Instance structure for the Q31 DCT4/IDCT4 function. More...

#include <arm_math.h>

Data Fields
uint16_t	N
	length of the DCT4.
uint16_t	Nby2
	half of the length of the DCT4.
q31_t	normalize
	normalizing factor.
q31_t *	pTwiddle
	points to the twiddle factor table.
q31_t *	pCosFactor
	points to the cosFactor table.
arm_rfft_instance_q31 *	pRfft
	points to the real FFT instance.
arm_cfft_radix4_instance_q31 *	pCfft
	points to the complex FFT instance.

Detailed Description

Instance structure for the Q31 DCT4/IDCT4 function.

Definition at line 2301 of file arm_math.h.

Field Documentation

uint16_t N

length of the DCT4.

Definition at line 2303 of file arm_math.h.

uint16_t Nby2

half of the length of the DCT4.

Definition at line 2304 of file arm_math.h.

normalizing factor.

Definition at line 2305 of file arm_math.h.

points to the complex FFT instance.

Definition at line 2309 of file arm_math.h.

points to the cosFactor table.

Definition at line 2307 of file arm_math.h.

points to the real FFT instance.

Definition at line 2308 of file arm_math.h.

points to the twiddle factor table.

Definition at line 2306 of file arm_math.h.