v?Asin

Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

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ID 766686

Date 4/28/2026

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