v?Unpack

Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

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ID 766686

Date 10/15/2026

Version

Public

v?Unpack

Copies elements of a vector with unit increment to an array with specified indexing.

Syntax

call vsunpacki(n, a, y, incy)
call vsunpackv(n, a, y, iy)
call vsunpackm(n, a, y, my)
call vdunpacki(n, a, y, incy)
call vdunpackv(n, a, y, iy)
call vdunpackm(n, a, y, my)
call vcunpacki(n, a, y, incy)
call vcunpackv(n, a, y, iy)
call vcunpackm(n, a, y, my)
call vzunpacki(n, a, y, incy)
call vzunpackv(n, a, y, iy)
call vzunpackm(n, a, y, my)

Include Files

mkl_vml.f90

Input Parameters

Name	Type	Description
`n`	Fortran 90: INTEGER , INTENT(IN)	Specifies the number of elements to be calculated.
`a`	Fortran 77: DOUBLE PRECISION for `vdunpacki` , `vdunpackv` , `vdunpackm`Fortran 77: COMPLEX for `vcunpacki` , `vcunpackv` , `vcunpackm`Fortran 77: DOUBLE COMPLEX for `vzunpacki` , `vzunpackv` , `vznpackm`Fortran 90: REAL , INTENT(IN) for `vsunpacki` , `vsunpackv` , `vsunpackm`Fortran 90: DOUBLE PRECISION , INTENT(IN) for `vdunpacki` , `vdunpackv` , `vdunpackm`Fortran 90: COMPLEX , INTENT(IN) for `vcunpacki` , `vcunpackv` , `vcunpackm`Fortran 90: DOUBLE COMPLEX , INTENT(IN) for `vzunpacki` , `vzunpackv` , `vzunpackm`	Array, DIMENSION at least `n` . Specifies the input vector `a` .
`incy`	Fortran 90: INTEGER , INTENT(IN) for `vsunpacki` , `vdunpacki` , `vcunpacki` , `vzunpacki`	Specifies the increment for the elements of `y` .
`iy`		Array, DIMENSION at least `n` . Specifies the index vector for the elements of `y` .
`my`	Fortran 90: INTEGER , INTENT(IN) for `vsunpackm` , `vdunpackm` , `vcunpackm` , `vzunpackm`	Array, DIMENSION at least `n` , Specifies the mask vector for the elements of `y` .

Output Parameters

Name	Type	Description
`y`	Fortran 77: DOUBLE PRECISION for `vdunpacki` , `vdunpackv` , `vdunpackm`Fortran 90: COMPLEX , INTENT(IN) for `vcunpacki` , `vcunpackv` , `vcunpackm`Fortran 90: DOUBLE COMPLEX , INTENT(IN) for `vzunpacki` , `vzunpackv` , `vzunpackm`Fortran 90: REAL , INTENT(OUT) for `vsunpacki` , `vsunpackv` , `vsunpackm`Fortran 90: DOUBLE PRECISION , INTENT(OUT) for `vdunpacki` , `vdunpackv` , `vdunpackm`Fortran 90: COMPLEX , INTENT(OUT) for `vcunpacki` , `vcunpackv` , `vcunpackm`Fortran 90: DOUBLE COMPLEX , INTENT(OUT) for `vzunpacki` , `vzunpackv` , `vzunpackm`	Array, DIMENSION * for `v?unpacki` , at least `(1 + (n-1)incy)` for `v?unpackv` , at least `max( n,max(iy[j]) ),j=0,..., n-1` * for `v?unpackm` , at least `n`

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Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

v?Unpack

Syntax

Include Files

Input Parameters

Output Parameters