mkl_?csrmm
mkl_?csrmm
Computes matrix - matrix product of a sparse matrix stored in the CSR format (deprecated).
Syntax
void
mkl_scsrmm
(
const
char
*transa
,
const
MKL_INT
*m
,
const
MKL_INT
*n
,
const
MKL_INT
*k
,
const
float
*alpha
,
const
char
*matdescra
,
const
float
*val
,
const
MKL_INT
*indx
,
const
MKL_INT
*pntrb
,
const
MKL_INT
*pntre
,
const
float
*b
,
const
MKL_INT
*ldb
,
const
float
*beta
,
float
*c
,
const
MKL_INT
*ldc
);
void
mkl_dcsrmm
(
const
char
*transa
,
const
MKL_INT
*m
,
const
MKL_INT
*n
,
const
MKL_INT
*k
,
const
double
*alpha
,
const
char
*matdescra
,
const
double
*val
,
const
MKL_INT
*indx
,
const
MKL_INT
*pntrb
,
const
MKL_INT
*pntre
,
const
double
*b
,
const
MKL_INT
*ldb
,
const
double
*beta
,
double
*c
,
const
MKL_INT
*ldc
);
void
mkl_ccsrmm
(
const
char
*transa
,
const
MKL_INT
*m
,
const
MKL_INT
*n
,
const
MKL_INT
*k
,
const
MKL_Complex8
*alpha
,
const
char
*matdescra
,
const
MKL_Complex8
*val
,
const
MKL_INT
*indx
,
const
MKL_INT
*pntrb
,
const
MKL_INT
*pntre
,
const
MKL_Complex8
*b
,
const
MKL_INT
*ldb
,
const
MKL_Complex8
*beta
,
MKL_Complex8
*c
,
const
MKL_INT
*ldc
);
void
mkl_zcsrmm
(
const
char
*transa
,
const
MKL_INT
*m
,
const
MKL_INT
*n
,
const
MKL_INT
*k
,
const
MKL_Complex16
*alpha
,
const
char
*matdescra
,
const
MKL_Complex16
*val
,
const
MKL_INT
*indx
,
const
MKL_INT
*pntrb
,
const
MKL_INT
*pntre
,
const
MKL_Complex16
*b
,
const
MKL_INT
*ldb
,
const
MKL_Complex16
*beta
,
MKL_Complex16
*c
,
const
MKL_INT
*ldc
);
Include Files
- mkl.h
Description
This routine is deprecated. Use Use mkl_sparse_?_mmfrom the Inspector-executor Sparse BLAS interface instead.
Intel® oneAPI Math Kernel Library
The
mkl_?csrmm
routine performs a matrix-matrix operation defined as C := alpha*A*B + beta*C
or
C := alpha*AT*B + beta*C
or
C := alpha*AH*B + beta*C,
where:
alpha
and beta
are scalars, B
and C
are dense matrices, A
is an m
-by-k
sparse matrix in compressed sparse row (CSR) format, A
T
is the transpose of A
, and A
H
is the conjugate transpose of A
.This routine supports a CSR format both with one-based indexing and zero-based indexing.
Input Parameters
- transa
- Specifies the operation.Ifortransa='N''n', then,C:=alpha*A*B+beta*CIfortransa='T''t', then,C:=alpha*AT*B+beta*CIftransa='C'or'c', then.C:=alpha*AH*B+beta*C
- m
- Number of rows of the matrixA.
- n
- Number of columns of the matrixC.
- k
- Number of columns of the matrixA.
- alpha
- Specifies the scalaralpha.
- matdescra
- Array of six elements, specifies properties of the matrix used for operation. Only first four array elements are used, their possible values are given inTable “Possible Values of the Parameter. Possible combinations of element values of this parameter are given inmatdescra(descra)”Table “Possible Combinations of Element Values of the Parameter.matdescra”
- val
- Array containing non-zero elements of the matrixA.For zero-based indexing its length is.pntre[m—1] -pntrb[0]Refer tovaluesarray description in CSR Format for more details.
- indx
- For one-based indexing, array containing the column indices plus one for each non-zero element of the matrixA.For zero-based indexing, array containing the column indices for each non-zero element of the matrixA.Its length is equal to length of thevalarray.Refer tocolumnsarray description in CSR Format for more details.
- pntrb
- Array of lengthm.This array contains row indices, such thatis the first index of rowpntrb[I] -pntrb[0]Iin the arraysvalandindx.Refer topointerbarray description in CSR Format for more details.
- pntre
- Array of lengthm.This array contains row indices, such thatis the last index of rowpntre[I] -pntrb[0] - 1Iin the arraysvalandindx.Refer topointerEarray description in CSR Format for more details.
- b
- Array, sizeldbby at leastnfor non-transposed matrixAand at leastmfor transposed for one-based indexing, and (at leastkfor non-transposed matrixAand at leastmfor transposed,ldb) for zero-based indexing.On entry withortransa='N''n', the leadingk-by-npart of the arraybmust contain the matrixB, otherwise the leadingm-by-npart of the arraybmust contain the matrixB.
- ldb
- Specifies the leading dimension ofbfor one-based indexing, and the second dimension ofbfor zero-based indexing, as declared in the calling (sub)program.
- beta
- Specifies the scalarbeta.
- c
- Array, sizeldcbynfor one-based indexing, and(for zero-based indexing.m,ldc)On entry, the leadingm-by-npart of the arraycmust contain the matrixC, otherwise the leadingk-by-npart of the arraycmust contain the matrixC.
- ldc
- Specifies the leading dimension ofcfor one-based indexing, and the second dimension ofcfor zero-based indexing, as declared in the calling (sub)program.
Output Parameters
- c
- Overwritten by the matrix(,alpha*A*B+beta*C)(, oralpha*AT*B+beta*C)(.alpha*AH*B+beta*C)