Matrix Addition

Functions
arm_status	arm_mat_add_f16 (const arm_matrix_instance_f16 *pSrcA, const arm_matrix_instance_f16 *pSrcB, arm_matrix_instance_f16 *pDst)
	Floating-point matrix addition.
arm_status	arm_mat_add_f32 (const arm_matrix_instance_f32 *pSrcA, const arm_matrix_instance_f32 *pSrcB, arm_matrix_instance_f32 *pDst)
	Floating-point matrix addition.
arm_status	arm_mat_add_q15 (const arm_matrix_instance_q15 *pSrcA, const arm_matrix_instance_q15 *pSrcB, arm_matrix_instance_q15 *pDst)
	Q15 matrix addition.
arm_status	arm_mat_add_q31 (const arm_matrix_instance_q31 *pSrcA, const arm_matrix_instance_q31 *pSrcB, arm_matrix_instance_q31 *pDst)
	Q31 matrix addition.

Description

Adds two matrices.

Addition of two 3 x 3 matrices

\[ \begin{pmatrix} a_{1,1} & a_{1,2} & a_{1,3} \\ a_{2,1} & a_{2,2} & a_{2,3} \\ a_{3,1} & a_{3,2} & a_{3,3} \\ \end{pmatrix} + \begin{pmatrix} b_{1,1} & b_{1,2} & b_{1,3} \\ b_{2,1} & b_{2,2} & b_{2,3} \\ b_{3,1} & b_{3,2} & b_{3,3} \\ \end{pmatrix} = \begin{pmatrix} a_{1,1}+b_{1,1} & a_{1,2}+b_{1,2} & a_{1,3}+b_{1,3} \\ a_{2,1}+b_{2,1} & a_{2,2}+b_{2,2} & a_{2,3}+b_{2,3} \\ a_{3,1}+b_{3,1} & a_{3,2}+b_{3,2} & a_{3,3}+b_{3,3} \\ \end{pmatrix} \]

The functions check to make sure that pSrcA, pSrcB, and pDst have the same number of rows and columns.

Function Documentation

arm_mat_add_f16()

arm_status arm_mat_add_f16	(	const arm_matrix_instance_f16 *	pSrcA,
		const arm_matrix_instance_f16 *	pSrcB,
		arm_matrix_instance_f16 *	pDst
	)

Floating-point matrix addition.

Parameters

[in]	pSrcA	points to first input matrix structure
[in]	pSrcB	points to second input matrix structure
[out]	pDst	points to output matrix structure

Returns

execution status

• ARM_MATH_SUCCESS : Operation successful
• ARM_MATH_SIZE_MISMATCH : Matrix size check failed

arm_mat_add_f32()

arm_status arm_mat_add_f32	(	const arm_matrix_instance_f32 *	pSrcA,
		const arm_matrix_instance_f32 *	pSrcB,
		arm_matrix_instance_f32 *	pDst
	)

Floating-point matrix addition.

Parameters

[in]	pSrcA	points to first input matrix structure
[in]	pSrcB	points to second input matrix structure
[out]	pDst	points to output matrix structure

Returns

execution status

• ARM_MATH_SUCCESS : Operation successful
• ARM_MATH_SIZE_MISMATCH : Matrix size check failed

arm_mat_add_q15()

arm_status arm_mat_add_q15	(	const arm_matrix_instance_q15 *	pSrcA,
		const arm_matrix_instance_q15 *	pSrcB,
		arm_matrix_instance_q15 *	pDst
	)

Q15 matrix addition.

Parameters

[in]	pSrcA	points to first input matrix structure
[in]	pSrcB	points to second input matrix structure
[out]	pDst	points to output matrix structure

Returns

execution status

• ARM_MATH_SUCCESS : Operation successful
• ARM_MATH_SIZE_MISMATCH : Matrix size check failed

Scaling and Overflow Behavior

The function uses saturating arithmetic. Results outside of the allowable Q15 range [0x8000 0x7FFF] are saturated.

arm_mat_add_q31()

arm_status arm_mat_add_q31	(	const arm_matrix_instance_q31 *	pSrcA,
		const arm_matrix_instance_q31 *	pSrcB,
		arm_matrix_instance_q31 *	pDst
	)

Q31 matrix addition.

Parameters

[in]	pSrcA	points to first input matrix structure
[in]	pSrcB	points to second input matrix structure
[out]	pDst	points to output matrix structure

Returns

execution status

• ARM_MATH_SUCCESS : Operation successful
• ARM_MATH_SIZE_MISMATCH : Matrix size check failed

Scaling and Overflow Behavior

The function uses saturating arithmetic. Results outside of the allowable Q31 range [0x80000000 0x7FFFFFFF] are saturated.