Vector Absolute value

Functions
void	csky_dsp_lib_vec_abs16 (q15_t *A, uint32_t N, q15_t *C)
	Q15 vector absolute value. More...
void	csky_dsp_lib_vec_abs32 (q31_t *A, uint32_t N, q31_t *C)
	Q31 vector absolute value. More...

Description

compute the absolute value of every element, the computaional process is:

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

support for q15 and q31 format.

Function Documentation

void csky_dsp_lib_vec_abs16	(	q15_t *	A,
		uint32_t	N,
		q15_t *	C
	)

Parameters

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

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_dsp_lib_vec_abs32	(	q31_t *	A,
		uint32_t	N,
		q31_t *	C
	)

Parameters

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

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.