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gr_fir_FSF_simd Class Reference

common base class for SIMD versions of gr_fir_FSF More...

#include <gr_fir_FSF_simd.h>

Inheritance diagram for gr_fir_FSF_simd:

gr_fir_FSF_generic gr_fir_FSF gr_fir_FSF_3dnow gr_fir_FSF_sse List of all members.

Public Member Functions

 gr_fir_FSF_simd ()
 gr_fir_FSF_simd (const std::vector< float > &taps)
 ~gr_fir_FSF_simd ()
virtual void set_taps (const std::vector< float > &taps)
 install new_taps as the current taps.
virtual short 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

Detailed Description

common base class for SIMD versions of gr_fir_FSF

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


Member Typedef Documentation

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


Constructor & Destructor Documentation

gr_fir_FSF_simd::gr_fir_FSF_simd  ) 
 

gr_fir_FSF_simd::gr_fir_FSF_simd const std::vector< float > &  taps  ) 
 

gr_fir_FSF_simd::~gr_fir_FSF_simd  ) 
 


Member Function Documentation

short gr_fir_FSF_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_FSF_generic.

void gr_fir_FSF_simd::set_taps const std::vector< float > &  new_taps  )  [virtual]
 

install new_taps as the current taps.

Reimplemented from gr_fir_FSF.


Member Data Documentation

float* gr_fir_FSF_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_FSF_simd::d_float_dotprod [protected]
 


The documentation for this class was generated from the following files:
Generated on Tue Mar 15 23:46:37 2005 for GNU Radio by  doxygen 1.4.0