Callisto4Bootloader: arm_dct4_instance_q31 Struct Reference

Callisto4Bootloader

Data Fields
arm_dct4_instance_q31 Struct Reference

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

`#include <arm_math.h>`

## Data Fields

uint16_t | N
uint16_t | Nby2
q31_t | normalize
const q31_t * | pTwiddle
const q31_t * | pCosFactor
arm_rfft_instance_q31 * | pRfft
arm_cfft_radix4_instance_q31 * | pCfft

## Detailed Description

Instance structure for the Q31 DCT4/IDCT4 function.

Definition at line 2321 of file arm_math.h.

## Field Documentation

## ◆ N

uint16_t arm_dct4_instance_q31::N

length of the DCT4.

Definition at line 2323 of file arm_math.h.

## ◆ Nby2

uint16_t arm_dct4_instance_q31::Nby2

half of the length of the DCT4.

Definition at line 2324 of file arm_math.h.

## ◆ normalize

q31_t arm_dct4_instance_q31::normalize

normalizing factor.

Definition at line 2325 of file arm_math.h.

## ◆ pCfft

arm_cfft_radix4_instance_q31* arm_dct4_instance_q31::pCfft

points to the complex FFT instance.

Definition at line 2329 of file arm_math.h.

## ◆ pCosFactor

const q31_t* arm_dct4_instance_q31::pCosFactor

points to the cosFactor table.

Definition at line 2327 of file arm_math.h.

## ◆ pRfft

arm_rfft_instance_q31* arm_dct4_instance_q31::pRfft

points to the real FFT instance.

Definition at line 2328 of file arm_math.h.

## ◆ pTwiddle

const q31_t* arm_dct4_instance_q31::pTwiddle

points to the twiddle factor table.

Definition at line 2326 of file arm_math.h.

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

- CMSIS/arm_math.h