Vector Absolute Max value

Functions
void	csky_abs_max_q15 (q15_t *pSrc, q15_t *pDst, uint32_t blockSize)
	Q15 vector absolute max value. More...
void	csky_abs_max_q31 (q31_t *pSrc, q31_t *pDst, uint32_t blockSize)
	Q31 vector absolute max value. More...

Description

compute the absolute value of every element, and return the maxmum value of them.

    *pDst = max(abs(pSrc[n])),   0 <= n < blockSize.

support for q15 and q31 format.

Function Documentation

void csky_abs_max_q15	(	q15_t *	pSrc,
		q15_t *	pDst,
		uint32_t	blockSize
	)

Parameters

[in]	*pSrc	points to the input buffer
[out]	*pDst	points to the output buffer
[in]	blockSize	number of samples in each vector

Returns

none.

Scaling and Overflow Behavior:

The function uses saturating arithmetic. The Q15 value -1 (0x8000) will be saturated to the maximum allowable positive value 0x7FFF.

void csky_abs_max_q31	(	q31_t *	pSrc,
		q31_t *	pDst,
		uint32_t	blockSize
	)

Parameters

[in]	*pSrc	points to the input buffer
[out]	*pDst	points to the output buffer
[in]	blockSize	number of samples in each vector

Returns

none.

Scaling and Overflow Behavior:

The function uses saturating arithmetic. The Q31 value -1 (0x80000000) will be saturated to the maximum allowable positive value 0x7FFFFFFF.