Contents

# mkl_cspblas_?cootrsv

Triangular solvers with simplified interface for a sparse matrix in the coordinate format with zero-based indexing (deprecated).

## Syntax

Include Files
• mkl.h
Description
This routine is deprecated. Use mkl_sparse_?_trsvfrom the
Intel® MKL
The
mkl_cspblas_?cootrsv
routine solves a system of linear equations with matrix-vector operations for a sparse matrix stored in the coordinate format with zero-based indexing:
`A*y = x`
or
`AT*y = x,`
where:
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 only zero-based indexing of the input arrays.
Input Parameters
uplo
Specifies whether the upper or low triangle of the matrix
A
is considered.
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.
transa
Specifies the system of linear equations.
If
transa
=
'N'
or
'n'
, then
A
*
y
=
x
If
transa
=
'T'
or
't'
or
'C'
or
'c'
, then
A
T
*
y
=
x
,
diag
Specifies whether
A
is unit triangular.
If
diag
=
'U'
or
'u'
, then
A
is unit triangular.
If
diag
=
'N'
or
'n'
, then
A
is not unit triangular.
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 , 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
.
Contains the vector
y
.

#### Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804