xentara::utils::numeric::IeeeFloatingPointTraits< Type > Struct Template Reference

Information about an IEEE floating point type. More...

#include <xentara/utils/numeric/IeeeFloatingPointTraits.hpp>

Classes
struct	Bits
	A type that can store all the bits of the type. More...

Static Public Member Functions
static consteval auto	signBitMask () -> Bits
	Gets a bit mask for the sign bit.
static consteval auto	exponentBitMask () -> Bits
	Gets a bit mask for all of the used bits.
static consteval auto	mantissaBitMask () -> Bits
	Gets a bit mask for the sign bit.
static consteval auto	integerBitMask () -> Bits
	Gets a bit mask for the extra integer bit of x86 80-bit extended precision format.
static consteval auto	relevantBitMask () -> Bits
	Gets a bit mask for all of the relevant bits.
static consteval auto	zeroBits () -> Bits
	Gets the bits for the value 0.
static consteval auto	infinityBits () -> Bits
	Gets the bits for infinity.
static consteval auto	signalingNanBits () -> Bits
	Gets the bits for a signalling NaN.
static consteval auto	quietNanBits () -> Bits
	Gets the bits for a quiet NaN.
static constexpr auto	bits (const Type &value) -> Bits
	Gets the bits for a certain value.
static constexpr auto	fromBits (const Bits &bits) -> Type
	Gets the value represented by certain bits.

Static Public Attributes
static constexpr bool	kIsIeeeFloatingPoint
	Indicates that this is a IEEE floating point type.
static constexpr int	kSignBits
	The number of sign bits.
static constexpr int	kExponentBits
	The number of exponent bits.
static constexpr int	kMantissaBits
	The number of mantissa bits.
static constexpr int	kRelevantBits
	The total number of relevant bits.
static constexpr bool	kHasPadding
	Whether there are padding bits.

Detailed Description

template<typename Type>
struct xentara::utils::numeric::IeeeFloatingPointTraits< Type >

Information about an IEEE floating point type.

This is a specialization of IeeeFloatingPointTraits for actual IEEE floating point types.

Member Function Documentation

bits()

template<typename Type >

static constexpr auto xentara::utils::numeric::IeeeFloatingPointTraits< Type >::bits ( const Type &  value ) -> Bits

staticconstexpr

Gets the bits for a certain value.

This function is only available for IEEE floating point types

Parameters

value

The value.

Returns

The bits for the value. Any padding bits are set to 0.

exponentBitMask()

template<typename Type >

static consteval auto xentara::utils::numeric::IeeeFloatingPointTraits< Type >::exponentBitMask ( ) -> Bits

static

Gets a bit mask for all of the used bits.

This function is only available for IEEE floating point types

fromBits()

template<typename Type >

static constexpr auto xentara::utils::numeric::IeeeFloatingPointTraits< Type >::fromBits ( const Bits &  bits ) -> Type

staticconstexpr

Gets the value represented by certain bits.

This function is only available for IEEE floating point types

Parameters

bits

The bits.

Returns

The value represented by the bits.

infinityBits()

template<typename Type >

static consteval auto xentara::utils::numeric::IeeeFloatingPointTraits< Type >::infinityBits ( ) -> Bits

static

Gets the bits for infinity.

This function is only available for IEEE floating point types

Returns

The bits for infinity. Any padding bits are set to 0.

integerBitMask()

template<typename Type >

static consteval auto xentara::utils::numeric::IeeeFloatingPointTraits< Type >::integerBitMask ( ) -> Bits

static

Gets a bit mask for the extra integer bit of x86 80-bit extended precision format.

Contary to single, double, and quad precision floating points, x86 80-bit floats do not have an implicit leading 1 bit in the mantissa, but store this bit explicitly. This is called the integer bit, because it represents the integer part of the mantissa.

This function is only available for IEEE floating point types

Returns

A mask for the integer bit, or an empty mask if the type is not an x86 80-bit extended precision float.

mantissaBitMask()

template<typename Type >

static consteval auto xentara::utils::numeric::IeeeFloatingPointTraits< Type >::mantissaBitMask ( ) -> Bits

static

Gets a bit mask for the sign bit.

This function is only available for IEEE floating point types

quietNanBits()

template<typename Type >

static consteval auto xentara::utils::numeric::IeeeFloatingPointTraits< Type >::quietNanBits ( ) -> Bits

static

Gets the bits for a quiet NaN.

This function is only available for IEEE floating point types

Returns

The bits for a quiet NaN. Any padding bits are set to 0.

relevantBitMask()

template<typename Type >

static consteval auto xentara::utils::numeric::IeeeFloatingPointTraits< Type >::relevantBitMask ( ) -> Bits

static

Gets a bit mask for all of the relevant bits.

This function is only available for IEEE floating point types

signalingNanBits()

template<typename Type >

static consteval auto xentara::utils::numeric::IeeeFloatingPointTraits< Type >::signalingNanBits ( ) -> Bits

static

Gets the bits for a signalling NaN.

This function is only available for IEEE floating point types

Returns

The bits for a signalling NaN. Any padding bits are set to 0.

signBitMask()

template<typename Type >

static consteval auto xentara::utils::numeric::IeeeFloatingPointTraits< Type >::signBitMask ( ) -> Bits

static

Gets a bit mask for the sign bit.

This function is only available for IEEE floating point types

zeroBits()

template<typename Type >

static consteval auto xentara::utils::numeric::IeeeFloatingPointTraits< Type >::zeroBits ( ) -> Bits

static

Gets the bits for the value 0.

This function is only available for IEEE floating point types

Returns

The bits the value 0. Any padding bits are set to 0.

Member Data Documentation

kExponentBits

template<typename Type >

constexpr int xentara::utils::numeric::IeeeFloatingPointTraits< Type >::kExponentBits

staticconstexpr

The number of exponent bits.

For types that are not IEEE floating point types, this value is 0.

kHasPadding

template<typename Type >

constexpr bool xentara::utils::numeric::IeeeFloatingPointTraits< Type >::kHasPadding

staticconstexpr

Whether there are padding bits.

For types that are not IEEE floating point types, this value is false.

kIsIeeeFloatingPoint

template<typename Type >

constexpr bool xentara::utils::numeric::IeeeFloatingPointTraits< Type >::kIsIeeeFloatingPoint

staticconstexpr

Indicates that this is a IEEE floating point type.

kMantissaBits

template<typename Type >

constexpr int xentara::utils::numeric::IeeeFloatingPointTraits< Type >::kMantissaBits

staticconstexpr

The number of mantissa bits.

For types that are not IEEE floating point types, this value is 0.

kRelevantBits

template<typename Type >

constexpr int xentara::utils::numeric::IeeeFloatingPointTraits< Type >::kRelevantBits

staticconstexpr

The total number of relevant bits.

For types that are not IEEE floating point types, this value is 0.

kSignBits

template<typename Type >

constexpr int xentara::utils::numeric::IeeeFloatingPointTraits< Type >::kSignBits

staticconstexpr

The number of sign bits.

This value is 1 for all IEEE floating point types.

For types that are not IEEE floating point types, this value is 0.