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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_zmtranspose_cpu.cpp, normal z -> d, Thu Oct 8 23:05:52 2020
@author Hartwig Anzt
*/
#include <cstdlib>
#include "magmasparse_internal.h"
/**
* op(from[i], to[i]);
*/
template <typename Operator>
inline magma_int_t
magma_d_mtrans_template(
magma_d_matrix A,
magma_d_matrix *B,
Operator op,
magma_queue_t queue )
{
magma_int_t info = 0;
magma_index_t *linked_list;
magma_index_t *row_ptr;
magma_index_t *last_rowel;
// magma_int_t num_threads;
// magma_int_t el_per_block;
magma_dmfree( B, queue );
B->ownership = MagmaTrue;
B->storage_type = A.storage_type;
B->memory_location = A.memory_location;
B->num_rows = A.num_rows;
B->num_cols = A.num_cols;
B->nnz = A.nnz;
CHECK( magma_index_malloc_cpu( &linked_list, A.nnz ));
CHECK( magma_index_malloc_cpu( &row_ptr, A.num_rows ));
CHECK( magma_index_malloc_cpu( &last_rowel, A.num_rows ));
CHECK( magma_index_malloc_cpu( &B->row, A.num_rows+1 ));
CHECK( magma_index_malloc_cpu( &B->rowidx, A.nnz ));
CHECK( magma_index_malloc_cpu( &B->col, A.nnz ));
CHECK( magma_dmalloc_cpu( &B->val, A.nnz ) );
magma_free_cpu( A.rowidx );
CHECK( magma_dmatrix_addrowindex(&A, queue) );
//#pragma omp parallel
// {
// num_threads = omp_get_max_threads();
// }
//#pragma omp parallel for
for( magma_int_t i=0; i<A.num_rows; i++ ){
row_ptr[i] = -1;
}
//#pragma omp parallel for
for( magma_int_t i=0; i<A.num_rows+1; i++ ){
B->row[i] = 0;
}
//el_per_block = magma_ceildiv( A.num_rows, num_threads );
//#pragma omp parallel
{
// magma_int_t id = omp_get_thread_num();
for(magma_int_t i=0; i<A.nnz; i++ ){
magma_index_t row = A.col[ i ];
//if( (row < (id+1)*el_per_block) && (row >=(id)*el_per_block) ){
{
if( row_ptr[row] == -1 ){
row_ptr[ row ] = i;
linked_list[ i ] = 0;
last_rowel[ row ] = i;
} else {
linked_list[ last_rowel[ row ] ] = i;
linked_list[ i ] = 0;
last_rowel[ row ] = i;
}
B->row[row+1] = B->row[row+1] + 1;
}
}
}
// new rowptr
B->row[0]=0;
magma_dmatrix_createrowptr( B->num_rows, B->row, queue );
assert( B->row[B->num_rows] == A.nnz );
//#pragma omp parallel for
for( magma_int_t row=0; row<A.num_rows; row++){
magma_int_t el = row_ptr[row];
if( el>-1 ) {
for( magma_int_t i=B->row[row]; i<B->row[row+1]; i++ ){
op(A.val[el], B->val[i]);
B->col[i] = A.rowidx[el];
el = linked_list[el];
}
}
}
cleanup:
magma_free_cpu( row_ptr );
magma_free_cpu( last_rowel );
magma_free_cpu( linked_list );
magma_free_cpu( A.rowidx );
return info;
}
inline void cpy(const double &from, double &to) { to = from; }
/**
Purpose
-------
Generates a transpose of A on the CPU.
Arguments
---------
@param[in]
A magma_d_matrix
input matrix (CSR)
@param[out]
B magma_d_matrix*
output matrix (CSR)
@param[in]
queue magma_queue_t
Queue to execute in.
@ingroup magmasparse_daux
********************************************************************/
extern "C" magma_int_t
magma_dmtranspose_cpu(
magma_d_matrix A,
magma_d_matrix *B,
magma_queue_t queue){
magma_int_t info = 0;
CHECK( magma_d_mtrans_template(A, B, cpy, queue) );
cleanup:
return info;
}
//inline function computing the conjugate
inline void conjop(const double &from, double &to) { to = MAGMA_D_CONJ(from); }
/**
Purpose
-------
Generates a transpose conjugate of A on the CPU.
Arguments
---------
@param[in]
A magma_d_matrix
input matrix (CSR)
@param[out]
B magma_d_matrix*
output matrix (CSR)
@param[in]
queue magma_queue_t
Queue to execute in.
@ingroup magmasparse_daux
********************************************************************/
extern "C" magma_int_t
magma_dmtransposeconj_cpu(
magma_d_matrix A,
magma_d_matrix *B,
magma_queue_t queue){
magma_int_t info = 0;
CHECK( magma_d_mtrans_template(A, B, conjop, queue) );
cleanup:
return info;
}
// inline function passing a value
inline void pass(const double &from, double &to) { }
/**
Purpose
-------
Generates a transpose of the nonzero pattern of A on the CPU.
Arguments
---------
@param[in]
A magma_d_matrix
input matrix (CSR)
@param[out]
B magma_d_matrix*
output matrix (CSR)
@param[in]
queue magma_queue_t
Queue to execute in.
@ingroup magmasparse_daux
********************************************************************/
extern "C" magma_int_t
magma_dmtransposestruct_cpu(
magma_d_matrix A,
magma_d_matrix *B,
magma_queue_t queue){
magma_int_t info = 0;
CHECK( magma_d_mtrans_template(A, B, pass, queue) );
cleanup:
return info;
}
// inline function passing absolute value
inline void absval(const double &from, double &to) { to = MAGMA_D_MAKE(MAGMA_D_ABS(from), 0.0 ); }
/**
Purpose
-------
Generates a transpose with absolute values of A on the CPU.
Arguments
---------
@param[in]
A magma_d_matrix
input matrix (CSR)
@param[out]
B magma_d_matrix*
output matrix (CSR)
@param[in]
queue magma_queue_t
Queue to execute in.
@ingroup magmasparse_daux
********************************************************************/
extern "C" magma_int_t
magma_dmtransposeabs_cpu(
magma_d_matrix A,
magma_d_matrix *B,
magma_queue_t queue){
magma_int_t info = 0;
CHECK( magma_d_mtrans_template(A, B, absval, queue) );
cleanup:
return info;
}
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