Developer Reference

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

mkl_?diasymv

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

Syntax

call mkl_sdiasymv
(
uplo
,
m
,
val
,
lval
,
idiag
,
ndiag
,
x
,
y
)
call mkl_ddiasymv
(
uplo
,
m
,
val
,
lval
,
idiag
,
ndiag
,
x
,
y
)
call mkl_cdiasymv
(
uplo
,
m
,
val
,
lval
,
idiag
,
ndiag
,
x
,
y
)
call mkl_zdiasymv
(
uplo
,
m
,
val
,
lval
,
idiag
,
ndiag
,
x
,
y
)
Include Files
  • mkl.fi
Description
This routine is deprecated. Use mkl_sparse_?_mv from the
Intel® MKL
Inspector-executor Sparse BLAS interface instead.
The
mkl_?diasymv
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.
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.
m
INTEGER
.
Number of rows of the matrix
A
.
val
REAL
for
mkl_sdiasymv
.
DOUBLE PRECISION
for
mkl_ddiasymv
.
COMPLEX
for
mkl_cdiasymv
.
DOUBLE COMPLEX
for
mkl_zdiasymv
.
Two-dimensional array of size
lval
by
ndiag
, contains non-zero diagonals of the matrix
A
. Refer to
values
array description in Diagonal Storage Scheme for more details.
lval
INTEGER
.
Leading dimension of
val
,
lval
m
. Refer to
lval
description in Diagonal Storage Scheme for more details.
idiag
INTEGER
.
Array of length
ndiag
, contains the distances between main diagonal and each non-zero diagonals in the matrix
A
.
Refer to
distance
array description in Diagonal Storage Scheme for more details.
ndiag