Eli Hughes / CMSIS_DSP_401

V4.0.1 of the ARM CMSIS DSP libraries. Note that arm_bitreversal2.s, arm_cfft_f32.c and arm_rfft_fast_f32.c had to be removed. arm_bitreversal2.s will not assemble with the online tools. So, the fast f32 FFT functions are not yet available. All the other FFT functions are available.

Dependents:   MPU9150_Example fir_f32 fir_f32 MPU9150_nucleo_noni2cdev ... more

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Matrix Subtraction
Functions

Matrix Subtraction
[Matrix Functions]

Subtract two matrices. More...

Functions

arm_status arm_mat_sub_f32 (const arm_matrix_instance_f32 *pSrcA, const arm_matrix_instance_f32 *pSrcB, arm_matrix_instance_f32 *pDst)
 Floating-point matrix subtraction.
arm_status arm_mat_sub_q15 (const arm_matrix_instance_q15 *pSrcA, const arm_matrix_instance_q15 *pSrcB, arm_matrix_instance_q15 *pDst)
 Q15 matrix subtraction.
arm_status arm_mat_sub_q31 (const arm_matrix_instance_q31 *pSrcA, const arm_matrix_instance_q31 *pSrcB, arm_matrix_instance_q31 *pDst)
 Q31 matrix subtraction.

Detailed Description

Subtract two matrices.

MatrixSubtraction.gif

Subraction of two 3 x 3 matrices

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

Function Documentation

arm_status arm_mat_sub_f32 ( const arm_matrix_instance_f32 *  pSrcA,
const arm_matrix_instance_f32 *  pSrcB,
arm_matrix_instance_f32 *  pDst 
)

Floating-point matrix subtraction.

Parameters:
[in]*pSrcApoints to the first input matrix structure
[in]*pSrcBpoints to the second input matrix structure
[out]*pDstpoints to output matrix structure
Returns:
The function returns either ARM_MATH_SIZE_MISMATCH or ARM_MATH_SUCCESS based on the outcome of size checking.

Definition at line 72 of file arm_mat_sub_f32.c.

arm_status arm_mat_sub_q15 ( const arm_matrix_instance_q15 *  pSrcA,
const arm_matrix_instance_q15 *  pSrcB,
arm_matrix_instance_q15 *  pDst 
)

Q15 matrix subtraction.

Parameters:
[in]*pSrcApoints to the first input matrix structure
[in]*pSrcBpoints to the second input matrix structure
[out]*pDstpoints to output matrix structure
Returns:
The function returns either ARM_MATH_SIZE_MISMATCH or ARM_MATH_SUCCESS based on the outcome of size checking.

Scaling and Overflow Behavior:

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

Definition at line 66 of file arm_mat_sub_q15.c.

arm_status arm_mat_sub_q31 ( const arm_matrix_instance_q31 *  pSrcA,
const arm_matrix_instance_q31 *  pSrcB,
arm_matrix_instance_q31 *  pDst 
)

Q31 matrix subtraction.

Parameters:
[in]*pSrcApoints to the first input matrix structure
[in]*pSrcBpoints to the second input matrix structure
[out]*pDstpoints to output matrix structure
Returns:
The function returns either ARM_MATH_SIZE_MISMATCH or ARM_MATH_SUCCESS based on the outcome of size checking.

Scaling and Overflow Behavior:

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

Definition at line 67 of file arm_mat_sub_q31.c.

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