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cleaned up tests

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This commit is contained in:
Pavel Novikov 2025-09-03 13:34:57 +03:00
parent 6be07d66a8
commit 763558b9ac
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1 changed files with 78 additions and 41 deletions
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109
tests/basictest.cpp
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@ -2087,7 +2087,7 @@ TEST_CASE("bfloat16.general") {
#endif
template <typename Int>
void integer_multiplication_by_power_of_10_test(Int mantissa,
void verify_integer_multiplication_by_power_of_10(Int mantissa,
int decimal_exponent,
double expected) {
const double actual =
@ -2105,34 +2105,41 @@ void integer_multiplication_by_power_of_10_test(Int mantissa,
CHECK_EQ(actual, expected);
}
#define verify_integer_multiplication_by_power_of_10(mantissa, \
decimal_exponent) \
do { \
integer_multiplication_by_power_of_10_test(mantissa, decimal_exponent, \
mantissa##e##decimal_exponent); \
} while (false)
template <typename Int>
void verify_integer_multiplication_by_power_of_10(Int mantissa,
int decimal_exponent) {
std::string constructed_string =
std::to_string(mantissa) + "e" + std::to_string(decimal_exponent);
double expected_result;
const auto result = fast_float::from_chars(
constructed_string.data(),
constructed_string.data() + constructed_string.size(), expected_result);
if (result.ec != std::errc())
INFO("Failed to parse: " << constructed_string);
verify_integer_multiplication_by_power_of_10(mantissa, decimal_exponent,
expected_result);
}
TEST_CASE("multiply_integer_and_power_of_10") {
// explicitly verifying API with different types of integers
integer_multiplication_by_power_of_10_test<char>(31, -1, 3.1);
integer_multiplication_by_power_of_10_test<unsigned char>(31, -1, 3.1);
integer_multiplication_by_power_of_10_test<signed char>(31, -1, 3.1);
integer_multiplication_by_power_of_10_test<signed char>(-31, -1, -3.1);
integer_multiplication_by_power_of_10_test<int16_t>(31415, -4, 3.1415);
integer_multiplication_by_power_of_10_test<int16_t>(-31415, -4, -3.1415);
integer_multiplication_by_power_of_10_test<uint16_t>(31415, -4, 3.1415);
integer_multiplication_by_power_of_10_test<int32_t>(314159265, -8,
verify_integer_multiplication_by_power_of_10<int8_t>(31, -1, 3.1);
verify_integer_multiplication_by_power_of_10<int8_t>(-31, -1, -3.1);
verify_integer_multiplication_by_power_of_10<uint8_t>(31, -1, 3.1);
verify_integer_multiplication_by_power_of_10<int16_t>(31415, -4, 3.1415);
verify_integer_multiplication_by_power_of_10<int16_t>(-31415, -4, -3.1415);
verify_integer_multiplication_by_power_of_10<uint16_t>(31415, -4, 3.1415);
verify_integer_multiplication_by_power_of_10<int32_t>(314159265, -8,
3.14159265);
integer_multiplication_by_power_of_10_test<int32_t>(-314159265, -8,
verify_integer_multiplication_by_power_of_10<int32_t>(-314159265, -8,
-3.14159265);
integer_multiplication_by_power_of_10_test<uint32_t>(3141592653, -9,
verify_integer_multiplication_by_power_of_10<uint32_t>(3141592653, -9,
3.141592653);
integer_multiplication_by_power_of_10_test<int64_t>(3141592653589793238, -18,
3.141592653589793238);
integer_multiplication_by_power_of_10_test<int64_t>(-3141592653589793238, -18,
-3.141592653589793238);
integer_multiplication_by_power_of_10_test<uint64_t>(3141592653589793238, -18,
3.141592653589793238);
verify_integer_multiplication_by_power_of_10<int64_t>(
3141592653589793238, -18, 3.141592653589793238);
verify_integer_multiplication_by_power_of_10<int64_t>(
-3141592653589793238, -18, -3.141592653589793238);
verify_integer_multiplication_by_power_of_10<uint64_t>(
3141592653589793238, -18, 3.141592653589793238);
for (int mode : {FE_UPWARD, FE_DOWNWARD, FE_TOWARDZERO, FE_TONEAREST}) {
fesetround(mode);
@ -2151,48 +2158,78 @@ TEST_CASE("multiply_integer_and_power_of_10") {
verify_integer_multiplication_by_power_of_10(-1, -1);
verify_integer_multiplication_by_power_of_10(-1, 1);
verify_integer_multiplication_by_power_of_10(1, -1);
verify_integer_multiplication_by_power_of_10(-1, -1);
integer_multiplication_by_power_of_10_test(49406564584124654, -340,
DBL_TRUE_MIN);
integer_multiplication_by_power_of_10_test(22250738585072014, -324,
DBL_MIN);
integer_multiplication_by_power_of_10_test(17976931348623158, 292, DBL_MAX);
verify_integer_multiplication_by_power_of_10(
49406564584124654, -340, std::numeric_limits<double>::denorm_min());
verify_integer_multiplication_by_power_of_10(
22250738585072014, -324, std::numeric_limits<double>::min());
verify_integer_multiplication_by_power_of_10(
17976931348623158, 292, std::numeric_limits<double>::max());
// DBL_TRUE_MIN / 2 underflows to 0
integer_multiplication_by_power_of_10_test(49406564584124654 / 2, -340, 0.);
verify_integer_multiplication_by_power_of_10(49406564584124654 / 2, -340,
0.);
// DBL_TRUE_MIN / 2 + 0.0000000000000001e-324 rounds to DBL_TRUE_MIN
integer_multiplication_by_power_of_10_test(49406564584124654 / 2 + 1, -340,
DBL_TRUE_MIN);
verify_integer_multiplication_by_power_of_10(
49406564584124654 / 2 + 1, -340,
std::numeric_limits<double>::denorm_min());
// DBL_MAX + 0.0000000000000001e308 overflows to infinity
integer_multiplication_by_power_of_10_test(
verify_integer_multiplication_by_power_of_10(
17976931348623158 + 1, 292, std::numeric_limits<double>::infinity());
// DBL_MAX + 0.00000000000000001e308 overflows to infinity
verify_integer_multiplication_by_power_of_10(
179769313486231580 + 1, 291, std::numeric_limits<double>::infinity());
// loosely verifying correct rounding of 1 to 64 bits
// worth of significant digits
verify_integer_multiplication_by_power_of_10(1, 42);
verify_integer_multiplication_by_power_of_10(1, -42);
verify_integer_multiplication_by_power_of_10(12, 42);
verify_integer_multiplication_by_power_of_10(12, -42);
verify_integer_multiplication_by_power_of_10(123, 42);
verify_integer_multiplication_by_power_of_10(123, -42);
verify_integer_multiplication_by_power_of_10(1234, 42);
verify_integer_multiplication_by_power_of_10(1234, -42);
verify_integer_multiplication_by_power_of_10(12345, 42);
verify_integer_multiplication_by_power_of_10(12345, -42);
verify_integer_multiplication_by_power_of_10(123456, 42);
verify_integer_multiplication_by_power_of_10(123456, -42);
verify_integer_multiplication_by_power_of_10(1234567, 42);
verify_integer_multiplication_by_power_of_10(1234567, -42);
verify_integer_multiplication_by_power_of_10(12345678, 42);
verify_integer_multiplication_by_power_of_10(12345678, -42);
verify_integer_multiplication_by_power_of_10(123456789, 42);
verify_integer_multiplication_by_power_of_10(1234567890, 42);
verify_integer_multiplication_by_power_of_10(1234567890, -42);
verify_integer_multiplication_by_power_of_10(12345678901, 42);
verify_integer_multiplication_by_power_of_10(12345678901, -42);
verify_integer_multiplication_by_power_of_10(123456789012, 42);
verify_integer_multiplication_by_power_of_10(123456789012, -42);
verify_integer_multiplication_by_power_of_10(1234567890123, 42);
verify_integer_multiplication_by_power_of_10(1234567890123, -42);
verify_integer_multiplication_by_power_of_10(12345678901234, 42);
verify_integer_multiplication_by_power_of_10(12345678901234, -42);
verify_integer_multiplication_by_power_of_10(123456789012345, 42);
verify_integer_multiplication_by_power_of_10(123456789012345, -42);
verify_integer_multiplication_by_power_of_10(1234567890123456, 42);
verify_integer_multiplication_by_power_of_10(1234567890123456, -42);
verify_integer_multiplication_by_power_of_10(12345678901234567, 42);
verify_integer_multiplication_by_power_of_10(12345678901234567, -42);
verify_integer_multiplication_by_power_of_10(123456789012345678, 42);
verify_integer_multiplication_by_power_of_10(123456789012345678, -42);
verify_integer_multiplication_by_power_of_10(1234567890123456789, 42);
verify_integer_multiplication_by_power_of_10(12345678901234567890, 42);
// ULLONG_MAX
verify_integer_multiplication_by_power_of_10(18446744073709551615, 42);
verify_integer_multiplication_by_power_of_10(1234567890123456789, -42);
verify_integer_multiplication_by_power_of_10(12345678901234567890ull, 42);
verify_integer_multiplication_by_power_of_10(12345678901234567890ull, -42);
verify_integer_multiplication_by_power_of_10(
std::numeric_limits<int64_t>::max(), 42);
verify_integer_multiplication_by_power_of_10(
std::numeric_limits<int64_t>::max(), -42);
verify_integer_multiplication_by_power_of_10(
std::numeric_limits<uint64_t>::max(), 42);
verify_integer_multiplication_by_power_of_10(
std::numeric_limits<uint64_t>::max(), -42);
}
}