Developer Reference

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

mkl_cspblas_?bsrsymv

Computes matrix-vector product of a sparse symmetrical matrix stored in the BSR format (3-arrays variation) with zero-based indexing (deprecated).

Syntax

call mkl_cspblas_sbsrsymv
(
uplo
,
m
,
lb
,
a
,
ia
,
ja
,
x
,
y
)
call mkl_cspblas_dbsrsymv
(
uplo
,
m
,
lb
,
a
,
ia
,
ja
,
x
,
y
)
call mkl_cspblas_cbsrsymv
(
uplo
,
m
,
lb
,
a
,
ia
,
ja
,
x
,
y
)
call mkl_cspblas_zbsrsymv
(
uplo
,
m
,
lb
,
a
,
ia
,
ja
,
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_cspblas_?bsrsymv
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 in the BSR format (3-array variation) with zero-based indexing.
This routine supports only zero-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 block rows of the matrix
A
.
lb
INTEGER
.
Size of the block in the matrix
A
.
a
REAL
for
mkl_cspblas_sbsrsymv
.
DOUBLE PRECISION
for
mkl_cspblas_dbsrsymv
.
COMPLEX
for
mkl_cspblas_cbsrsymv
.
DOUBLE COMPLEX
for
mkl_cspblas_zbsrsymv
.
Array containing elements of non-zero blocks of the matrix
A
. Its length is equal to the number of non-zero blocks in the matrix
A
multiplied by
lb
*
lb
. Refer to
values
array description in BSR Format for more details.
ia
INTEGER
.
Array of length
(
m
+ 1)
, containing indices of block in the array
a
, such that
ia
(
i
)
is the index in the array
a
of the first non-zero element from the row
i
. The value of the last element
ia
(
m
+ 1)
is equal to the number of non-zero blocks
plus one
<