Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

ID 766686
Date 7/13/2023
Public

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mkl_sparse_?_add

Computes the sum of two sparse matrices. The result is stored in a newly allocated sparse matrix.

Syntax

stat = mkl_sparse_s_add (operation, A, alpha, B, C)

stat = mkl_sparse_d_add (operation, A, alpha, B, C)

stat = mkl_sparse_c_add (operation, A, alpha, B, C)

stat = mkl_sparse_z_add (operation, A, alpha, B, C)

Include Files

  • mkl_spblas.f90

Description

The mkl_sparse_?_add routine performs a matrix-matrix operation:

C := alpha*op(A) + B

where alpha is a scalar, op is a matrix modifier, and A, B, and C are sparse matrices.

NOTE:

This routine is only supported for sparse matrices in CSR and BSR formats. It is not supported for COO or CSC formats.

Input Parameters

A

SPARSE_MATRIX_T.

Handle which contains the sparse matrix A.

alpha

C_FLOAT for mkl_sparse_s_add

C_DOUBLE for mkl_sparse_d_add

C_FLOAT_COMPLEX for mkl_sparse_c_add

C_DOUBLE_COMPLEX for mkl_sparse_z_add

Specifies the scalar alpha.

operation

C_INT.

Specifies operation op() on input matrix.

SPARSE_OPERATION_NON_TRANSPOSE

Non-transpose, op(A) = A.

SPARSE_OPERATION_TRANSPOSE

Transpose, op(A) = AT.

SPARSE_OPERATION_CONJUGATE_TRANSPOSE

Conjugate transpose, op(A) = AH.

B

SPARSE_MATRIX_T.

Handle which contains the sparse matrix B.

Output Parameters

C

SPARSE_MATRIX_T.

Handle which contains the resulting sparse matrix.

stat

INTEGER

Value indicating whether the operation was successful or not, and why:

SPARSE_STATUS_SUCCESS

The operation was successful.

SPARSE_STATUS_NOT_INITIALIZED

The routine encountered an empty handle or matrix array.

SPARSE_STATUS_ALLOC_FAILED

Internal memory allocation failed.

SPARSE_STATUS_INVALID_VALUE

The input parameters contain an invalid value.

SPARSE_STATUS_EXECUTION_FAILED

Execution failed.

SPARSE_STATUS_INTERNAL_ERROR

An error in algorithm implementation occurred.

SPARSE_STATUS_NOT_SUPPORTED

The requested operation is not supported.