mkl_cspblas_?coosymv

Developer Reference for Intel® oneAPI Math Kernel Library for C

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ID 766684

Date 11/07/2023

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mkl_cspblas_?coosymv

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

Syntax

void mkl_cspblas_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_cspblas_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_cspblas_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_cspblas_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_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

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 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 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_cspblas_?coosymv

Syntax

Include Files

Description

Input Parameters

Output Parameters