Classes
struct	cv::softdouble

struct	cv::softfloat

Functions
	cv::softdouble::softdouble ()
	Default constructor. More...

	cv::softdouble::softdouble (const softdouble &c)
	Copy constructor. More...

	cv::softdouble::softdouble (const uint32_t)
	Construct from integer. More...

	cv::softdouble::softdouble (const uint64_t)

	cv::softdouble::softdouble (const int32_t)

	cv::softdouble::softdouble (const int64_t)

	cv::softdouble::softdouble (const double a)
	Construct from double. More...

	cv::softfloat::softfloat ()
	Default constructor. More...

	cv::softfloat::softfloat (const softfloat &c)
	Copy constructor. More...

	cv::softfloat::softfloat (const uint32_t)
	Construct from integer. More...

	cv::softfloat::softfloat (const uint64_t)

	cv::softfloat::softfloat (const int32_t)

	cv::softfloat::softfloat (const int64_t)

	cv::softfloat::softfloat (const float a)
	Construct from float. More...

softfloat	cv::abs (softfloat a)
	Absolute value. More...

softdouble	cv::abs (softdouble a)

softfloat	cv::cbrt (const softfloat &a)
	Cube root. More...

softdouble	cv::cos (const softdouble &a)
	Cosine. More...

static softfloat	cv::softfloat::eps ()
	Difference between 1 and next representable value. More...

static softdouble	cv::softdouble::eps ()
	Difference between 1 and next representable value. More...

softfloat	cv::exp (const softfloat &a)
	Exponent. More...

softdouble	cv::exp (const softdouble &a)

static const softfloat	cv::softfloat::fromRaw (const uint32_t a)
	Construct from raw. More...

static softdouble	cv::softdouble::fromRaw (const uint64_t a)
	Construct from raw. More...

int	cv::softfloat::getExp () const
	Get 0-based exponent. More...

int	cv::softdouble::getExp () const
	Get 0-based exponent. More...

softfloat	cv::softfloat::getFrac () const
	Get a fraction part. More...

softdouble	cv::softdouble::getFrac () const
	Get a fraction part. More...

bool	cv::softfloat::getSign () const
	Get sign bit. More...

bool	cv::softdouble::getSign () const
	Get sign bit. More...

static softfloat	cv::softfloat::inf ()
	Positive infinity constant. More...

static softdouble	cv::softdouble::inf ()
	Positive infinity constant. More...

bool	cv::softfloat::isInf () const
	Inf state indicator. More...

bool	cv::softdouble::isInf () const
	Inf state indicator. More...

bool	cv::softfloat::isNaN () const
	NaN state indicator. More...

bool	cv::softdouble::isNaN () const
	NaN state indicator. More...

bool	cv::softfloat::isSubnormal () const
	Subnormal number indicator. More...

bool	cv::softdouble::isSubnormal () const
	Subnormal number indicator. More...

softfloat	cv::log (const softfloat &a)
	Natural logarithm. More...

softdouble	cv::log (const softdouble &a)

static softfloat	cv::softfloat::max ()
	Biggest finite value. More...

static softdouble	cv::softdouble::max ()
	Biggest finite value. More...

softfloat	cv::max (const softfloat &a, const softfloat &b)

softdouble	cv::max (const softdouble &a, const softdouble &b)

static softfloat	cv::softfloat::min ()
	Smallest normalized value. More...

static softdouble	cv::softdouble::min ()
	Smallest normalized value. More...

softfloat	cv::min (const softfloat &a, const softfloat &b)
	Min and Max functions. More...

softdouble	cv::min (const softdouble &a, const softdouble &b)

softfloat	cv::mulAdd (const softfloat &a, const softfloat &b, const softfloat &c)
	Fused Multiplication and Addition. More...

softdouble	cv::mulAdd (const softdouble &a, const softdouble &b, const softdouble &c)

static softfloat	cv::softfloat::nan ()
	Default NaN constant. More...

static softdouble	cv::softdouble::nan ()
	Default NaN constant. More...

static softfloat	cv::softfloat::one ()
	One constant. More...

static softdouble	cv::softdouble::one ()
	One constant. More...

	cv::softdouble::operator double () const

	cv::softfloat::operator float () const

	cv::softfloat::operator softdouble () const
	Type casts. More...

	cv::softdouble::operator softfloat () const
	Type casts. More...

bool	cv::softfloat::operator!= (const softfloat &) const

bool	cv::softdouble::operator!= (const softdouble &) const

softfloat	cv::softfloat::operator% (const softfloat &) const
	Remainder operator. More...

softdouble	cv::softdouble::operator% (const softdouble &) const
	Remainder operator. More...

softfloat &	cv::softfloat::operator%= (const softfloat &a)

softdouble &	cv::softdouble::operator%= (const softdouble &a)

softfloat	cv::softfloat::operator* (const softfloat &) const

softdouble	cv::softdouble::operator* (const softdouble &) const

softfloat &	cv::softfloat::operator*= (const softfloat &a)

softdouble &	cv::softdouble::operator*= (const softdouble &a)

softfloat	cv::softfloat::operator+ (const softfloat &) const
	Basic arithmetics. More...

softdouble	cv::softdouble::operator+ (const softdouble &) const
	Basic arithmetics. More...

softfloat &	cv::softfloat::operator+= (const softfloat &a)

softdouble &	cv::softdouble::operator+= (const softdouble &a)

softfloat	cv::softfloat::operator- (const softfloat &) const

softfloat	cv::softfloat::operator- () const

softdouble	cv::softdouble::operator- (const softdouble &) const

softdouble	cv::softdouble::operator- () const

softfloat &	cv::softfloat::operator-= (const softfloat &a)

softdouble &	cv::softdouble::operator-= (const softdouble &a)

softfloat	cv::softfloat::operator/ (const softfloat &) const

softdouble	cv::softdouble::operator/ (const softdouble &) const

softfloat &	cv::softfloat::operator/= (const softfloat &a)

softdouble &	cv::softdouble::operator/= (const softdouble &a)

bool	cv::softfloat::operator< (const softfloat &) const

bool	cv::softdouble::operator< (const softdouble &) const

bool	cv::softfloat::operator<= (const softfloat &) const

bool	cv::softdouble::operator<= (const softdouble &) const

softfloat &	cv::softfloat::operator= (const softfloat &c)
	Assign constructor. More...

softdouble &	cv::softdouble::operator= (const softdouble &c)
	Assign constructor. More...

bool	cv::softfloat::operator== (const softfloat &) const
	Comparison operations. More...

bool	cv::softdouble::operator== (const softdouble &) const
	Comparison operations. More...

bool	cv::softfloat::operator> (const softfloat &) const

bool	cv::softdouble::operator> (const softdouble &) const

bool	cv::softfloat::operator>= (const softfloat &) const

bool	cv::softdouble::operator>= (const softdouble &) const

static softfloat	cv::softfloat::pi ()
	Correct pi approximation. More...

static softdouble	cv::softdouble::pi ()
	Correct pi approximation. More...

softfloat	cv::pow (const softfloat &a, const softfloat &b)
	Raising to the power. More...

softdouble	cv::pow (const softdouble &a, const softdouble &b)

template<typename _Tp >
static _Tp	cv::saturate_cast (softfloat a)
	Saturate casts. More...

template<typename _Tp >
static _Tp	cv::saturate_cast (softdouble a)

template<>
schar	cv::saturate_cast< schar > (softfloat a)

template<>
schar	cv::saturate_cast< schar > (softdouble a)

template<>
short	cv::saturate_cast< short > (softfloat a)

template<>
short	cv::saturate_cast< short > (softdouble a)

template<>
uchar	cv::saturate_cast< uchar > (softfloat a)

template<>
uchar	cv::saturate_cast< uchar > (softdouble a)

template<>
unsigned	cv::saturate_cast< unsigned > (softfloat a)
	Saturate cast to unsigned integer We intentionally do not clip negative numbers, to make -1 become 0xffffffff etc. More...

template<>
unsigned	cv::saturate_cast< unsigned > (softdouble a)

template<>
ushort	cv::saturate_cast< ushort > (softfloat a)

template<>
ushort	cv::saturate_cast< ushort > (softdouble a)

softfloat	cv::softfloat::setExp (int e) const
	Construct a copy with new 0-based exponent. More...

softdouble	cv::softdouble::setExp (int e) const
	Construct a copy with new 0-based exponent. More...

softfloat	cv::softfloat::setFrac (const softfloat &s) const
	Construct a copy with provided significand. More...

softdouble	cv::softdouble::setFrac (const softdouble &s) const
	Construct a copy with provided significand. More...

softfloat	cv::softfloat::setSign (bool sign) const
	Construct a copy with new sign bit. More...

softdouble	cv::softdouble::setSign (bool sign) const
	Construct a copy with new sign bit. More...

softdouble	cv::sin (const softdouble &a)
	Sine. More...

softfloat	cv::sqrt (const softfloat &a)
	Square root. More...

softdouble	cv::sqrt (const softdouble &a)

static softfloat	cv::softfloat::zero ()
	Zero constant. More...

static softdouble	cv::softdouble::zero ()
	Zero constant. More...

Variables
uint32_t	cv::softfloat::v

uint64_t	cv::softdouble::v

Detailed Description

SoftFloat is a software implementation of floating-point calculations according to IEEE 754 standard. All calculations are done in integers, that's why they are machine-independent and bit-exact. This library can be useful in accuracy-critical parts like look-up tables generation, tests, etc. OpenCV contains a subset of SoftFloat partially rewritten to C++.

Types

There are two basic types: softfloat and softdouble. These types are binary compatible with float and double types respectively and support conversions to/from them. Other types from original SoftFloat library like fp16 or fp128 were thrown away as well as quiet/signaling NaN support, on-the-fly rounding mode switch and exception flags (though exceptions can be implemented in the future).

Operations

Both types support the following:

Construction from signed and unsigned 32-bit and 64 integers, float/double or raw binary representation
Conversions betweeen each other, to float or double and to int using cvRound, cvTrunc, cvFloor, cvCeil or a bunch of saturate_cast functions
Add, subtract, multiply, divide, remainder, square root, FMA with absolute precision
Comparison operations
Explicit sign, exponent and significand manipulation through get/set methods, number state indicators (isInf, isNan, isSubnormal)
Type-specific constants like eps, minimum/maximum value, best pi approximation, etc.
min(), max(), abs(), exp(), log() and pow() functions

Function Documentation

◆ softdouble() [1/7]

cv::softdouble::softdouble ( )

inline

Default constructor.

◆ softdouble() [2/7]

cv::softdouble::softdouble ( const softdouble & c )

inline

Copy constructor.

◆ softdouble() [3/7]

cv::softdouble::softdouble ( const uint32_t )

explicit

Construct from integer.

◆ softdouble() [4/7]

cv::softdouble::softdouble ( const uint64_t )

explicit

◆ softdouble() [5/7]

cv::softdouble::softdouble ( const int32_t )

explicit

◆ softdouble() [6/7]

cv::softdouble::softdouble ( const int64_t )

explicit

◆ softdouble() [7/7]

cv::softdouble::softdouble ( const double a )

inlineexplicit

Construct from double.

◆ softfloat() [1/7]

cv::softfloat::softfloat ( )

inline

Default constructor.

◆ softfloat() [2/7]

cv::softfloat::softfloat ( const softfloat & c )

inline

Copy constructor.

◆ softfloat() [3/7]

cv::softfloat::softfloat ( const uint32_t )

explicit

Construct from integer.

◆ softfloat() [4/7]

cv::softfloat::softfloat ( const uint64_t )

explicit

◆ softfloat() [5/7]

cv::softfloat::softfloat ( const int32_t )

explicit

◆ softfloat() [6/7]

cv::softfloat::softfloat ( const int64_t )

explicit

◆ softfloat() [7/7]

cv::softfloat::softfloat ( const float a )

inlineexplicit

Construct from float.

◆ abs() [1/2]

softfloat cv::abs ( softfloat a )

inline

Absolute value.

◆ abs() [2/2]

softdouble cv::abs ( softdouble a )

inline

◆ cbrt()

softfloat cv::cbrt ( const softfloat & a )

Cube root.

Special cases:

cbrt(NaN) is NaN
cbrt(+/-Inf) is +/-Inf

◆ cos()

softdouble cv::cos ( const softdouble & a )

Cosine.

Special cases:

cos(Inf) or cos(NaN) is NaN
cos(x) == +/- 1 when cos(x) is close to +/- 1

Examples:: contours2.cpp, image_alignment.cpp, and kalman.cpp.

◆ eps() [1/2]

static softfloat cv::softfloat::eps ( )

inlinestatic

Difference between 1 and next representable value.

◆ eps() [2/2]

static softdouble cv::softdouble::eps ( )

inlinestatic

Difference between 1 and next representable value.

◆ exp() [1/2]

softfloat cv::exp ( const softfloat & a )

Exponent.

Special cases:

exp(NaN) is NaN
exp(-Inf) == 0
exp(+Inf) == +Inf

◆ exp() [2/2]

softdouble cv::exp ( const softdouble & a )

◆ fromRaw() [1/2]

static const softfloat cv::softfloat::fromRaw ( const uint32_t a )

inlinestatic

Construct from raw.

Builds new value from raw binary representation

◆ fromRaw() [2/2]

static softdouble cv::softdouble::fromRaw ( const uint64_t a )

inlinestatic

Construct from raw.

Builds new value from raw binary representation

◆ getExp() [1/2]

int cv::softfloat::getExp ( ) const

inline

Get 0-based exponent.

◆ getExp() [2/2]

int cv::softdouble::getExp ( ) const

inline

Get 0-based exponent.

◆ getFrac() [1/2]

softfloat cv::softfloat::getFrac ( ) const

inline

Get a fraction part.

Returns a number 1 <= x < 2 with the same significand

◆ getFrac() [2/2]

softdouble cv::softdouble::getFrac ( ) const

inline

Get a fraction part.

Returns a number 1 <= x < 2 with the same significand

◆ getSign() [1/2]

bool cv::softfloat::getSign ( ) const

inline

Get sign bit.

◆ getSign() [2/2]

bool cv::softdouble::getSign ( ) const

inline

Get sign bit.

◆ inf() [1/2]

static softfloat cv::softfloat::inf ( )

inlinestatic

Positive infinity constant.

◆ inf() [2/2]

static softdouble cv::softdouble::inf ( )

inlinestatic

Positive infinity constant.

◆ isInf() [1/2]

bool cv::softfloat::isInf ( ) const

inline

Inf state indicator.

◆ isInf() [2/2]

bool cv::softdouble::isInf ( ) const

inline

Inf state indicator.

◆ isNaN() [1/2]

bool cv::softfloat::isNaN ( ) const

inline

NaN state indicator.

◆ isNaN() [2/2]

bool cv::softdouble::isNaN ( ) const

inline

NaN state indicator.

◆ isSubnormal() [1/2]

bool cv::softfloat::isSubnormal ( ) const

inline

Subnormal number indicator.

◆ isSubnormal() [2/2]

bool cv::softdouble::isSubnormal ( ) const

inline

Subnormal number indicator.

◆ log() [1/2]

softfloat cv::log ( const softfloat & a )

Natural logarithm.

Special cases:

log(NaN), log(x < 0) are NaN
log(0) == -Inf

◆ log() [2/2]

softdouble cv::log ( const softdouble & a )

◆ max() [1/4]

static softfloat cv::softfloat::max ( )

inlinestatic

Biggest finite value.

◆ max() [2/4]

static softdouble cv::softdouble::max ( )

inlinestatic

Biggest finite value.

◆ max() [3/4]

softfloat cv::max	(	const softfloat &	a,
		const softfloat &	b
	)

inline

Examples:: grabcut.cpp, and warpPerspective_demo.cpp.

◆ max() [4/4]

softdouble cv::max	(	const softdouble &	a,
		const softdouble &	b
	)

inline

◆ min() [1/4]

static softfloat cv::softfloat::min ( )

inlinestatic

Smallest normalized value.

◆ min() [2/4]

static softdouble cv::softdouble::min ( )

inlinestatic

Smallest normalized value.

◆ min() [3/4]

softfloat cv::min	(	const softfloat &	a,
		const softfloat &	b
	)

inline

Min and Max functions.

Examples:: falsecolor.cpp, and grabcut.cpp.

◆ min() [4/4]

softdouble cv::min	(	const softdouble &	a,
		const softdouble &	b
	)

inline

◆ mulAdd() [1/2]

softfloat cv::mulAdd	(	const softfloat &	a,
		const softfloat &	b,
		const softfloat &	c
	)

Fused Multiplication and Addition.

Computes (a*b)+c with single rounding

◆ mulAdd() [2/2]

softdouble cv::mulAdd	(	const softdouble &	a,
		const softdouble &	b,
		const softdouble &	c
	)

◆ nan() [1/2]

static softfloat cv::softfloat::nan ( )

inlinestatic

Default NaN constant.

◆ nan() [2/2]

static softdouble cv::softdouble::nan ( )

inlinestatic

Default NaN constant.

◆ one() [1/2]

static softfloat cv::softfloat::one ( )

inlinestatic

One constant.

◆ one() [2/2]

static softdouble cv::softdouble::one ( )

inlinestatic

One constant.

◆ operator double()

cv::softdouble::operator double ( ) const

inline

◆ operator float()

cv::softfloat::operator float ( ) const

inline

◆ operator softdouble()

cv::softfloat::operator softdouble ( ) const

Type casts.

◆ operator softfloat()

cv::softdouble::operator softfloat ( ) const

Type casts.

◆ operator!=() [1/2]

bool cv::softfloat::operator!= ( const softfloat & ) const

◆ operator!=() [2/2]

bool cv::softdouble::operator!= ( const softdouble & ) const

◆ operator%() [1/2]

softfloat cv::softfloat::operator% ( const softfloat & ) const

Remainder operator.

A quote from original SoftFloat manual:

The IEEE Standard remainder operation computes the value a - n * b, where n is the integer closest to a / b. If a / b is exactly halfway between two integers, n is the even integer closest to a / b. The IEEE Standard’s remainder operation is always exact and so requires no rounding. Depending on the relative magnitudes of the operands, the remainder functions can take considerably longer to execute than the other SoftFloat functions. This is an inherent characteristic of the remainder operation itself and is not a flaw in the SoftFloat implementation.

◆ operator%() [2/2]

softdouble cv::softdouble::operator% ( const softdouble & ) const

Remainder operator.

A quote from original SoftFloat manual:

The IEEE Standard remainder operation computes the value a - n * b, where n is the integer closest to a / b. If a / b is exactly halfway between two integers, n is the even integer closest to a / b. The IEEE Standard’s remainder operation is always exact and so requires no rounding. Depending on the relative magnitudes of the operands, the remainder functions can take considerably longer to execute than the other SoftFloat functions. This is an inherent characteristic of the remainder operation itself and is not a flaw in the SoftFloat implementation.

◆ operator%=() [1/2]

softfloat& cv::softfloat::operator%= ( const softfloat & a )

inline

◆ operator%=() [2/2]

softdouble& cv::softdouble::operator%= ( const softdouble & a )

inline

◆ operator*() [1/2]

softfloat cv::softfloat::operator* ( const softfloat & ) const

◆ operator*() [2/2]

softdouble cv::softdouble::operator* ( const softdouble & ) const

◆ operator*=() [1/2]

softfloat& cv::softfloat::operator*= ( const softfloat & a )

inline

◆ operator*=() [2/2]

softdouble& cv::softdouble::operator*= ( const softdouble & a )

inline

◆ operator+() [1/2]

softfloat cv::softfloat::operator+ ( const softfloat & ) const

Basic arithmetics.

◆ operator+() [2/2]

softdouble cv::softdouble::operator+ ( const softdouble & ) const

Basic arithmetics.

◆ operator+=() [1/2]

softfloat& cv::softfloat::operator+= ( const softfloat & a )

inline

◆ operator+=() [2/2]

softdouble& cv::softdouble::operator+= ( const softdouble & a )

inline

◆ operator-() [1/4]

softfloat cv::softfloat::operator- ( const softfloat & ) const

◆ operator-() [2/4]

softfloat cv::softfloat::operator- ( ) const

inline

◆ operator-() [3/4]

softdouble cv::softdouble::operator- ( const softdouble & ) const

◆ operator-() [4/4]

softdouble cv::softdouble::operator- ( ) const

inline

◆ operator-=() [1/2]

softfloat& cv::softfloat::operator-= ( const softfloat & a )

inline

◆ operator-=() [2/2]

softdouble& cv::softdouble::operator-= ( const softdouble & a )

inline

◆ operator/() [1/2]

softfloat cv::softfloat::operator/ ( const softfloat & ) const

◆ operator/() [2/2]

softdouble cv::softdouble::operator/ ( const softdouble & ) const

◆ operator/=() [1/2]

softfloat& cv::softfloat::operator/= ( const softfloat & a )

inline

◆ operator/=() [2/2]

softdouble& cv::softdouble::operator/= ( const softdouble & a )

inline

◆ operator<() [1/2]

bool cv::softfloat::operator< ( const softfloat & ) const

◆ operator<() [2/2]

bool cv::softdouble::operator< ( const softdouble & ) const

◆ operator<=() [1/2]

bool cv::softfloat::operator<= ( const softfloat & ) const

◆ operator<=() [2/2]

bool cv::softdouble::operator<= ( const softdouble & ) const

◆ operator=() [1/2]

softfloat& cv::softfloat::operator= ( const softfloat & c )

inline

Assign constructor.

◆ operator=() [2/2]

softdouble& cv::softdouble::operator= ( const softdouble & c )

inline

Assign constructor.

◆ operator==() [1/2]

bool cv::softfloat::operator== ( const softfloat & ) const

Comparison operations.

Any operation with NaN produces false
- The only exception is when x is NaN: x != y for any y.
Positive and negative zeros are equal

◆ operator==() [2/2]

bool cv::softdouble::operator== ( const softdouble & ) const

Comparison operations.

Any operation with NaN produces false
- The only exception is when x is NaN: x != y for any y.
Positive and negative zeros are equal

◆ operator>() [1/2]

bool cv::softfloat::operator> ( const softfloat & ) const

◆ operator>() [2/2]

bool cv::softdouble::operator> ( const softdouble & ) const

◆ operator>=() [1/2]

bool cv::softfloat::operator>= ( const softfloat & ) const

◆ operator>=() [2/2]

bool cv::softdouble::operator>= ( const softdouble & ) const

◆ pi() [1/2]

static softfloat cv::softfloat::pi ( )

inlinestatic

Correct pi approximation.

◆ pi() [2/2]

static softdouble cv::softdouble::pi ( )

inlinestatic

Correct pi approximation.

◆ pow() [1/2]

softfloat cv::pow	(	const softfloat &	a,
		const softfloat &	b
	)

Raising to the power.

Special cases:

x**NaN is NaN for any x
( |x| == 1 )**Inf is NaN
( |x| > 1 )**+Inf or ( |x| < 1 )**-Inf is +Inf
( |x| > 1 )**-Inf or ( |x| < 1 )**+Inf is 0
x ** 0 == 1 for any x
x ** 1 == 1 for any x
NaN ** y is NaN for any other y
Inf**(y < 0) == 0
Inf ** y is +Inf for any other y
(x < 0)**y is NaN for any other y if x can't be correctly rounded to integer
0 ** 0 == 1
0 ** (y < 0) is +Inf
0 ** (y > 0) is 0

Examples:: distrans.cpp.

◆ pow() [2/2]

softdouble cv::pow	(	const softdouble &	a,
		const softdouble &	b
	)

◆ saturate_cast() [1/2]

template<typename _Tp >

static _Tp cv::saturate_cast ( softfloat a )

inlinestatic

Saturate casts.

◆ saturate_cast() [2/2]

template<typename _Tp >

static _Tp cv::saturate_cast ( softdouble a )

inlinestatic

◆ saturate_cast< schar >() [1/2]

template<>

schar cv::saturate_cast< schar > ( softfloat a )

inline

◆ saturate_cast< schar >() [2/2]

template<>

schar cv::saturate_cast< schar > ( softdouble a )

inline

◆ saturate_cast< short >() [1/2]

template<>

short cv::saturate_cast< short > ( softfloat a )

inline

◆ saturate_cast< short >() [2/2]

template<>

short cv::saturate_cast< short > ( softdouble a )

inline

◆ saturate_cast< uchar >() [1/2]

template<>

uchar cv::saturate_cast< uchar > ( softfloat a )

inline

◆ saturate_cast< uchar >() [2/2]

template<>

uchar cv::saturate_cast< uchar > ( softdouble a )

inline

◆ saturate_cast< unsigned >() [1/2]

template<>

unsigned cv::saturate_cast< unsigned > ( softfloat a )

inline

Saturate cast to unsigned integer We intentionally do not clip negative numbers, to make -1 become 0xffffffff etc.

◆ saturate_cast< unsigned >() [2/2]

template<>

unsigned cv::saturate_cast< unsigned > ( softdouble a )

inline

◆ saturate_cast< ushort >() [1/2]

template<>

ushort cv::saturate_cast< ushort > ( softfloat a )

inline

◆ saturate_cast< ushort >() [2/2]

template<>

ushort cv::saturate_cast< ushort > ( softdouble a )

inline

◆ setExp() [1/2]

softfloat cv::softfloat::setExp ( int e ) const

inline

Construct a copy with new 0-based exponent.

◆ setExp() [2/2]

softdouble cv::softdouble::setExp ( int e ) const

inline

Construct a copy with new 0-based exponent.

◆ setFrac() [1/2]

softfloat cv::softfloat::setFrac ( const softfloat & s ) const

inline

Construct a copy with provided significand.

Constructs a copy of a number with significand taken from parameter

◆ setFrac() [2/2]

softdouble cv::softdouble::setFrac ( const softdouble & s ) const

inline

Construct a copy with provided significand.

Constructs a copy of a number with significand taken from parameter

◆ setSign() [1/2]

softfloat cv::softfloat::setSign ( bool sign ) const

inline

Construct a copy with new sign bit.

◆ setSign() [2/2]

softdouble cv::softdouble::setSign ( bool sign ) const

inline

Construct a copy with new sign bit.

◆ sin()

softdouble cv::sin ( const softdouble & a )

Sine.

Special cases:

sin(Inf) or sin(NaN) is NaN
sin(x) == x when sin(x) is close to zero

Examples:: contours2.cpp, image_alignment.cpp, and kalman.cpp.

◆ sqrt() [1/2]

softfloat cv::sqrt ( const softfloat & a )

Square root.

Examples:: kalman.cpp.

◆ sqrt() [2/2]

softdouble cv::sqrt ( const softdouble & a )

◆ zero() [1/2]

static softfloat cv::softfloat::zero ( )

inlinestatic

Zero constant.

◆ zero() [2/2]

static softdouble cv::softdouble::zero ( )

inlinestatic

Zero constant.

Variable Documentation

◆ v [1/2]

uint32_t cv::softfloat::v

◆ v [2/2]

uint64_t cv::softdouble::v

Classes

Functions

Variables

Detailed Description

Types

Operations

Function Documentation

◆ softdouble() [1/7]

◆ softdouble() [2/7]

◆ softdouble() [3/7]

◆ softdouble() [4/7]

◆ softdouble() [5/7]

◆ softdouble() [6/7]

◆ softdouble() [7/7]

◆ softfloat() [1/7]

◆ softfloat() [2/7]

◆ softfloat() [3/7]

◆ softfloat() [4/7]

◆ softfloat() [5/7]

◆ softfloat() [6/7]

◆ softfloat() [7/7]

◆ abs() [1/2]

◆ abs() [2/2]

◆ cbrt()

◆ cos()

◆ eps() [1/2]

◆ eps() [2/2]

◆ exp() [1/2]

◆ exp() [2/2]

◆ fromRaw() [1/2]

◆ fromRaw() [2/2]

◆ getExp() [1/2]

◆ getExp() [2/2]

◆ getFrac() [1/2]

◆ getFrac() [2/2]

◆ getSign() [1/2]

◆ getSign() [2/2]

◆ inf() [1/2]

◆ inf() [2/2]

◆ isInf() [1/2]

◆ isInf() [2/2]

◆ isNaN() [1/2]

◆ isNaN() [2/2]

◆ isSubnormal() [1/2]

◆ isSubnormal() [2/2]

◆ log() [1/2]

◆ log() [2/2]

◆ max() [1/4]

◆ max() [2/4]

◆ max() [3/4]

◆ max() [4/4]

◆ min() [1/4]

◆ min() [2/4]

◆ min() [3/4]

◆ min() [4/4]

◆ mulAdd() [1/2]

◆ mulAdd() [2/2]

◆ nan() [1/2]

◆ nan() [2/2]

◆ one() [1/2]

◆ one() [2/2]

◆ operator double()

◆ operator float()

◆ operator softdouble()

◆ operator softfloat()

◆ operator!=() [1/2]

◆ operator!=() [2/2]

◆ operator%() [1/2]

◆ operator%() [2/2]

◆ operator%=() [1/2]

◆ operator%=() [2/2]

◆ operator*() [1/2]

◆ operator*() [2/2]

◆ operator*=() [1/2]

◆ operator*=() [2/2]

◆ operator+() [1/2]

◆ operator+() [2/2]

◆ operator+=() [1/2]

◆ operator+=() [2/2]

◆ operator-() [1/4]