754943508e-38f);
verify_options("30219,0830078125", 30219.0830078125f);
verify_options("1,1754947011469036e-38", 0x1.000006p-126f);
verify_options("7,0064923216240854e-46", 0x1p-149f);
verify_options("8388614,5", 8388614.5f);
verify_options("0e9999999999999999999999999999", 0.f);
verify_options("4,7019774032891500318749461488889827112746622270883500860350068251e-38",4.7019774032891500318749461488889827112746622270883500860350068251e-38f);
verify_options("3,1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679", 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679f);
verify_options("2,3509887016445750159374730744444913556373311135441750430175034126e-38", 2.3509887016445750159374730744444913556373311135441750430175034126e-38f);
verify_options("1", 1.f);
verify_options("7,0060e-46", 0.f);
verify_options("3,4028234664e38", 0x1.fffffep+127f);
verify_options("3,4028234665e38", 0x1.fffffep+127f);
verify_options("3,4028234666e38", 0x1.fffffep+127f);
verify_options("0,000000000000000000000000000000000000011754943508222875079687365372222456778186655567720875215087517062784172594547271728515625", 0.000000000000000000000000000000000000011754943508222875079687365372222456778186655567720875215087517062784172594547271728515625);
verify_options("0,00000000000000000000000000000000000000000000140129846432481707092372958328991613128026194187651577175706828388979108268586060148663818836212158203125", 0.00000000000000000000000000000000000000000000140129846432481707092372958328991613128026194187651577175706828388979108268586060148663818836212158203125f);
verify_options("0,00000000000000000000000000000000000002350988561514728583455765982071533026645717985517980855365926236850006129930346077117064851336181163787841796875", 0.00000000000000000000000000000000000002350988561514728583455765982071533026645717985517980855365926236850006129930346077117064851336181163787841796875f);
verify_options("0,00000000000000000000000000000000000001175494210692441075487029444849287348827052428745893333857174530571588870475618904265502351336181163787841796875", 0.00000000000000000000000000000000000001175494210692441075487029444849287348827052428745893333857174530571588870475618904265502351336181163787841796875f);
}
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