mkl_cspblas_?coosymv

Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

Download PDF

ID 766686

Date 3/31/2023

Version

Public

A newer version of this document is available. Customers should click here to go to the newest version.

Visible to Intel only — GUID: GUID-F8EEA532-2305-4001-BF45-E69159CB6692

View Details

mkl_cspblas_?coosymv

Computes matrix - vector product of a sparse symmetrical matrix stored in the coordinate format with zero-based indexing (deprecated).

Syntax

call mkl_cspblas_scoosymv(uplo, m, val, rowind, colind, nnz, x, y)

call mkl_cspblas_dcoosymv(uplo, m, val, rowind, colind, nnz, x, y)

call mkl_cspblas_ccoosymv(uplo, m, val, rowind, colind, nnz, x, y)

call mkl_cspblas_zcoosymv(uplo, m, val, rowind, colind, nnz, x, y)

Include Files

mkl.fi

Description

This routine is deprecated. Use mkl_sparse_?_mvfrom the Intel® oneAPI Math Kernel Library Inspector-executor Sparse BLAS interface instead.

The mkl_cspblas_?coosymv routine performs a matrix-vector operation defined as

y := A*x

where:

x and y are vectors,

A is an upper or lower triangle of the symmetrical sparse matrix in the coordinate format with zero-based indexing.

NOTE:

This routine supports only zero-based indexing of the input arrays.

Input Parameters

Parameter descriptions are common for all implemented interfaces with the exception of data types that refer here to the FORTRAN 77 standard types. Data types specific to the different interfaces are described in the section "Interfaces" below.

uplo

CHARACTER*1. Specifies whether the upper or low triangle of the matrix A is used.

If uplo = 'U' or 'u', then the upper triangle of the matrix A is used.

If uplo = 'L' or 'l', then the low triangle of the matrix A is used.

m

INTEGER. Number of rows of the matrix A.

val

REAL for mkl_cspblas_scoosymv.

DOUBLE PRECISION for mkl_cspblas_dcoosymv.

COMPLEX for mkl_cspblas_ccoosymv.

DOUBLE COMPLEX for mkl_cspblas_zcoosymv.

Array of length nnz, contains non-zero elements of the matrix A in the arbitrary order.

Refer to values array description in Coordinate Format for more details.

rowind

INTEGER. Array of length nnz, contains the row indices for each non-zero element of the matrix A.

Refer to rows array description in Coordinate Format for more details.

colind

INTEGER. Array of length nnz, contains the column indices for each non-zero element of the matrix A. Refer to columns array description in Coordinate Format for more details.

nnz

INTEGER. Specifies the number of non-zero element of the matrix A.

Refer to nnz description in Coordinate Format for more details.

x

REAL for mkl_cspblas_scoosymv.

DOUBLE PRECISION for mkl_cspblas_dcoosymv.

COMPLEX for mkl_cspblas_ccoosymv.

DOUBLE COMPLEX for mkl_cspblas_zcoosymv.

Array, size is m.

On entry, the array x must contain the vector x.

Output Parameters

y

REAL for mkl_cspblas_scoosymv.

DOUBLE PRECISION for mkl_cspblas_dcoosymv.

COMPLEX for mkl_cspblas_ccoosymv.

DOUBLE COMPLEX for mkl_cspblas_zcoosymv.

Array, size at least m.

On exit, the array y must contain the vector y.

Interfaces

FORTRAN 77:

SUBROUTINE mkl_cspblas_scoosymv(uplo, m, val, rowind, colind, nnz, x, y)

  CHARACTER*1   uplo

  INTEGER       m, nnz

  INTEGER       rowind(*), colind(*)

  REAL           val(*), x(*), y(*)

SUBROUTINE mkl_cspblas_dcoosymv(uplo, m, val, rowind, colind, nnz, x, y)

  CHARACTER*1   uplo

  INTEGER       m, nnz

  INTEGER       rowind(*), colind(*)

  DOUBLE PRECISION        val(*), x(*), y(*)

SUBROUTINE mkl_cspblas_ccoosymv(uplo, m, val, rowind, colind, nnz, x, y)

  CHARACTER*1   uplo

  INTEGER       m, nnz

  INTEGER       rowind(*), colind(*)

  COMPLEX     val(*), x(*), y(*)

SUBROUTINE mkl_cspblas_zcoosymv(uplo, m, val, rowind, colind, nnz, x, y)

  CHARACTER*1   uplo

  INTEGER       m, nnz

  INTEGER       rowind(*), colind(*)

  DOUBLE COMPLEX      val(*), x(*), y(*)

Parent topic: Sparse BLAS Level 2 and Level 3 Routines.

Select Your Language

Using Intel.com Search

Quick Links

Recent Searches

Advanced Search

Only search in

Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

mkl_cspblas_?coosymv

FORTRAN 77: