Conditions for Code Replacement of Math Functions with HVX

Each math function that can be used with the Embedded Coder^® Support Package for Qualcomm^® Hexagon^® Processors requires specific conditions to allow code replacement by using the Hexagon Vector Extension (HVX). You use this code replacement when generating C/C++ code from a model or from MATLAB^® code.

If you do not meet the specific requirements, then the generated C/C++ code runs on the Qualcomm Hexagon Processors. However, this generated code does not use library support.

The library supports these Math functions only when you set specific properties, as indicated in this table:

Function	Input Requirements	Parameter Requirements	Equivalent Functions
`sin`	Vector or matrix Real values		`qhmath_hvx_sin_af`
`cos`	Vector or matrix Real values		`qhmath_hvx_cos_af`
`sqrt`	Vector or matrix Real values	Length should be ≥ 4	`qhmath_hvx_sqrt_af`
`rsqrt` (Fixed-Point Designer)	Vector or matrix Real values		`qhmath_hvx_rsqrt_af`
`log`	Vector or matrix Real values		`qhmath_hvx_log_af`
`log2`	Vector or matrix Real values		`qhmath_hvx_log2_af`
`log10`	Vector or matrix Real values		`qhmath_hvx_log10_af`
`asin`	For MATLAB and row-major of Simulink block Vector or matrix Real values		`qhmath_hvx_asin_af`
`acos`	For MATLAB and row-major of Simulink block Vector or matrix Real values		`qhmath_hvx_acos_af`
`atan`	Vector or matrix Real values		`qhmath_hvx_atan_af`
`sinh`	Vector or matrix Real values		`qhmath_hvx_sinh_af`
`cosh`	Vector or matrix Real values		`qhmath_hvx_cosh_af`
`tanh`	Vector or matrix Real values		`qhmath_hvx_tanh_af`
`exp`	Vector or matrix Real values		`qhmath_hvx_exp_af`
`power`	Vector or matrix Real values		`qhmath_hvx_pow_af`
`tan`	Vector or matrix Real value		`qhmath_hvx_tan_af`
`hypot`	Vector or matrix Real value	Length should be ≥ 25	`qhmath_hvx_hypot_af`

Conditions for Code Replacement of Math Functions with HVX

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