Conditions for Code Replacement of Math Functions with QHL

Each math function that can be used with the Support Package for Qualcomm Hexagon Processors requires specific conditions to allow code replacement by using the Qualcomm Hexagon Library (QHL). 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
1	`sin`	Input can be scalar/vector/matrix Real or Complex Values		Scalar real inputs `qhmath_sin_f` Scalar, vector, and matrix real inputs `qhmath_sin_af` Scalar, vector, and matrix complex inputs `mw_qhcomplex_csin_f`
2	`cos`	Input can be scalar/vector/matrix Real or Complex Values		Scalar real inputs `qhmath_cos_f` Scalar, vector, and matrix real inputs `qhmath_cos_af` Scalar, vector, and matrix complex inputs `mw_qhcomplex_ccos_f`
3	`abs`	Input can be scalar/vector/matrix Real Values	Input Length > 11	Vector, and matrix real inputs `qhmath_abs_af`
4	`sqrt`	Input can be scalar/vector/matrix Real Values		Scalar real inputs `qhmath_sqrt_f` Vector, and matrix real inputs `qhmath_sqrt_af`
5	`rsqrt` (Fixed-Point Designer)	Input can be scalar/vector/matrix Real Values		Scalar real inputs `qhmath_rsqrt_f` Vector, and matrix real inputs `qhmath_rsqrt_af`
6	`log`	Input can be scalar/vector/matrix Real and Complex values		Scalar real inputs `qhmath_log_f` Vector, and matrix real inputs `qhmath_log_af` Scalar complex inputs `mw_qhcomplex_clog_f` Vector and matrix complex inputs `mw_qhcomplex_clog_af`
7	`log2`	Input can be scalar/vector/matrix Real values		Scalar real inputs `qhmath_log2_f` Vector, and matrix real inputs `qhmath_log2_af`
8	`log10`	Input can be scalar/vector/matrix Real values		Scalar real inputs `qhmath_log10_f` Vector, and matrix real inputs `qhmath_log10_af`
9	`asin`	Input can be scalar/vector/matrix Real and Complex values		Scalar real inputs `qhmath_asin_f` vector, and matrix real inputs `qhmath_asin_af` scalar complex inputs `mw_qhcomplex_casin_f` Vector, and Matrix complex inputs `mw_qhcomplex_casin_af`
10	`acos`	Input can be scalar/vector/matrix Real and Complex values		Scalar real inputs `qhmath_acos_f` vector, and matrix real inputs `qhmath_acos_af` scalar complex inputs `mw_qhcomplex_cacos_f` Vector, and Matrix complex inputs `mw_qhcomplex_cacos_af`
11	`atan`	Input can be scalar/vector/matrix Real and Complex values		Scalar real inputs `qhmath_atan_f` vector, and matrix real inputs `qhmath_atan_af` scalar complex inputs `mw_qhcomplex_catan_f` Vector, and Matrix complex inputs `mw_qhcomplex_catan_af`
12	`sinh`	Input can be scalar/vector/matrix Real and Complex values		Scalar real inputs `qhmath_asinh_f` vector, and matrix real inputs `qhmath_asinh_af` scalar complex inputs `mw_qhcomplex_csinh_f` Vector, and Matrix complex inputs `mw_qhcomplex_csinh_af`
13	`cosh`	Input can be scalar/vector/matrix Real and Complex values		Scalar real inputs `qhmath_acosh_f` vector, and matrix real inputs `qhmath_acosh_af` scalar complex inputs `mw_qhcomplex_ccosh_f` Vector, and Matrix complex inputs `mw_qhcomplex_ccosh_af`
14	`tanh`	Input can be scalar/vector/matrix Real and Complex values		Scalar real inputs `qhmath_ctanh_f` vector, and matrix real inputs `qhmath_ctanh_af` scalar complex inputs `mw_qhcomplex_ctanh_f` Vector, and Matrix complex inputs `mw_qhcomplex_ccosh_af`
15	`exp`	Input can be scalar/vector/matrix Real and Complex values		Scalar real inputs `qhmath_cexp_f` vector, and matrix real inputs `qhmath_cexp_af` scalar complex inputs `mw_qhcomplex_cexp_f` Vector, and Matrix complex inputs `mw_qhcomplex_cexp_af`
16	`power`	Input can be scalar/vector/matrix Real and Complex values		Scalar, matrix real inputs (base) and vector, matrix real inputs (exponent) `mw_qhmath_pow_f` Vector real inputs (base) and scalar real inputs (exponent) `qhmath_pow_af` Scalar, vector, and matrix complex inputs (base and exponent) `mw_qhcomplex_cpow_f`

Conditions for Code Replacement of Math Functions with QHL

See Also

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