Creates a handle for a CSR-format matrix.

Syntax

stat = mkl_sparse_s_create_csr (A, indexing, rows, cols, rows_start, rows_end, col_indx, values)

stat = mkl_sparse_d_create_csr (A, indexing, rows, cols, rows_start, rows_end, col_indx, values)

stat = mkl_sparse_c_create_csr (A, indexing, rows, cols, rows_start, rows_end, col_indx, values)

stat = mkl_sparse_z_create_csr (A, indexing, rows, cols, rows_start, rows_end, col_indx, values)

Include Files

  • mkl_spblas.f90

Description

The mkl_sparse_?_create_csr routine creates a handle for an m-by-k matrix A in CSR format.

Note

The input arrays provided are left unchanged except for the call to mkl_sparse_order, which performs ordering of column indexes of the matrix. To avoid any changes to the input data, use mkl_sparse_copy.

Input Parameters

indexing

sparse_index_base_t.

Indicates how input arrays are indexed.

SPARSE_INDEX_BASE_ZERO

Zero-based (C-style) indexing: indices start at 0.

SPARSE_INDEX_BASE_ONE

One-based (Fortran-style) indexing: indices start at 1.

rows

C_INT.

Number of rows of matrix A.

cols

C_INT.

Number of columns of matrix A.

rows_start

C_INT.

Array of length at least m. This array contains row indices, such that rows_start(i) - indexing is the first index of row i in the arrays values and col_indx. The value of indexing is 0 for zero-based indexing and 1 for one-based indexing.

Refer to pointerB array description in CSR Format for more details.

rows_end

C_INT.

Array of at least length m. This array contains row indices, such that rows_end(i) - indexing - 1 is the last index of row i in the arrays values and col_indx. The value of indexing is 0 for zero-based indexing and 1 for one-based indexing.

Refer to pointerE array description in CSR Format for more details.

col_indx

C_INT .

For one-based indexing, array containing the column indices plus one for each non-zero element of the matrix A. For zero-based indexing, array containing the column indices for each non-zero element of the matrix A. Its length is at least rows_end(rows - 1) - indexing.

The value of indexing is 0 for zero-based indexing and 1 for one-based indexing.

values

C_FLOAT for mkl_sparse_s_create_csr

C_DOUBLE for mkl_sparse_d_create_csr

C_FLOAT_COMPLEX for mkl_sparse_c_create_csr

C_DOUBLE_COMPLEX for mkl_sparse_z_create_csr

Array containing non-zero elements of the matrix A. Its length is equal to length of the col_indx array.

Refer to values array description in CSR Format for more details.

Output Parameters

A

SPARSE_MATRIX_T.

Handle containing internal data for subsequent Inspector-executor Sparse BLAS operations.

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.

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