Data representation and operations on a vector of 4 boolean values. This is used in predicated vector operations. Specifically the ith value of svec<4,bool> indicates whether the ith lane of a predicated vector operation is enabled or not. More...

#include <power_vsx4.h>

Classes
struct	Helper
	A special helper class to support customized subscript[] operations. More...

Public Member Functions
	svec ()
	Default constructor. More...

	svec (__vector unsigned int vv)
	For internal use only. More...

	svec (uint32_t a, uint32_t b, uint32_t c, uint32_t d)
	Constructor. More...

	svec (uint32_t a)
	Constructor. More...

Helper	operator[] (int index)

const uint32_t	operator[] (int index) const

svec< 4,bool >	operator== (svec< 4, bool > a)
	Element-wise compare equal. E.g., "a == b". More...

svec< 4,bool >	operator!= (svec< 4, bool > a)
	Element-wise compare not equal, return a bool vector. E.g. "a != b". More...

void	store (svec< 4, bool > *p)
	Store the vector to address p. More...

bool	any_true ()
	Check if any element in the mask vector is true. More...

bool	all_true ()
	Check if all the elements in the mask vector is true. More...

bool	none_true ()
	Check all the elements in the mask vector is false. More...

svec< 4,bool >	operator\| (svec< 4, bool >)
	Element-wise bit-wise OR operator. E.g., "a \| b". More...

svec< 4,bool >	operator& (svec< 4, bool > a)
	Element-wise bit-wise AND operator. E.g., "a & b". More...

svec< 4,bool >	operator^ (svec< 4, bool > a)
	Element-wise bit-wise XOR operator. E.g., "a ^ b". More...

svec< 4,bool >	operator~ ()
	Element-wise bit-wise compliment operator. E.g., "~a". More...

svec< 4,bool >	operator! ()
	Element-wise bit-wise not operator. E.g., "!a". More...

svec< 4,bool >	operator&& (svec< 4, bool > a)
	Element-wise boolean AND operator. E.g., "a && b". More...

svec< 4,bool >	operator\|\| (svec< 4, bool > a)
	Element-wise boolean OR operator. E.g., "a \|\| b". More...

Static Public Member Functions
static svec< 4,bool >	load (svec< 4, bool > *p)
	load the vector from the pointer p More...

Public Attributes
__vector unsigned int	v
	use __vector unsigned int v for storage More...

Friends
std::ostream &	operator<< (std::ostream &out, const svec< 4, bool > &v)

Detailed Description

template<>
struct vsx::svec< 4, bool >

Data representation and operations on a vector of 4 boolean values. This is used in predicated vector operations. Specifically the ith value of svec<4,bool> indicates whether the ith lane of a predicated vector operation is enabled or not.

See also gather, scatter, load, store, and compare operations.

Constructor & Destructor Documentation

vsx::svec< 4, bool >::svec ( )

Default constructor.

Returns: a vector of 4 undefined values.

vsx::svec< 4, bool >::svec ( __vector unsigned int vv )

For internal use only.

Parameters

[in] vv a __vector unsigned int.

Note: each value in vv must be either 0 or -1.

Returns: a mask vector whose value is from the vv.

vsx::svec< 4, bool >::svec	(	uint32_t	a,
		uint32_t	b,
		uint32_t	c,
		uint32_t	d
	)

Constructor.

Parameters

[in] a,b,c,d boolean values

Note: a,b,c,d must be either 0 or -1

Returns: a vector of 4 mask/booleans: {a,b,c,d}.

vsx::svec< 4, bool >::svec ( uint32_t a )

Constructor.

Parameters

[in] a a boolean value

Note: a must be either 0 or -1

Returns: a vector of 4 mask/booleans: {a,a,a,a}.

Member Function Documentation

bool vsx::svec< 4, bool >::all_true ( )

Check if all the elements in the mask vector is true.

Note: This is a reduction operation that returns a scalar value.

Returns: true if all the elements in the mask vector are true, otherwise false.

bool vsx::svec< 4, bool >::any_true ( )

Check if any element in the mask vector is true.

Note: This is a reduction operation that returns a scalar value.

Returns: true if at least one element in the mask vector is true, otherwise false

svec< 4, bool > vsx::svec< 4, bool >::load ( svec< 4, bool > * p )

static

load the vector from the pointer p

Parameters

[in] p load address

Note: p does not have to be aligned

Returns: no return value. This vector is updated with value loaded from p.

bool vsx::svec< 4, bool >::none_true ( )

Check all the elements in the mask vector is false.

Note: This is a reduction operation that returns a scalar value.

Returns: true if all the elements in the mask vector are false, otherwise false.

svec< 4, bool > vsx::svec< 4, bool >::operator! ( )

Element-wise bit-wise not operator. E.g., "!a".

Returns: the result of bit-wise compliment as a boolean vector.

svec< 4, bool > vsx::svec< 4, bool >::operator!= ( svec< 4, bool > a )

Element-wise compare not equal, return a bool vector. E.g. "a != b".

Parameters

[in] a a boolean vector

Returns: the result of compare-not-equal as a boolean vector

svec< 4, bool > vsx::svec< 4, bool >::operator& ( svec< 4, bool > a )

Element-wise bit-wise AND operator. E.g., "a & b".

Parameters

[in] a a boolean vector

Returns: the result of bit-wise AND as a boolean vector.

svec< 4, bool > vsx::svec< 4, bool >::operator&& ( svec< 4, bool > a )

Element-wise boolean AND operator. E.g., "a && b".

Parameters

[in] a a boolean vector

Returns: the result of boolean AND as a boolean vector.

svec< 4, bool > vsx::svec< 4, bool >::operator== ( svec< 4, bool > a )

Element-wise compare equal. E.g., "a == b".

Parameters

[in] a a boolean vector

Returns: the result of compare-equal as a boolean vector

Helper vsx::svec< 4, bool >::operator[] ( int index )

const uint32_t vsx::svec< 4, bool >::operator[] ( int index ) const

svec< 4, bool > vsx::svec< 4, bool >::operator^ ( svec< 4, bool > a )

Element-wise bit-wise XOR operator. E.g., "a ^ b".

Parameters

[in] a a boolean vector

Returns: the result of bit-wise XOR as a boolean vector.

svec< 4, bool > vsx::svec< 4, bool >::operator| ( svec< 4, bool > a )

Element-wise bit-wise OR operator. E.g., "a | b".

Parameters

[in] a a boolean vector

Returns: the result of bit-wise OR as a boolean vector.

svec< 4, bool > vsx::svec< 4, bool >::operator|| ( svec< 4, bool > a )

Element-wise boolean OR operator. E.g., "a || b".

Parameters

[in] a a boolean vector

Returns: the result of boolean OR as a boolean vector.

svec< 4, bool > vsx::svec< 4, bool >::operator~ ( )

Element-wise bit-wise compliment operator. E.g., "~a".

Returns: the result of bit-wise compliment as a boolean vector.

void vsx::svec< 4, bool >::store ( svec< 4, bool > * p )

Store the vector to address p.

Parameters

[in] p store address

Note: p does not have to be aligned

Friends And Related Function Documentation

std::ostream& operator<<	(	std::ostream &	out,
		const svec< 4, bool > &	v
	)

friend

Member Data Documentation

__vector unsigned int vsx::svec< 4, bool >::v

use __vector unsigned int v for storage

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

/cygdrive/c/workspace/ibm-summer/generic_simd/include/power_vsx4.h

Classes

Public Member Functions

Static Public Member Functions

Public Attributes

Friends

Detailed Description

template<> struct vsx::svec< 4, bool >

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation

template<>
struct vsx::svec< 4, bool >