mkl_?coogemv

Developer Reference for Intel® oneAPI Math Kernel Library for C

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ID 766684

Date 7/13/2023

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mkl_?coogemv

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

Syntax

void mkl_scoogemv (const char *transa , 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_dcoogemv (const char *transa , 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_ccoogemv (const char *transa , 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_zcoogemv (const char *transa , 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_?coogemv routine performs a matrix-vector operation defined as

y := A*x

y := A^T*x,

where:

x and y are vectors,

A is an m-by-m sparse square matrix in the coordinate format, A^T is the transpose of A.

NOTE:

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

Input Parameters

transa

Specifies the operation.

If transa = 'N' or 'n', then the matrix-vector product is computed as y := A*x

If transa = 'T' or 't' or 'C' or 'c', then the matrix-vector product is computed as y := A^T*x,

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.

One 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_?coogemv

Syntax

Include Files

Description

Input Parameters

Output Parameters