Developer Reference for Intel® oneAPI Math Kernel Library - C

Developer Reference

  • 0.9
  • 09/09/2020
  • Public Content
Contents

mkl_?diatrsv

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

Syntax

void
mkl_sdiatrsv
(
const
char
*uplo
,
const
char
*transa
,
const
char
*diag
,
const
MKL_INT
*m
,
const
float
*val
,
const
MKL_INT
*lval
,
const
MKL_INT
*idiag
,
const
MKL_INT
*ndiag
,
const
float
*x
,
float
*y
);
void
mkl_ddiatrsv
(
const
char
*uplo
,
const
char
*transa
,
const
char
*diag
,
const
MKL_INT
*m
,
const
double
*val
,
const
MKL_INT
*lval
,
const
MKL_INT
*idiag
,
const
MKL_INT
*ndiag
,
const
double
*x
,
double
*y
);
void
mkl_cdiatrsv
(
const
char
*uplo
,
const
char
*transa
,
const
char
*diag
,
const
MKL_INT
*m
,
const
MKL_Complex8
*val
,
const
MKL_INT
*lval
,
const
MKL_INT
*idiag
,
const
MKL_INT
*ndiag
,
const
MKL_Complex8
*x
,
MKL_Complex8
*y
);
void
mkl_zdiatrsv
(
const
char
*uplo
,
const
char
*transa
,
const
char
*diag
,
const
MKL_INT
*m
,
const
MKL_Complex16
*val
,
const
MKL_INT
*lval
,
const
MKL_INT
*idiag
,
const
MKL_INT
*ndiag
,
const
MKL_Complex16
*x
,
MKL_Complex16
*y
);
Include Files
  • mkl.h
Description
This routine is deprecated. Use mkl_sparse_?_trsvfrom the
Intel® oneAPI Math Kernel Library
 Inspector-executor Sparse BLAS interface instead.
The
mkl_?diatrsv
 routine solves a system of linear equations with matrix-vector operations for a sparse matrix stored in the diagonal format: 
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
uplo
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
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
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
Leading dimension of
val
,
lval
≥
m
. Refer to
lval
 description in Diagonal Storage Scheme for more details.
idiag
Array of length
ndiag
, contains the distances between main diagonal and each non-zero diagonals in the matrix
A
.
All elements of this array must be sorted in increasing order.
Refer to
distance
 array description in Diagonal Storage Scheme for more details.
ndiag
Specifies the number of non-zero diagonals of the matrix
A
.
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