Comparisons

Description

Functions for comparing elements of Vec's.

See also

Masked Comparisons

Functions
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::cmpeq (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Compares corresponding elements of two Vec's for equality ( == ).
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::cmpge (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Compares corresponding elements of two Vec's for greater-than-or-equal ( >= ).
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::cmpgt (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Compares corresponding elements of two Vec's for greater-than ( > ).
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::cmple (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Compares corresponding elements of two Vec's for less-than-or-equal ( <= ).
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::cmplt (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Compares corresponding elements of two Vec's for less-than ( < ).
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::cmpneq (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Compares corresponding elements of two Vec's for inequality ( != ).
template<typename Tcond , typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::ifelse (const Vec< Tcond, SIMD_WIDTH > &cond, const Vec< T, SIMD_WIDTH > &trueVal, const Vec< T, SIMD_WIDTH > &falseVal)
	Selects elements from two Vec's based on a condition Vec.
template<typename T , size_t SIMD_WIDTH>
static bool	simd::test_all_ones (const Vec< T, SIMD_WIDTH > &a)
	Tests if all bits of a Vec are one.
template<typename T , size_t SIMD_WIDTH>
static bool	simd::test_all_zeros (const Vec< T, SIMD_WIDTH > &a)
	Tests if all bits of a Vec are zero.

Function Documentation

cmpeq()

template<typename T , size_t SIMD_WIDTH>

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

inlinestatic

Compares corresponding elements of two Vec's for equality ( == ).

Parameters

a	first Vec to compare
b	second Vec to compare

Returns

Vec containing the results of the comparison, where each element is all 1 bits or all 0 bits, depending on whether the corresponding comparison returned true or false, respectively

See also

mask_cmpeq(const Vec<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &)

mask_cmpeq(const Mask<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &)

cmpge()

template<typename T , size_t SIMD_WIDTH>

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

inlinestatic

Compares corresponding elements of two Vec's for greater-than-or-equal ( >= ).

Parameters

a	first Vec to compare
b	second Vec to compare

Returns

Vec containing the results of the comparison, where each element is all 1 bits or all 0 bits, depending on whether the corresponding comparison returned true or false, respectively

See also

mask_cmpge(const Vec<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &)

mask_cmpge(const Mask<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &)

cmpgt()

template<typename T , size_t SIMD_WIDTH>

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

inlinestatic

Compares corresponding elements of two Vec's for greater-than ( > ).

Parameters

a	first Vec to compare
b	second Vec to compare

Returns

Vec containing the results of the comparison, where each element is all 1 bits or all 0 bits, depending on whether the corresponding comparison returned true or false, respectively

See also

mask_cmpgt(const Vec<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &)

mask_cmpgt(const Mask<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &)

cmple()

template<typename T , size_t SIMD_WIDTH>

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

inlinestatic

Compares corresponding elements of two Vec's for less-than-or-equal ( <= ).

Parameters

a	first Vec to compare
b	second Vec to compare

Returns

Vec containing the results of the comparison, where each element is all 1 bits or all 0 bits, depending on whether the corresponding comparison returned true or false, respectively

See also

mask_cmple(const Vec<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &)

mask_cmple(const Mask<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &)

cmplt()

template<typename T , size_t SIMD_WIDTH>

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

inlinestatic

Compares corresponding elements of two Vec's for less-than ( < ).

Parameters

a	first Vec to compare
b	second Vec to compare

Returns

Vec containing the results of the comparison, where each element is all 1 bits or all 0 bits, depending on whether the corresponding comparison returned true or false, respectively

See also

mask_cmplt(const Vec<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &)

mask_cmplt(const Mask<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &)

cmpneq()

template<typename T , size_t SIMD_WIDTH>

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

inlinestatic

Compares corresponding elements of two Vec's for inequality ( != ).

Parameters

a	first Vec to compare
b	second Vec to compare

Returns

Vec containing the results of the comparison, where each element is all 1 bits or all 0 bits, depending on whether the corresponding comparison returned true or false, respectively

See also

mask_cmpne(const Vec<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &)

mask_cmpne(const Mask<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &, const Vec<T, SIMD_WIDTH> &)

ifelse()

template<typename Tcond , typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::ifelse ( const Vec< Tcond, SIMD_WIDTH > & cond, const Vec< T, SIMD_WIDTH > & trueVal, const Vec< T, SIMD_WIDTH > & falseVal )

inlinestatic

Selects elements from two Vec's based on a condition Vec.

The element type of the condition Vec must have the same size as the element type of the true and false value Vec's.

Parameters

cond	condition Vec, each element must be either all 1 bits or all 0 bits, representing true or false, respectively
trueVal	Vec to select from if the condition is true
falseVal	Vec to select from if the condition is false

Returns

Vec containing the selected elements

test_all_ones()

template<typename T , size_t SIMD_WIDTH>

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

inlinestatic

Tests if all bits of a Vec are one.

Parameters

a	Vec to test

Returns

true if all bits are one, false otherwise

test_all_zeros()

template<typename T , size_t SIMD_WIDTH>

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

inlinestatic

Tests if all bits of a Vec are zero.

Parameters

a	Vec to test

Returns

true if all bits are zero, false otherwise