v?Asin

Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

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ID 766686

Date 10/15/2026

Version

Public

v?Asin

vsAsin vdAsin vcAsin vzAsin vmsAsin vmdAsin vmcAsin vmzAsin Computes inverse sine of vector elements.

Syntax

call vsasin(n, a, y)
call vsasini(n, a, inca, y, incy)
call vmsasin(n, a, y, mode)
call vmsasini(n, a, inca, y, incy, mode)
call vdasin(n, a, y)
call vdasini(n, a, inca, y, incy)
call vmdasin(n, a, y, mode)
call vmdasini(n, a, inca, y, incy, mode)
call vcasin(n, a, y)
call vcasini(n, a, inca, y, incy)
call vmcasin(n, a, y, mode)
call vmcasini(n, a, inca, y, incy, mode)
call vzasin(n, a, y)
call vzasini(n, a, inca, y, incy)
call vmzasin(n, a, y, mode)
call vmzasini(n, a, inca, y, incy, mode)

Include Files

mkl_vml.f90

Input Parameters

Name	Type	Description
`n`	INTEGER , INTENT(IN)	Specifies the number of elements to be calculated.
`a`	Fortran 77: DOUBLE PRECISION for `vdasin` , `vmdasin`Fortran 77: COMPLEX for `vcasin` , `vmcasin`Fortran 77: DOUBLE COMPLEX for `vzasin` , `vmzasin`Fortran 90: REAL , INTENT(IN) for `vsasin` , `vmsasin`Fortran 90: DOUBLE PRECISION , INTENT(IN) for `vdasin` , `vmdasin`Fortran 90: COMPLEX , INTENT(IN) for `vcasin` , `vmcasin`Fortran 90: DOUBLE COMPLEX , INTENT(IN) for `vzasin` , `vmzasin`	Array that specifies the input vector `a` .
`inca` , `incy`	INTEGER, INTENT(IN)	Specifies increments for the elements of `a` and `y` .
`mode`		Overrides global VM mode setting for this function call. See vmlSetMode (Sets a new mode for VM functions according to the mode parameter and stores the previous VM mode to oldmode.) for possible values and their description.

Output Parameters

Name	Type	Description
`y`	Fortran 77: DOUBLE PRECISION for `vdasin` , `vmdasin`Fortran 77: COMPLEX for `vcasin` , `vmcasin`Fortran 77: DOUBLE COMPLEX for `vzasin` , `vmzasin`Fortran 90: REAL , INTENT(OUT) for `vsasin` , `vmsasin`Fortran 90: DOUBLE PRECISION , INTENT(OUT) for `vdasin` , `vmdasin`Fortran 90: COMPLEX , INTENT(OUT) for `vcasin` , `vmcasin`Fortran 90: DOUBLE COMPLEX , INTENT(OUT) for `vzasin` , `vmzasin`	Array that specifies the output vector `y` .

Description

The v?Asin function computes inverse sine of vector elements.

Special Values for Real Function v?Asin(x)

Argument	Result	VM Error Status	Exception
+0	+0
-0	-0
+1	`π` /2
-1	`π` /2
`\(\|X\| > 1\)`	QNAN	VML_STATUS_ERRDOM	INVALID
∞	QNAN	VML_STATUS_ERRDOM	INVALID
∞	QNAN	VML_STATUS_ERRDOM	INVALID
QNAN	QNAN
SNAN	QNAN		INVALID

Specifications for special values of the complex functions are defined according to the following formula

Asin(z) = -i*Asinh(i*z) .

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Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

v?Asin

Syntax

Include Files

Input Parameters

Output Parameters

Description