v?Unpack

Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

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ID 766686

Date 4/28/2026

Version

Public

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

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 )

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` .

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`