FFTLIB_ifft1d_i32fc_c32fc_o32fc

Introduction

Kernel for computing 32-bit floating-point inverse FFT.

• The size of data is required to be a power of 2.
• The kernel requires application to provide a pre-generated twiddle factors along with the input data.

Functions
FFTLIB_STATUS	FFTLIB_ifft1d_i32fc_c32fc_o32fc_init (FFTLIB_F32 *pX, FFTLIB_bufParams1D_t *bufParamsX, FFTLIB_F32 *pW, FFTLIB_bufParams1D_t *bufParamsW, FFTLIB_F32 *pY, FFTLIB_bufParams1D_t *bufParamsY, void *pBlock)
	This function should be called before the FFTLIB_ifft1d_i32fc_c32fc_o32fc_kernel function is called. This function takes care of any one-time operations such as setting up the configuration for the streaming engine. More...
FFTLIB_STATUS	FFTLIB_ifft1d_i32fc_c32fc_o32fc_kernel (FFTLIB_F32 *pX, FFTLIB_bufParams1D_t *bufParamsX, FFTLIB_F32 *pW, FFTLIB_bufParams1D_t *bufParamsW, FFTLIB_F32 *pY, FFTLIB_bufParams1D_t *bufParamsY, void *pBlock)
	This function is the main kernel compute function. More...
FFTLIB_STATUS	FFTLIB_ifft1d_i32fc_c32fc_o32fc_checkParams (FFTLIB_F32 *pX, FFTLIB_bufParams1D_t *bufParamsX, FFTLIB_F32 *pW, FFTLIB_bufParams1D_t *bufParamsW, FFTLIB_F32 *pY, FFTLIB_bufParams1D_t *bufParamsY, void *pBlock)
	This function checks the validity of the parameters passed to FFTLIB_ifft1d_i32fc_c32fc_o32fc_init and FFTLIB_ifft1d_i32fc_c32fc_o32fc_kernel functions. More...

Macros
#define	FFTLIB_FFT1D_I32FC_C32FC_O32FC_PBLOCK_SIZE   (11 * SE_PARAM_SIZE)
	Macro to define the array size for storing SE/SA parameters. More...

Macro Definition Documentation

FFTLIB_FFT1D_I32FC_C32FC_O32FC_PBLOCK_SIZE

#define FFTLIB_FFT1D_I32FC_C32FC_O32FC_PBLOCK_SIZE   (11 * SE_PARAM_SIZE)

Macro to define the array size for storing SE/SA parameters.

Definition at line 103 of file FFTLIB_ifft1d_i32fc_c32fc_o32fc.h.

Function Documentation

FFTLIB_ifft1d_i32fc_c32fc_o32fc_init()

FFTLIB_STATUS FFTLIB_ifft1d_i32fc_c32fc_o32fc_init	(	FFTLIB_F32 *	pX,
		FFTLIB_bufParams1D_t *	bufParamsX,
		FFTLIB_F32 *	pW,
		FFTLIB_bufParams1D_t *	bufParamsW,
		FFTLIB_F32 *	pY,
		FFTLIB_bufParams1D_t *	bufParamsY,
		void *	pBlock
	)

This function should be called before the FFTLIB_ifft1d_i32fc_c32fc_o32fc_kernel function is called. This function takes care of any one-time operations such as setting up the configuration for the streaming engine.

Parameters

[in]	pX	: Pointer to buffer with input data
[in]	bufParamsX	: Pointer to the structure containing dimensional information of input buffer
[in]	pW	: Pointer to buffer with twiddle factors
[in]	bufParamsW	: Pointer to the structure containing dimensional information of twiddle factor buffer
[out]	pY	: Pointer to buffer with output data
[in]	bufParamsY	: Pointer to the structure containing dimensional information of output buffer
[out]	pBlock	: Pointer to the buffer that will hold the streaming engine parameters

Returns

Status value indicating success or failure. Refer to FFTLIB_STATUS.

Definition at line 84 of file c71/FFTLIB_ifft1d_i32fc_c32fc_o32fc_ci.cpp.

FFTLIB_ifft1d_i32fc_c32fc_o32fc_kernel()

FFTLIB_STATUS FFTLIB_ifft1d_i32fc_c32fc_o32fc_kernel	(	FFTLIB_F32 *	pX,
		FFTLIB_bufParams1D_t *	bufParamsX,
		FFTLIB_F32 *	pW,
		FFTLIB_bufParams1D_t *	bufParamsW,
		FFTLIB_F32 *	pY,
		FFTLIB_bufParams1D_t *	bufParamsY,
		void *	pBlock
	)

This function is the main kernel compute function.

Parameters

[in]	pX	: Pointer to buffer with input data
[in]	bufParamsX	: Pointer to the structure containing dimensional information of input buffer
[in]	pW	: Pointer to buffer with twiddle factors
[in]	bufParamsW	: Pointer to the structure containing dimensional information of twiddle factor buffer
[out]	pY	: Pointer to buffer with output data
[in]	bufParamsY	: Pointer to the structure containing dimensional information of output buffer
[in]	pBlock	: Pointer to the buffer that will hold the streaming engine parameters

Returns

Status value indicating success or failure. Refer to FFTLIB_STATUS.

Definition at line 292 of file c71/FFTLIB_ifft1d_i32fc_c32fc_o32fc_ci.cpp.

FFTLIB_ifft1d_i32fc_c32fc_o32fc_checkParams()

FFTLIB_STATUS FFTLIB_ifft1d_i32fc_c32fc_o32fc_checkParams	(	FFTLIB_F32 *	pX,
		FFTLIB_bufParams1D_t *	bufParamsX,
		FFTLIB_F32 *	pW,
		FFTLIB_bufParams1D_t *	bufParamsW,
		FFTLIB_F32 *	pY,
		FFTLIB_bufParams1D_t *	bufParamsY,
		void *	pBlock
	)

This function checks the validity of the parameters passed to FFTLIB_ifft1d_i32fc_c32fc_o32fc_init and FFTLIB_ifft1d_i32fc_c32fc_o32fc_kernel functions.

Parameters

[in]	pX	: Pointer to buffer with input data
[in]	bufParamsX	: Pointer to the structure containing dimensional information of input buffer
[in]	pW	: Pointer to buffer with twiddle factors
[in]	bufParamsW	: Pointer to the structure containing dimensional information of twiddle factor buffer
[out]	pY	: Pointer to buffer with output data
[in]	bufParamsY	: Pointer to the structure containing dimensional
[in]	pBlock	: Pointer to the buffer that will hold the streaming engine parameters

Returns

Status value indicating success or failure. Refer to FFTLIB_STATUS.

Definition at line 953 of file c71/FFTLIB_ifft1d_i32fc_c32fc_o32fc_ci.cpp.