Developer Reference

  • 2020.2
  • 07/15/2020
  • Public Content
Contents

mkl_?csrtrsv

Triangular solvers with simplified interface for a sparse matrix in the CSR format (3-array variation) with one-based indexing (deprecated).

Syntax

call mkl_scsrtrsv
(
uplo
,
transa
,
diag
,
m
,
a
,
ia
,
ja
,
x
,
y
)
call mkl_dcsrtrsv
(
uplo
,
transa
,
diag
,
m
,
a
,
ia
,
ja
,
x
,
y
)
call mkl_ccsrtrsv
(
uplo
,
transa
,
diag
,
m
,
a
,
ia
,
ja
,
x
,
y
)
call mkl_zcsrtrsv
(
uplo
,
transa
,
diag
,
m
,
a
,
ia
,
ja
,
x
,
y
)
Include Files
  • mkl.fi
Description
This routine is deprecated. Use mkl_sparse_?_trsv from the
Intel® MKL
Inspector-executor Sparse BLAS interface instead.
The
mkl_?csrtrsv
routine solves a system of linear equations with matrix-vector operations for a sparse matrix stored in the CSR format (3 array variation):
A
*
y
=
x
or
A
T
*
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 one-based indexing of the input arrays.
Input Parameters
Parameter descriptions are common for all implemented interfaces with the exception of data types that refer here to the FORTRAN 77 standard types. Data types specific to the different interfaces are described in the section
"Interfaces"
below.
uplo
CHARACTER*1
.
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.
transa
CHARACTER*1
.
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
CHARACTER*1
.
Specifies whether
A
is unit triangular.
If
diag
=
'U'
or
'u'
, then
A
is a unit triangular.
If
diag
=
'N'
or
'n'
, then
A
is not unit triangular.
m