Arithmetic

Description

Arithmetic functions on Vec's, such as addition, multiplication, etc.

See also

Masked Arithmetic

Functions
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::absDiff (const Vec< T, SIMD_WIDTH > &v1, const Vec< T, SIMD_WIDTH > &v2)
	Computes the absolute difference of the elements of two Vec's.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::add (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Adds the elements of two Vec's.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::adds (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Adds the elements of two Vec's using saturated arithmetic.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::avg (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Computes the average of the elements of two Vec's, rounded up.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::avgrd (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Computes the average of the elements of two Vecs, rounding down.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::avgru (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Computes the average of the elements of two Vec's, rounded up.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::div (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Divides the elements of two Vec's.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::div2r0 (const Vec< T, SIMD_WIDTH > &a)
	Divides all elements of a Vec by 2 and rounds the result to 0.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::div2rd (const Vec< T, SIMD_WIDTH > &a)
	Divides all elements of a Vec by 2 and rounds down the result.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::mul (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Multiplies the elements of two Vec's.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::sign (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Negates the elements of a Vec of floating-point numbers where the corresponding element of a second Vec of floating-point numbers is negative.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::sub (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Subtracts the elements of two Vec's.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::subs (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Subtracts the elements of two Vec's using saturated arithmetic.

Function Documentation

absDiff()

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::absDiff ( const Vec< T, SIMD_WIDTH > & v1, const Vec< T, SIMD_WIDTH > & v2 )

inlinestatic

Computes the absolute difference of the elements of two Vec's.

Parameters

v1	first Vec
v2	second Vec

Returns

Vec containing the absolute difference of the elements of the two input Vec's

add()

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::add ( const Vec< T, SIMD_WIDTH > & a, const Vec< T, SIMD_WIDTH > & b )

inlinestatic

Adds the elements of two Vec's.

Parameters

a	first Vec
b	second Vec

Returns

Vec containing the sums of the elements of the two input Vec's

adds()

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::adds ( const Vec< T, SIMD_WIDTH > & a, const Vec< T, SIMD_WIDTH > & b )

inlinestatic

Adds the elements of two Vec's using saturated arithmetic.

Note

Does not use saturated arithmetic with floating point types.

Parameters

a	first Vec
b	second Vec

Returns

Vec containing the saturated sums of the elements of the two input Vec's

avg()

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::avg ( const Vec< T, SIMD_WIDTH > & a, const Vec< T, SIMD_WIDTH > & b )

inlinestatic

Computes the average of the elements of two Vec's, rounded up.

Parameters

a	first Vec
b	second Vec

Returns

Vec containing the rounded up average of the elements of the two input Vec's

avgrd()

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::avgrd ( const Vec< T, SIMD_WIDTH > & a, const Vec< T, SIMD_WIDTH > & b )

inlinestatic

Computes the average of the elements of two Vecs, rounding down.

Parameters

a	first Vec
b	second Vec

Returns

Vec containing the rounded down average of the elements of the two input Vec's

avgru()

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::avgru ( const Vec< T, SIMD_WIDTH > & a, const Vec< T, SIMD_WIDTH > & b )

inlinestatic

Computes the average of the elements of two Vec's, rounded up.

Equivalent to avg(const Vec<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &).

Parameters

a	first Vec
b	second Vec

Returns

Vec containing the rounded up average of the elements of the two input Vec's

div()

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::div ( const Vec< T, SIMD_WIDTH > & a, const Vec< T, SIMD_WIDTH > & b )

inlinestatic

Divides the elements of two Vec's.

Note

This function is only available for floating point types.

Parameters

a	first Vec
b	second Vec

Returns

Vec containing the quotients of the elements of the two input Vec's

div2r0()

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::div2r0 ( const Vec< T, SIMD_WIDTH > & a )

inlinestatic

Divides all elements of a Vec by 2 and rounds the result to 0.

Only rounds the result to 0 for integer types. For floating point types the result is not rounded.

Parameters

a

input Vec

Returns

result of the division

See also

div2rd()

div2rd()

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::div2rd ( const Vec< T, SIMD_WIDTH > & a )

inlinestatic

Divides all elements of a Vec by 2 and rounds down the result.

Only rounds down the result for integer types. For floating point types the result is not rounded.

Parameters

a

input Vec

Returns

result of the division

See also

div2r0()

mul()

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::mul ( const Vec< T, SIMD_WIDTH > & a, const Vec< T, SIMD_WIDTH > & b )

inlinestatic

Multiplies the elements of two Vec's.

Note

This function is only available for floating point types.

Parameters

a	first Vec
b	second Vec

Returns

Vec containing the products of the elements of the two input Vec's

sign()

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::sign ( const Vec< T, SIMD_WIDTH > & a, const Vec< T, SIMD_WIDTH > & b )

inlinestatic

Negates the elements of a Vec of floating-point numbers where the corresponding element of a second Vec of floating-point numbers is negative.

Note

Contrary to IEEE 754, this function considers -0.0 to be negative.

Parameters

a	Vec of floating-point numbers to be negated
b	Vec of floating-point numbers that determines which elements of a are negated

Returns

resulting Vec of floating-point numbers

sub()

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::sub ( const Vec< T, SIMD_WIDTH > & a, const Vec< T, SIMD_WIDTH > & b )

inlinestatic

Subtracts the elements of two Vec's.

Parameters

a	first Vec
b	second Vec

Returns

Vec containing the differences of the elements of the two input Vec's

subs()

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::subs ( const Vec< T, SIMD_WIDTH > & a, const Vec< T, SIMD_WIDTH > & b )

inlinestatic

Subtracts the elements of two Vec's using saturated arithmetic.

Note

Does not use saturated arithmetic with floating point types.

Parameters

a	first Vec
b	second Vec

Returns

Vec containing the saturated differences of the elements of the two input Vec's