Q15

Namespaces
namespace	inner

Data Structures
struct	vector_traits< Q15, arch, typename std::enable_if< std::is_base_of< Helium, arch >::value >::type >
	Vector features for Q15 on Helium. More...

Description

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Data Structure Documentation

vector_traits< Q15, arch, typename std::enable_if< std::is_base_of< Helium, arch >::value >::type >

struct vector_traits< Q15, arch, typename std::enable_if< std::is_base_of< Helium, arch >::value >::type >

template<typename arch>
struct vector_traits< Q15, arch, typename std::enable_if< std::is_base_of< Helium, arch >::value >::type >

Vector features for Q15 on Helium.

Template Parameters

arch	Current architecture

Public Types
typedef Q15	type
	Scalar datatype.
typedef type::value_type	storage_type
	Storage datatype (int16_t)
typedef int16x8_t	vector
	Vector datatype.
typedef Q< 33, 30 >	temp_accumulator
	Temp accumulator datatype.
typedef mve_pred16_t	predicate_t
	Predicate for loop.
Static Public Member Functions
static Q< 33, 30 >	temp_acc_zero ()
	Zero.
static constexpr int16_t	zero_lane ()
	Value to write in a lane to write 0.
static constexpr int16_t	lane_value (const Q15 x)
	Convert to lane value.
Static Public Attributes
static constexpr bool	has_vector = true
	Has vector instructions.
static constexpr bool	is_float = false
	Is not float.
static constexpr bool	is_fixed = true
	Is fixed point.
static constexpr bool	has_predicate = true
	Has predicated loop.
static constexpr int	nb_lanes = 8
	Number of lanes.

Member Function Documentation

lane_value()

static constexpr int16_t lane_value ( const Q15  x )

inlinestaticconstexpr

Convert to lane value.

Parameters

[in]

x

Lane value

Returns

Lane value

temp_acc_zero()

static Q< 33, 30 > temp_acc_zero ( )

inlinestatic

Zero.

Returns

Zero with accumulator datatype

zero_lane()

static constexpr int16_t zero_lane ( )

inlinestaticconstexpr

Value to write in a lane to write 0.

Returns

Zero value