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/*
-- MAGMA (version 2.5.4) --
Univ. of Tennessee, Knoxville
Univ. of California, Berkeley
Univ. of Colorado, Denver
@date October 2020
@generated from sparse/control/magma_zmcsrpass.cpp, normal z -> s, Thu Oct 8 23:05:50 2020
@author Hartwig Anzt
*/
// in this file, many routines are taken from
// the IO functions provided by MatrixMarket
#include "magmasparse_internal.h"
/**
Purpose
-------
Passes a CSR matrix to MAGMA.
Arguments
---------
@param[in]
m magma_int_t
number of rows
@param[in]
n magma_int_t
number of columns
@param[in]
row magma_index_t*
row pointer
@param[in]
col magma_index_t*
column indices
@param[in]
val float*
array containing matrix entries
@param[out]
A magma_s_matrix*
matrix in magma sparse matrix format
@param[in]
queue magma_queue_t
Queue to execute in.
@ingroup magmasparse_saux
********************************************************************/
extern "C"
magma_int_t
magma_scsrset(
magma_int_t m,
magma_int_t n,
magma_index_t *row,
magma_index_t *col,
float *val,
magma_s_matrix *A,
magma_queue_t queue )
{
// make sure the target structure is empty
magma_smfree( A, queue );
A->num_rows = m;
A->num_cols = n;
A->nnz = row[m];
A->true_nnz = row[m];
A->storage_type = Magma_CSR;
A->memory_location = Magma_CPU;
A->val = val;
A->col = col;
A->row = row;
A->fill_mode = MagmaFull;
A->ownership = MagmaFalse;
return MAGMA_SUCCESS;
}
/**
Purpose
-------
Passes a MAGMA matrix to CSR structure.
Arguments
---------
@param[in]
A magma_s_matrix
magma sparse matrix in CSR format
@param[out]
m magma_int_t
number of rows
@param[out]
n magma_int_t
number of columns
@param[out]
row magma_index_t*
row pointer
@param[out]
col magma_index_t*
column indices
@param[out]
val float*
array containing matrix entries
@param[in]
queue magma_queue_t
Queue to execute in.
@ingroup magmasparse_saux
********************************************************************/
extern "C"
magma_int_t
magma_scsrget(
magma_s_matrix A,
magma_int_t *m,
magma_int_t *n,
magma_index_t **row,
magma_index_t **col,
float **val,
magma_queue_t queue )
{
magma_int_t info = 0;
magma_s_matrix A_CPU={Magma_CSR}, A_CSR={Magma_CSR};
if ( A.memory_location == Magma_CPU && A.storage_type == Magma_CSR ) {
*m = A.num_rows;
*n = A.num_cols;
*val = A.val;
*col = A.col;
*row = A.row;
A.ownership = MagmaFalse;
} else {
CHECK( magma_smtransfer( A, &A_CPU, A.memory_location, Magma_CPU, queue ));
CHECK( magma_smconvert( A_CPU, &A_CSR, A_CPU.storage_type, Magma_CSR, queue ));
CHECK( magma_scsrget( A_CSR, m, n, row, col, val, queue ));
}
cleanup:
magma_smfree( &A_CSR, queue );
magma_smfree( &A_CPU, queue );
return info;
}
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