Function Descriptions
3.6 Complex Fast Fourier Transform Twiddle Factors
Description:
This module generates the twiddle factors used by the complex FFT.
Header File:
FPU.h
Declaration:
void CFFT_f32_sincostable (CFFT_F32_STRUCT
*
)
Usage:
A pointer to the following structure is passed to the CFFT_f32_sincostable function.It is the
same structure described in the CFFT_f32 section:
typedef struct {
float32
*
InPtr;
float32
*
OutPtr;
float32
*
CoefPtr;
float32
*
CurrentInPtr;
float32
*
CurrentOutPtr;
Uint16 Stages;
Uint16 FFTSize;
} CFFT_F32_STRUCT;
Table 3.2 describes each element.
Alignment Requirements:
None
Sep 10, 2012 23
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