?sctr

Syntax

FORTRAN 77:

call ssctr(nz, x, indx, y )

call dsctr(nz, x, indx, y )

call csctr(nz, x, indx, y )

call zsctr(nz, x, indx, y )

Fortran 95:

call sctr(x, indx, y)

Include Files

The FORTRAN 77 interfaces are specified in the mkl_blas.fi include file, the Fortran 95 interfaces are specified in the blas.f90 include file, and the C interfaces are specified in the mkl_blas.h include file.

Description

The ?sctr routines scatter the elements of the compressed sparse vector (nz, x, indx) to a full-storage vector y. The routines modify only the elements of y whose indices are listed in the array indx:

y(indx(i) = x(i), for i=1,2,... +nz.

Input Parameters

nz

INTEGER. The number of elements of x to be scattered.

indx

INTEGER. Specifies indices of elements to be scattered.

Array, DIMENSION at least nz.

x

REAL for ssctr

DOUBLE PRECISION for dsctr

COMPLEX for csctr

DOUBLE COMPLEX for zsctr

Array, DIMENSION at least nz.

Contains the vector to be converted to full-storage form.

Output Parameters

y

REAL for ssctr

DOUBLE PRECISION for dsctr

COMPLEX for csctr

DOUBLE COMPLEX for zsctr

Array, DIMENSION at least max(indx(i)).

Contains the vector y with updated elements.

Fortran 95 Interface Notes

Routines in Fortran 95 interface have fewer arguments in the calling sequence than their FORTRAN 77 counterparts. For general conventions applied to skip redundant or reconstructible arguments, see Fortran 95 Interface Conventions.

Specific details for the routine sctr interface are the following:

x

Holds the vector with the number of elements nz.

indx

Holds the vector with the number of elements nz.

y

Holds the vector with the number of elements nz.