indxg2p.f File Reference

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Functions/Subroutines
integer function	indxg2p (indxglob, nb, iproc, isrcproc, nprocs)

Function/Subroutine Documentation

indxg2p()

integer function indxg2p	(	integer	indxglob,
		integer	nb,
		integer	iproc,
		integer	isrcproc,
		integer	nprocs )

Definition at line 1 of file indxg2p.f.

*
*  -- ScaLAPACK tools routine (version 1.7) --
*     University of Tennessee, Knoxville, Oak Ridge National Laboratory,
*     and University of California, Berkeley.
*     May 1, 1997
*
*     .. Scalar Arguments ..
      INTEGER            INDXGLOB, IPROC, ISRCPROC, NB, NPROCS
*     ..
*
*  Purpose
*  =======
*
*  INDXG2P computes the process coordinate which posseses the entry of a
*  distributed matrix specified by a global index INDXGLOB.
*
*  Arguments
*  =========
*
*  INDXGLOB  (global input) INTEGER
*            The global index of the element.
*
*  NB        (global input) INTEGER
*            Block size, size of the blocks the distributed matrix is
*            split into.
*
*  IPROC     (local dummy) INTEGER
*            Dummy argument in this case in order to unify the calling
*            sequence of the tool-routines.
*
*  ISRCPROC  (global input) INTEGER
*            The coordinate of the process that possesses the first
*            row/column of the distributed matrix.
*
*  NPROCS    (global input) INTEGER
*            The total number processes over which the matrix is
*            distributed.
*
*  =====================================================================
*
*     .. Intrinsic Functions ..
      INTRINSIC          mod
*     ..
*     .. Executable Statements ..
*
      indxg2p = mod( isrcproc + (indxglob - 1) / nb, nprocs )
*
      RETURN
*
*     End of INDXG2P
*