Complex Matrix Subtraction

Functions
void	csky_dsp_lib_mat_cx_sub16 (cq15_t *A, cq15_t *B, uint32 N, uint32 M, cq15_t *C)
	Q15 complex Matrix Subtraction. More...
void	csky_dsp_lib_mat_cx_sub32 (cq31_t *A, cq31_t *B, uint32 N, uint32 M, cq31_t *C)
	Q31 complex Matrix subtraction. More...

Description

Element-by-element substaction of the complex matrix in same format, the source data us form A and B, the data in A is stored in an interleaved fashion(real, imag, real, imag,...), so, the computaional process is:

    *((C+i)+2*j+0) = *((A+i)+2*j+0) - *((B+i)+2*j+0), 0 <= i < N, 0 =< j < M.
    *((C+i)+2*j+1) = *((A+i)+2*j+1) - *((B+i)+2*j+1).

support for q15 and q31 format.

Function Documentation

void csky_dsp_lib_mat_cx_sub16	(	cq15_t *	A,
		cq15_t *	B,
		uint32	N,
		uint32	M,
		cq15_t *	C
	)

Parameters

[in]	*A	points to the input buffer a
[in]	*B	points to the input buffer b
[in]	N	the number of rows of matrix
[in]	M	the number of colums of matrix
[out]	*C	points to the output buffer

Returns

none

Scaling and Overflow Behavior:

The function uses saturating arithmetic. The result will be saturated, so the out put value is in the range of [0x8000, 0x7FFF].

void csky_dsp_lib_mat_cx_sub32	(	cq31_t *	A,
		cq31_t *	B,
		uint32	N,
		uint32	M,
		cq31_t *	C
	)

Parameters

[in]	*A	points to the input buffer a
[in]	*B	points to the input buffer b
[in]	N	the number of rows of matrix
[in]	M	the number of colums of matrix
[out]	*C	points to the output buffer

Returns

none

Scaling and Overflow Behavior:

The function uses saturating arithmetic. The result will be saturated, so the out put value is in the range of [0x80000000, 0x7FFFFFFF].