mkl_?coosymv

Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

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ID 766686

Date 3/22/2024

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mkl_?coosymv

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

Syntax

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

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

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

call mkl_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 (oneMKL) Inspector-executor Sparse BLAS interface instead.

The mkl_?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.

NOTE:

This routine supports only one-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_scoosymv.

DOUBLE PRECISION for mkl_dcoosymv.

COMPLEX for mkl_ccoosymv.

DOUBLE COMPLEX for mkl_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_scoosymv.

DOUBLE PRECISION for mkl_dcoosymv.

COMPLEX for mkl_ccoosymv.

DOUBLE COMPLEX for mkl_zcoosymv.

Array, size is m.

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

Output Parameters

y

REAL for mkl_scoosymv.

DOUBLE PRECISION for mkl_dcoosymv.

COMPLEX for mkl_ccoosymv.

DOUBLE COMPLEX for mkl_zcoosymv.

Array, size at least m.

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

Interfaces

FORTRAN 77:

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

  CHARACTER*1   uplo

  INTEGER       m, nnz

  INTEGER       rowind(*), colind(*)

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

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

  CHARACTER*1   uplo

  INTEGER       m, nnz

  INTEGER       rowind(*), colind(*)

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

SUBROUTINE mkl_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.

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Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

mkl_?coosymv

Syntax

Include Files

Description

Input Parameters

Output Parameters

Interfaces

FORTRAN 77: