Vector Absolute Max value

Functions
q15_t	csky_dsp_lib_vec_max_abs16 (q15_t *A, uint32_t N)
	Q15 vector absolute max value. More...
q31_t	csky_dsp_lib_vec_max_abs32 (q31_t *A, uint32_t N)
	Q31 vector absolute max value. More...

Description

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

    Result = max(abs(*(A+i))),   0 <= i < N.

support for q15 and q31 format.

Function Documentation

q15_t csky_dsp_lib_vec_max_abs16	(	q15_t *	A,
		uint32_t	N
	)

Parameters

[in]	*A	points to the input buffer
[in]	N	number of samples in each vector

Returns

the max value of all the absolute values of the vector

Scaling and Overflow Behavior:

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

q31_t csky_dsp_lib_vec_max_abs32	(	q31_t *	A,
		uint32_t	N
	)

Parameters

[in]	*A	points to the input buffer
[in]	N	number of samples in each vector

Returns

the max value of all the absolute values of the vector

Scaling and Overflow Behavior:

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