mkl_?coosymv

Developer Reference for Intel® oneAPI Math Kernel Library for C

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ID 766684

Date 10/31/2024

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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

void mkl_scoosymv (const char *uplo , const MKL_INT *m , const float *val , const MKL_INT *rowind , const MKL_INT *colind , const MKL_INT *nnz , const float *x , float *y );

void mkl_dcoosymv (const char *uplo , const MKL_INT *m , const double *val , const MKL_INT *rowind , const MKL_INT *colind , const MKL_INT *nnz , const double *x , double *y );

void mkl_ccoosymv (const char *uplo , const MKL_INT *m , const MKL_Complex8 *val , const MKL_INT *rowind , const MKL_INT *colind , const MKL_INT *nnz , const MKL_Complex8 *x , MKL_Complex8 *y );

void mkl_zcoosymv (const char *uplo , const MKL_INT *m , const MKL_Complex16 *val , const MKL_INT *rowind , const MKL_INT *colind , const MKL_INT *nnz , const MKL_Complex16 *x , MKL_Complex16 *y );

Include Files

mkl.h

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

uplo

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

Number of rows of the matrix A.

val

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

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

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

colind

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

nnz

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

Refer to nnz description in Coordinate Format for more details.

x

Array, size is m.

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

Output Parameters

y

Array, size at least m.

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

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

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Developer Reference for Intel® oneAPI Math Kernel Library for C

mkl_?coosymv

Syntax

Include Files

Description

Input Parameters

Output Parameters