v1::decimal Class Reference

Public Member Functions
constexpr	decimal (decimal const &other) noexcept=default
constexpr	decimal (decimal &&other) noexcept=default
constexpr decimal &	operator= (decimal const &other) noexcept=default
constexpr decimal &	operator= (decimal &&other) noexcept=default
constexpr	decimal (int exponent, long long mantissa) noexcept
constexpr	decimal (std::pair< int, long long > exponent_mantissa)
	decimal (std::string_view str)
	decimal (double x) noexcept
	decimal (float x) noexcept
constexpr	decimal (signed long long x)
constexpr	decimal (signed long x)
constexpr	decimal (signed int x)
constexpr	decimal (signed short x)
constexpr	decimal (signed char x)
constexpr	decimal (unsigned long long x)
constexpr	decimal (unsigned long x)
constexpr	decimal (unsigned int x)
constexpr	decimal (unsigned short x)
constexpr	decimal (unsigned char x)
constexpr decimal &	operator= (std::pair< int, long long > other) noexcept
decimal &	operator= (std::string_view str) noexcept
constexpr decimal &	operator= (double other) noexcept
constexpr decimal &	operator= (float other) noexcept
constexpr decimal &	operator= (signed long long other) noexcept
constexpr decimal &	operator= (signed long other) noexcept
constexpr decimal &	operator= (signed int other) noexcept
constexpr decimal &	operator= (signed short other) noexcept
constexpr decimal &	operator= (signed char other) noexcept
constexpr decimal &	operator= (unsigned long long other) noexcept
constexpr decimal &	operator= (unsigned long other) noexcept
constexpr decimal &	operator= (unsigned int other) noexcept
constexpr decimal &	operator= (unsigned short other) noexcept
constexpr decimal &	operator= (unsigned char other) noexcept
	operator signed long long () const noexcept
	operator signed long () const noexcept
	operator signed int () const noexcept
	operator signed short () const noexcept
	operator signed char () const noexcept
	operator unsigned long long () const noexcept
	operator unsigned long () const noexcept
	operator unsigned int () const noexcept
	operator unsigned short () const noexcept
	operator unsigned char () const noexcept
	operator long double () const noexcept
	operator double () const noexcept
	operator float () const noexcept
	operator bool () const noexcept
std::size_t	hash () const noexcept
constexpr int	exponent () const noexcept
	Extract exponent from value.
constexpr long long	mantissa () const noexcept
	Extract mantissa from value.
constexpr std::pair< int, long long >	exponent_mantissa () const noexcept
constexpr decimal	normalize () const noexcept
	Return a normalized decimal.
decimal &	operator+= (decimal rhs) noexcept
decimal &	operator-= (decimal rhs) noexcept
decimal &	operator*= (decimal rhs) noexcept
decimal &	operator/= (decimal rhs) noexcept

Static Public Attributes
static constexpr int	mantissa_bits = 56
static constexpr int	exponent_bits = 8
static constexpr int	exponent_max = 127
static constexpr int	exponent_min = -128

Friends
bool	operator== (decimal lhs, decimal rhs) noexcept
auto	operator<=> (decimal lhs, decimal rhs) noexcept
constexpr decimal	operator- (decimal rhs) noexcept
decimal	operator+ (decimal lhs, decimal rhs) noexcept
decimal	operator- (decimal lhs, decimal rhs) noexcept
decimal	operator* (decimal lhs, decimal rhs) noexcept
decimal	operator/ (decimal lhs, decimal rhs) noexcept
decimal	operator% (decimal lhs, decimal rhs) noexcept
std::string	to_string (decimal x) noexcept
std::ostream &	operator<< (std::ostream &lhs, decimal rhs)

Member Function Documentation

exponent()

int v1::decimal::exponent ( ) const

inlinenodiscardconstexprnoexcept

Extract exponent from value.

The exponent is encoded in the least significant bits so that only a MOVSX instruction is needed.

mantissa()

long long v1::decimal::mantissa ( ) const

inlinenodiscardconstexprnoexcept

Extract mantissa from value.

The mantissa is encoded in the most significant bits so that only a single SAR instruction with a small shift value is needed.

normalize()

decimal v1::decimal::normalize ( ) const

inlinenodiscardconstexprnoexcept

Return a normalized decimal.

The returned decimal will not have trailing zeros.

Returns

A normalized decimal.

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The documentation for this class was generated from the following file:

• hikogui/src/hikogui/numeric/decimal.hpp