DSPF_sp_fir_r2
[Filtering and convolution]

Collaboration diagram for DSPF_sp_fir_r2:

---

Detailed Description

void	DSPF_sp_fir_r2 (const float *x, const float *h, float *restrict r, const int nh, const int nr)

---

Function Documentation

void DSPF_sp_fir_r2	(	const float *	x,
		const float *	h,
		float *restrict	r,
		const int	nh,
		const int	nr
	)

Computes a real FIR filter (direct-form) using coefficients stored in vector h[]. The real data input is stored in vector x[]. The filter output result is stored in vector r[]. The filter calculates nr output samples using nh coefficients. The coefficients are expected to be in reverse order.

Parameters:

	x[nr+nh-1]	Pointer to input array of size nr+nh-1.
	h[nh]	Pointer to coefficient array of size nh (in reverse order).
	r[nr]	Pointer to output array of size nr.
	nh	Number of coefficents
	nr	Number of output samples

Algorithm:

DSPF_sp_fir_r2_cn.c is the natural C equivalent of the optimized linear assembly code without restrictions. Note that the linear assembly code is optimized and restrictions may apply.

Assumptions:

nr is a multiple of 2 and greater than or equal to 2.
nh is a multiple of 2 and greater than or equal to 4.
x, h and r are double-word aligned.
Coefficients in array h are expected to be in reverse order.

Implementation Notes:

Interruptibility: The code is interruptible.
Endian Support: The code supports both big and little endian modes.

---

Copyright 2014, Texas Instruments Incorporated