Float

Namespaces
namespace	inner

Data Structures
struct	vector_traits< float, arch, typename std::enable_if< std::is_base_of< Helium, arch >::value >::type >
	Vector datatype for Helium. More...
struct	vctpq< float >
	vctpq for this datatype More...
struct	vload1_gen_stride< S >
	Load with generalized stride (gather load) More...
struct	vload1_gen_stride< 0, 1, 2, 3 >
	Load with generalized stride specialized for <0,1,2,3> More...
struct	vload1_gen_stride_z< S >
	Load with generalized stride (gather load) and tail predicate. More...
struct	vload1_gen_stride_z< 0, 1, 2, 3 >
	Load with generalized stride (gather load) and tail predicate specialized for <0,1,2,3> More...
struct	vstore1_gen_stride< S >
	Generalized store with strides. More...
struct	vstore1_gen_stride< 0, 1, 2, 3 >
	Generalized store with stride (Specialized for <0,1,2,3>) More...
struct	vstore1_gen_stride_z< S >
	Store with generalized strides and tail predicate. More...
struct	vstore1_gen_stride_z< 0, 1, 2, 3 >
	Scatter store with tail predicate (specialized for <0,1,2,3>) More...

Description

---

Data Structure Documentation

vector_traits< float, arch, typename std::enable_if< std::is_base_of< Helium, arch >::value >::type >

struct vector_traits< float, arch, typename std::enable_if< std::is_base_of< Helium, arch >::value >::type >

template<typename arch>
struct vector_traits< float, arch, typename std::enable_if< std::is_base_of< Helium, arch >::value >::type >

Vector datatype for Helium.

Template Parameters

arch	Current architecture

Public Types
typedef float	type
	Scalar datatype.
typedef float	storage_type
	Storage datatype.
typedef float32x4_t	vector
	Vector datatype.
typedef float32x4_t	temp_accumulator
	Temp accumulator datatype (must be reduced to final scalar datatype)
typedef mve_pred16_t	predicate_t
	Predicate datatype.
Static Public Member Functions
static float32x4_t	temp_acc_zero ()
	Temp accumulator initialized to 0.
static constexpr float	zero_lane ()
	Zero lane.
static constexpr float	lane_value (const float x)
	Lane value.
Static Public Attributes
static constexpr bool	has_vector = true
	Has vector instruction.
static constexpr bool	is_float = true
	Is float.
static constexpr bool	is_fixed = false
	Is not fixed point.
static constexpr bool	has_predicate = true
	Has predicated loops.
static constexpr int	nb_lanes = 4
	Number of lanes.

Member Function Documentation

lane_value()

static constexpr float lane_value ( const float  x )

inlinestaticconstexpr

Lane value.

Parameters

[in]

x

Lane vlue

Returns

Value with scalar datatype

temp_acc_zero()

static float32x4_t temp_acc_zero ( )

inlinestatic

Temp accumulator initialized to 0.

Returns

Temp accumulator initialized to 0

zero_lane()

static constexpr float zero_lane ( )

inlinestaticconstexpr

Zero lane.

Returns

Value to wrte 0 into a lane

inner::vctpq< float >

struct inner::vctpq< float >

vctpq for this datatype

Static Public Member Functions
static mve_pred16_t	mk (uint32_t v)
	Make a predicate.

Member Function Documentation

mk()

static mve_pred16_t mk ( uint32_t  v )

inlinestatic

Make a predicate.

Parameters

[in]

v

Number of iterations

Returns

Predicate

inner::vload1_gen_stride

struct inner::vload1_gen_stride

template<int ... S>
struct inner::vload1_gen_stride< S >

Load with generalized stride (gather load)

Template Parameters

S	List of offsets known at built time

Static Public Member Functions
static float32x4_t	run (const float32_t *p)
	Load with generalized stride.

Member Function Documentation

run()

static float32x4_t run ( const float32_t *  p )

inlinestatic

Load with generalized stride.

Parameters

[in]

p

Load address

Returns

Gather load

inner::vload1_gen_stride< 0, 1, 2, 3 >

struct inner::vload1_gen_stride< 0, 1, 2, 3 >

Load with generalized stride specialized for <0,1,2,3>

Static Public Member Functions
static float32x4_t	run (const float32_t *p)
	Load with generalized stride.

Member Function Documentation

run()

static float32x4_t run ( const float32_t *  p )

inlinestatic

Load with generalized stride.

Parameters

[in]

p

Load address

Returns

Loaded vector

inner::vload1_gen_stride_z

struct inner::vload1_gen_stride_z

template<int ... S>
struct inner::vload1_gen_stride_z< S >

Load with generalized stride (gather load) and tail predicate.

Template Parameters

S	List of offsets known at built time

Static Public Member Functions
static float32x4_t	run (const float32_t *p, const std::size_t nb, const mve_pred16_t p0)
	Load.

Member Function Documentation

run()

static float32x4_t run ( const float32_t *  p, const std::size_t  nb, const mve_pred16_t  p0  )

inlinestatic

Load.

Parameters

[in]	p	Load address
[in]	nb	Number of remaining samples in loop
[in]	p0	Predicate for remaining samples

Returns

Gather load with predicate

inner::vload1_gen_stride_z< 0, 1, 2, 3 >

struct inner::vload1_gen_stride_z< 0, 1, 2, 3 >

Load with generalized stride (gather load) and tail predicate specialized for <0,1,2,3>

Template Parameters

S	List of offsets known at built time

Static Public Member Functions
static float32x4_t	run (const float32_t *p, const std::size_t nb, const mve_pred16_t p0)
	Gather load with predicated specialized for <0,1,2,3>

Member Function Documentation

run()

static float32x4_t run ( const float32_t *  p, const std::size_t  nb, const mve_pred16_t  p0  )

inlinestatic

Gather load with predicated specialized for <0,1,2,3>

Parameters

[in]	p	Load address
[in]	nb	Number of remaining samples in the loop
[in]	p0	Predicate for samples in the loop

Returns

Gather load

inner::vstore1_gen_stride

struct inner::vstore1_gen_stride

template<int ... S>
struct inner::vstore1_gen_stride< S >

Generalized store with strides.

Template Parameters

S	Stride values known at built time

Static Public Member Functions
static void	run (float32_t *p, const float32x4_t val)
	Scatter store.

Member Function Documentation

run()

static void run ( float32_t *  p, const float32x4_t  val  )

inlinestatic

Scatter store.

Parameters

	p	Store address
[in]	val	VAlue to store

inner::vstore1_gen_stride< 0, 1, 2, 3 >

struct inner::vstore1_gen_stride< 0, 1, 2, 3 >

Generalized store with stride (Specialized for <0,1,2,3>)

Static Public Member Functions
static void	run (float32_t *p, const float32x4_t val)
	Scatter store.

Member Function Documentation

run()

static void run ( float32_t *  p, const float32x4_t  val  )

inlinestatic

Scatter store.

Parameters

	p	Store address
[in]	val	Value to store

inner::vstore1_gen_stride_z

struct inner::vstore1_gen_stride_z

template<int ... S>
struct inner::vstore1_gen_stride_z< S >

Store with generalized strides and tail predicate.

Template Parameters

S	Strides values known at built time

Static Public Member Functions
static void	vstore1_z (float32_t *p, const float32x4_t val, const std::size_t nb, const mve_pred16_t p0)
	Scatter store with tail predicate.

Member Function Documentation

vstore1_z()

static void vstore1_z ( float32_t *  p, const float32x4_t  val, const std::size_t  nb, const mve_pred16_t  p0  )

inlinestatic

Scatter store with tail predicate.

Parameters

	p	Store address
[in]	val	Value to store
[in]	nb	Remaining number of loops
[in]	p0	Loop predicate

inner::vstore1_gen_stride_z< 0, 1, 2, 3 >

struct inner::vstore1_gen_stride_z< 0, 1, 2, 3 >

Scatter store with tail predicate (specialized for <0,1,2,3>)

Static Public Member Functions
static void	vstore1_z (float32_t *p, const float32x4_t val, const std::size_t nb, const mve_pred16_t p0)
	Scatter store with tail predicate.

Member Function Documentation

vstore1_z()

static void vstore1_z ( float32_t *  p, const float32x4_t  val, const std::size_t  nb, const mve_pred16_t  p0  )

inlinestatic

Scatter store with tail predicate.

Parameters

	p	Store address
[in]	val	Value to store
[in]	nb	Number of remaining loops
[in]	p0	Loop predicate