Instance structure for the floating-point 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.
float32_t	normalize
	normalizing factor.
float32_t *	pTwiddle
	points to the twiddle factor table.
float32_t *	pCosFactor
	points to the cosFactor table.
arm_rfft_instance_f32 *	pRfft
	points to the real FFT instance.
arm_cfft_radix4_instance_f32 *	pCfft
	points to the complex FFT instance.

Detailed Description

Instance structure for the floating-point DCT4/IDCT4 function.

Definition at line 2255 of file arm_math.h.

Field Documentation

uint16_t N

length of the DCT4.

Definition at line 2257 of file arm_math.h.

uint16_t Nby2

half of the length of the DCT4.

Definition at line 2258 of file arm_math.h.

float32_t normalize

normalizing factor.

Definition at line 2259 of file arm_math.h.

points to the complex FFT instance.

Definition at line 2263 of file arm_math.h.

float32_t* pCosFactor

points to the cosFactor table.

Definition at line 2261 of file arm_math.h.

points to the real FFT instance.

Definition at line 2262 of file arm_math.h.

float32_t* pTwiddle

points to the twiddle factor table.

Definition at line 2260 of file arm_math.h.