arm_dct4_instance_q31 Struct Reference

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

#include <arm_math.h>

Public Attributes
uint16_t	N
uint16_t	Nby2
q31_t	normalize
q31_t *	pTwiddle
q31_t *	pCosFactor
arm_rfft_instance_q31 *	pRfft
arm_cfft_radix4_instance_q31 *	pCfft

Detailed Description

Instance structure for the Q31 DCT4/IDCT4 function.

Member Data Documentation

N

uint16_t arm_dct4_instance_q31::N

length of the DCT4.

Nby2

uint16_t arm_dct4_instance_q31::Nby2

half of the length of the DCT4.

normalize

q31_t arm_dct4_instance_q31::normalize

normalizing factor.

pCfft

arm_cfft_radix4_instance_q31* arm_dct4_instance_q31::pCfft

points to the complex FFT instance.

pCosFactor

q31_t* arm_dct4_instance_q31::pCosFactor

points to the cosFactor table.

pRfft

arm_rfft_instance_q31* arm_dct4_instance_q31::pRfft

points to the real FFT instance.

pTwiddle

q31_t* arm_dct4_instance_q31::pTwiddle

points to the twiddle factor table.

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The documentation for this struct was generated from the following file:

• CMSIS/Include/arm_math.h