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renamed the function, cleaned up return type

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Pavel Novikov 2025-09-05 13:27:15 +03:00
parent 763558b9ac
commit 20a7383442
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3 changed files with 15 additions and 33 deletions
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10
include/fast_float/fast_float.h
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@ -58,16 +58,12 @@ from_chars_advanced(UC const *first, UC const *last, T &value,
* The implementation does not throw and does not allocate memory (e.g., with * The implementation does not throw and does not allocate memory (e.g., with
* `new` or `malloc`). * `new` or `malloc`).
*/ */
FASTFLOAT_CONSTEXPR20 inline double
integer_times_pow10(uint64_t mantissa, int decimal_exponent) noexcept;
FASTFLOAT_CONSTEXPR20 inline FASTFLOAT_CONSTEXPR20 inline
typename std::enable_if<is_supported_float_type<double>::value, typename std::enable_if<is_supported_float_type<double>::value,
double>::type double>::type
multiply_integer_and_power_of_10(uint64_t mantissa, integer_times_pow10(int64_t mantissa, int decimal_exponent) noexcept;
int decimal_exponent) noexcept;
FASTFLOAT_CONSTEXPR20 inline
typename std::enable_if<is_supported_float_type<double>::value,
double>::type
multiply_integer_and_power_of_10(int64_t mantissa,
int decimal_exponent) noexcept;
/** /**
* from_chars for integer types. * from_chars for integer types.

34
include/fast_float/parse_number.h
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@ -344,11 +344,8 @@ from_chars(UC const *first, UC const *last, T &value, int base) noexcept {
return from_chars_advanced(first, last, value, options); return from_chars_advanced(first, last, value, options);
} }
FASTFLOAT_CONSTEXPR20 inline FASTFLOAT_CONSTEXPR20 inline double
typename std::enable_if<is_supported_float_type<double>::value, integer_times_pow10(uint64_t mantissa, int decimal_exponent) noexcept {
double>::type
multiply_integer_and_power_of_10(uint64_t mantissa,
int decimal_exponent) noexcept {
double value; double value;
if (clinger_fast_path_impl(mantissa, decimal_exponent, false, value)) if (clinger_fast_path_impl(mantissa, decimal_exponent, false, value))
return value; return value;
@ -359,11 +356,8 @@ FASTFLOAT_CONSTEXPR20 inline
return value; return value;
} }
FASTFLOAT_CONSTEXPR20 inline FASTFLOAT_CONSTEXPR20 inline double
typename std::enable_if<is_supported_float_type<double>::value, integer_times_pow10(int64_t mantissa, int decimal_exponent) noexcept {
double>::type
multiply_integer_and_power_of_10(int64_t mantissa,
int decimal_exponent) noexcept {
const bool is_negative = mantissa < 0; const bool is_negative = mantissa < 0;
const uint64_t m = static_cast<uint64_t>(is_negative ? -mantissa : mantissa); const uint64_t m = static_cast<uint64_t>(is_negative ? -mantissa : mantissa);
@ -379,22 +373,14 @@ FASTFLOAT_CONSTEXPR20 inline
// the following overloads are here to avoid surprising ambiguity for int, // the following overloads are here to avoid surprising ambiguity for int,
// unsigned, etc. // unsigned, etc.
FASTFLOAT_CONSTEXPR20 inline FASTFLOAT_CONSTEXPR20 inline double
typename std::enable_if<is_supported_float_type<double>::value, integer_times_pow10(unsigned mantissa, int decimal_exponent) noexcept {
double>::type return integer_times_pow10(static_cast<uint64_t>(mantissa), decimal_exponent);
multiply_integer_and_power_of_10(unsigned mantissa,
int decimal_exponent) noexcept {
return multiply_integer_and_power_of_10(static_cast<uint64_t>(mantissa),
decimal_exponent);
} }
FASTFLOAT_CONSTEXPR20 inline FASTFLOAT_CONSTEXPR20 inline double
typename std::enable_if<is_supported_float_type<double>::value, integer_times_pow10(int mantissa, int decimal_exponent) noexcept {
double>::type return integer_times_pow10(static_cast<int64_t>(mantissa), decimal_exponent);
multiply_integer_and_power_of_10(int mantissa,
int decimal_exponent) noexcept {
return multiply_integer_and_power_of_10(static_cast<int64_t>(mantissa),
decimal_exponent);
} }
template <typename T, typename UC> template <typename T, typename UC>

4
tests/basictest.cpp
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@ -2091,7 +2091,7 @@ void verify_integer_multiplication_by_power_of_10(Int mantissa,
int decimal_exponent, int decimal_exponent,
double expected) { double expected) {
const double actual = const double actual =
fast_float::multiply_integer_and_power_of_10(mantissa, decimal_exponent); fast_float::integer_times_pow10(mantissa, decimal_exponent);
INFO("m * 10^e=" << mantissa << " * 10^" << decimal_exponent INFO("m * 10^e=" << mantissa << " * 10^" << decimal_exponent
<< "\n" << "\n"
@ -2120,7 +2120,7 @@ void verify_integer_multiplication_by_power_of_10(Int mantissa,
expected_result); expected_result);
} }
TEST_CASE("multiply_integer_and_power_of_10") { TEST_CASE("integer_times_pow10") {
// explicitly verifying API with different types of integers // explicitly verifying API with different types of integers
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<int8_t>(-31, -1, -3.1); verify_integer_multiplication_by_power_of_10<int8_t>(-31, -1, -3.1);