gr_fir_fff_simd Class Reference

common base class for SIMD versions of gr_fir_fffThis base class handles alignment issues common to SSE and 3DNOW subclasses. More...

#include <gr_fir_fff_simd.h>

Inheritance diagram for gr_fir_fff_simd:

List of all members.

Public Member Functions
	gr_fir_fff_simd ()
	gr_fir_fff_simd (const std::vector< float > &taps)
	~gr_fir_fff_simd ()
virtual void	set_taps (const std::vector< float > &taps)
	install new_taps as the current taps.
virtual float	filter (const float input[])
	compute a single output value.
Protected Types
typedef float(*	float_dotprod_t )(const float *input, const float *taps, unsigned n_4_float_blocks)
Protected Attributes
float *	d_aligned_taps [4]
float_dotprod_t	d_float_dotprod

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Detailed Description

common base class for SIMD versions of gr_fir_fff

This base class handles alignment issues common to SSE and 3DNOW subclasses.

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Member Typedef Documentation

typedef float(* gr_fir_fff_simd::float_dotprod_t)(const float *input, const float *taps, unsigned n_4_float_blocks) [protected]

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Constructor & Destructor Documentation

gr_fir_fff_simd::gr_fir_fff_simd

(

)

gr_fir_fff_simd::gr_fir_fff_simd

(

const std::vector< float > &

taps

)

gr_fir_fff_simd::~gr_fir_fff_simd

(

)

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Member Function Documentation

virtual float gr_fir_fff_simd::filter

(

const float

input[]

)

[virtual]

compute a single output value.

input must have ntaps() valid entries. input[0] .. input[ntaps() - 1] are referenced to compute the output value.

Returns:

the filtered input value.

Reimplemented from gr_fir_fff_generic.

virtual void gr_fir_fff_simd::set_taps

(

const std::vector< float > &

taps

)

[virtual]

install new_taps as the current taps.

Reimplemented from gr_fir_fff.

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Member Data Documentation

float* gr_fir_fff_simd::d_aligned_taps[4] [protected]

aligned_taps holds 4 copies of the coefficients preshifted by 0, 1, 2, or 3 floats to meet all possible input data alignments. This allows us to always fetch data and taps that are 128-bit aligned.

float_dotprod_t gr_fir_fff_simd::d_float_dotprod [protected]

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

• gr_fir_fff_simd.h