mkl_?coosv
mkl_?coosv
Solves a system of linear equations for a sparse matrix in the coordinate format (deprecated).
Syntax
void
mkl_scoosv
(
const
char
*transa
,
const
MKL_INT
*m
,
const
float
*alpha
,
const
char
*matdescra
,
const
float
*val
,
const
MKL_INT
*rowind
,
const
MKL_INT
*colind
,
const
MKL_INT
*nnz
,
const
float
*x
,
float
*y
);
void
mkl_dcoosv
(
const
char
*transa
,
const
MKL_INT
*m
,
const
double
*alpha
,
const
char
*matdescra
,
const
double
*val
,
const
MKL_INT
*rowind
,
const
MKL_INT
*colind
,
const
MKL_INT
*nnz
,
const
double
*x
,
double
*y
);
void
mkl_ccoosv
(
const
char
*transa
,
const
MKL_INT
*m
,
const
MKL_Complex8
*alpha
,
const
char
*matdescra
,
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_zcoosv
(
const
char
*transa
,
const
MKL_INT
*m
,
const
MKL_Complex16
*alpha
,
const
char
*matdescra
,
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_?_trsvfrom the Inspector-executor Sparse BLAS interface instead.
Intel® oneAPI Math Kernel Library
The
mkl_?coosv
routine solves a system of linear equations with matrix-vector operations for a sparse matrix in the coordinate format: y := alpha*inv(A)*x
or
y := alpha*inv(AT)*x,
where:
alpha
is scalar, x
and y
are vectors, A
is a sparse upper or lower triangular matrix with unit or non-unit main diagonal, A
T
is the transpose of A
.This routine supports a coordinate format both with one-based indexing and zero-based indexing.
Input Parameters
- transa
- Specifies the system of linear equations.Ifortransa='N''n', theny:=alpha*inv(A)*xIfortransa='T''t'or'C'or'c', then,y:=alpha*inv(AT)*x
- m
- Number of rows of the matrixA.
- alpha
- Specifies the scalaralpha.
- matdescra
- Array of six elements, specifies properties of the matrix used for operation. Only first four array elements are used, their possible values are given inTable “Possible Values of the Parameter. Possible combinations of element values of this parameter are given inmatdescra(descra)”Table “Possible Combinations of Element Values of the Parameter.matdescra”
- val
- Array of lengthnnz, contains non-zero elements of the matrixAin the arbitrary order.Refer tovaluesarray description in Coordinate Format for more details.
- rowind
- Array of lengthnnz.For one-based indexing, contains the row indices plus one for each non-zero element of the matrixA.For zero-based indexing, contains the row indices for each non-zero element of the matrixA.Refer torowsarray description in Coordinate Format for more details.
- colind
- Array of lengthnnz.For one-based indexing, contains the column indices plus one for each non-zero element of the matrixA.For zero-based indexing, contains the column indices for each non-zero element of the matrixA.Refer tocolumnsarray description in Coordinate Format for more details.
- nnz
- Specifies the number of non-zero element of the matrixA.Refer tonnzdescription in Coordinate Format for more details.
- x
- Array, size at leastm.On entry, the arrayxmust contain the vectorx. The elements are accessed with unit increment.
- y
- Array, size at leastm.On entry, the arrayymust contain the vectory. The elements are accessed with unit increment.
Output Parameters
- y
- Contains solution vectorx.