Supported MATLAB Functions with CMSIS Library for ARM Cortex-A Processors

The Embedded Coder^® Support Package for ARM^® Cortex^®-A Processors provides a code replacement library (CRL) ARM Cortex-A CMSIS to generate calls to CMSIS-DSP library optimized for ARM Cortex-A processors.

For more information on CMSIS-DSP library, see https://github.com/ARM-software/CMSIS-DSP.

Note

ARM Cortex-A CMSIS CRL supports both 32 bit and 64 bit ARM Cortex-A architectures.
Only 64 bit ARM Cortex-A architectures support the half data type.
If you encounter situations where the ARM Cortex-A CMSIS CRL does not provide code replacements due to the input vector length being below the threshold, you can enable CMSIS function generation for all input lengths. To do this, set the environment variable DISABLE_ARMCORTEXA_CMSIS_CRL_THRESHOLDS to true using the following command:
```
setenv('DISABLE_ARMCORTEXA_CMSIS_CRL_THRESHOLDS',true)
```

Basic Math Operations

Operation	Wrappers calling CMSIS Function	Supported data types	Input/Output specifications	Replaced MATLAB^® function or operator
Elementwise real addition	`mw_arm_add_f64` `mw_arm_add_f32` `mw_arm_add_f16` `mw_arm_add_q31` `mw_arm_add_q15` `mw_arm_add_q7`	`double` `single` `half` `fixdt(true,32,)` `fixdt(true,16,)` `fixdt(true,8,*)`	Vector Matrix Both input and output must have same word length and datatype.	`plus`
Real vector offset	`mw_arm_offset_f64` `mw_arm_offset_f32` `mw_arm_offset_f16` `mw_arm_offset_q31` `mw_arm_offset_q15` `mw_arm_offset_q7`			`plus`
Elementwise real subtraction	`mw_arm_sub_f64` `mw_arm_sub_f32` `mw_arm_sub_f16` `mw_arm_sub_q31` `mw_arm_sub_q15` `mw_arm_sub_q7`	`double` `single` `half` `fixdt(true,32,)` `fixdt(true,16,)` `fixdt(true,8,*)`	Vector Matrix Both inputs must be of the same datatype and word length. Both input and output must have same word length.	`minus`
Elementwise real multiplication	`mw_arm_mult_f64` `mw_arm_mult_f32` `mw_arm_mult_f16` `mw_arm_mult_q31` `mw_arm_mult_q15` `mw_arm_mult_q7`	`double` `single` `half` `fixdt(true,32,)` `fixdt(true,16,)` `fixdt(true,8,*)`	Vector Matrix Both input and output must be of same word length. Ensure that inputs with floating-point data types, such as double, single, or half, are of the same type. For fixed point inputs, both the inputs must be of equal word length. Fixed point real element-wise multiplication: For inputs of type, `fixdt(true,32,L1)` and `fixdt(true,32,L2)`, the output will be of type `fixdt(true,32,L1+L2-31)` For inputs of type, `fixdt(true,16,L1)` and `fixdt(true,16,L2)`, the output can be of type `fixdt(true,16,L1+L2-15)`. For inputs of type, `fixdt(true,8,L1)` and `fixdt(true,8,L2)`, the output can be of type `fixdt(true,8,L1+L2-7)`.	`times` `mpy` (Fixed-Point Designer)
Real vector scale	`mw_arm_scale_f64` `mw_arm_scale_f32` `mw_arm_scale_f16` `mw_arm_scale_q31` `mw_arm_scale_q15` `mw_arm_scale_q7`			`mpy` (Fixed-Point Designer)
Real absolute	`mw_arm_abs_f64` `mw_arm_abs_f32` `mw_arm_abs_f16` `mw_arm_abs_q31` `mw_arm_abs_q15` `mw_arm_abs_q7`	`double` `single` `half` `fixdt(true,32,31)` `fixdt(true,16,15)` `fixdt(true,8,7)`	Vector Matrix Both input and output must have same word length.	`abs`
Real dot product	`mw_arm_dot_prod_f64` `mw_arm_dot_prod_f32` `mw_arm_dot_prod_q31` `mw_arm_dot_prod_q15` `mw_arm_dot_prod_q7`	`double` `single` `fixdt(true,32,)` `fixdt(true,16,)` `fixdt(true,8,*)`	Vector Fixed point real dot product: For inputs of type, `fixdt(true,32,L1)` and `fixdt(true,32,L2)`, the output will be of type `fixdt(true,64,L1+L2-14)` For inputs of type, `fixdt(true,16,L1)` and `fixdt(true,16,L2)`, the output can be of type `fixdt(true,64,L1+L2)`, `fixdt(true,32,L1+L2-6)`, or `fixdt(true,16,L1+L2-18)`.	`dot`
Vector log real	`mw_arm_vlog_f64` `mw_arm_vlog_f32`	`double` `single`	Scalar Vector Matrix	`log`
Vector exponential real	`mw_arm_vexp_f64` `mw_arm_vexp_f32` `mw_arm_vexp_f16`	`double` `single` `half`	Scalar Vector Matrix	`exp`

Complex Math Operations

Operation	Wrappers calling CMSIS Function	Supported data types	Input/Output specifications	Replaced MATLAB function or operator
Complex dot product	`mw_arm_cmplx_dot_prod_f32`	`single`	Vector Complex inputs	`dot`
Complex-by-complex multiplication	`mw_arm_cmplx_mult_cmplx_f64` `mw_arm_cmplx_mult_cmplx_f32`	`double` `single`	Vector and matrix Both inputs must be complex	`mtimes`
Complex-by-real multiplication	`mw_arm_cmplx_mult_real_f32` `mw_arm_real_mult_cmplx_f32`	`single`	Vector and matrix Real and complex inputs One input must be real and the other input must be complex	`mtimes`

Matrix Operations

Operation	Function name	Supported data types	Input/Output specifications	Replaced MATLAB function or operator
Matrix-by-vector multiplication	`neon_mv_mul_u8x16`	`uint8`	Vector and matrix Number of rows and columns of first input must be a multiple of 16 to get code replacement. Number of rows of second input must be a multiple of 16 to get code replacement.	`mtimes`
	`neon_mv_mul_u16x8`	`uint16`	Vector and matrix Number of rows and columns of first input must be a multiple of 8 to get code replacement. Number of rows of second input must be a multiple of 8 to get code replacement.
	`neon_mv_mul_u32x4`	`uint32`	Vector and matrix Number of rows and columns of first input must be a multiple of 4 to get code replacement. Number of rows of second input must be a multiple of 4 to get code replacement.
Matrix-by-matrix multiplication	`neon_mm_mul_u16x8`	`uint16`	Matrix Number of rows and columns of first and second input must be a multiple of 8 to get code replacement.
Matrix-by-matrix multiplication	`neon_mm_mul_u32x4`	`uint32`	Matrix Number of rows and columns of first and second input must be a multiple of 4 to get code replacement.

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