175 lines
7.7 KiB
C
175 lines
7.7 KiB
C
/*****************************************************************************
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Copyright (c) 2014, Intel Corp.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************
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* Contents: Native middle-level C interface to LAPACK function dgesvxx
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* Author: Intel Corporation
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*****************************************************************************/
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#include "lapacke_utils.h"
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lapack_int LAPACKE_dgesvxx_work( int matrix_layout, char fact, char trans,
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lapack_int n, lapack_int nrhs, double* a,
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lapack_int lda, double* af, lapack_int ldaf,
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lapack_int* ipiv, char* equed, double* r,
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double* c, double* b, lapack_int ldb,
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double* x, lapack_int ldx, double* rcond,
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double* rpvgrw, double* berr,
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lapack_int n_err_bnds, double* err_bnds_norm,
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double* err_bnds_comp, lapack_int nparams,
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double* params, double* work,
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lapack_int* iwork )
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{
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lapack_int info = 0;
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if( matrix_layout == LAPACK_COL_MAJOR ) {
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/* Call LAPACK function and adjust info */
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LAPACK_dgesvxx( &fact, &trans, &n, &nrhs, a, &lda, af, &ldaf, ipiv,
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equed, r, c, b, &ldb, x, &ldx, rcond, rpvgrw, berr,
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&n_err_bnds, err_bnds_norm, err_bnds_comp, &nparams,
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params, work, iwork, &info );
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if( info < 0 ) {
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info = info - 1;
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}
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} else if( matrix_layout == LAPACK_ROW_MAJOR ) {
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lapack_int lda_t = MAX(1,n);
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lapack_int ldaf_t = MAX(1,n);
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lapack_int ldb_t = MAX(1,n);
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lapack_int ldx_t = MAX(1,n);
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double* a_t = NULL;
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double* af_t = NULL;
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double* b_t = NULL;
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double* x_t = NULL;
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double* err_bnds_norm_t = NULL;
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double* err_bnds_comp_t = NULL;
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/* Check leading dimension(s) */
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if( lda < n ) {
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info = -7;
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LAPACKE_xerbla( "LAPACKE_dgesvxx_work", info );
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return info;
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}
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if( ldaf < n ) {
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info = -9;
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LAPACKE_xerbla( "LAPACKE_dgesvxx_work", info );
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return info;
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}
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if( ldb < nrhs ) {
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info = -15;
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LAPACKE_xerbla( "LAPACKE_dgesvxx_work", info );
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return info;
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}
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if( ldx < nrhs ) {
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info = -17;
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LAPACKE_xerbla( "LAPACKE_dgesvxx_work", info );
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return info;
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}
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/* Allocate memory for temporary array(s) */
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a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
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if( a_t == NULL ) {
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info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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goto exit_level_0;
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}
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af_t = (double*)LAPACKE_malloc( sizeof(double) * ldaf_t * MAX(1,n) );
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if( af_t == NULL ) {
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info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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goto exit_level_1;
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}
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b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,nrhs) );
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if( b_t == NULL ) {
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info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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goto exit_level_2;
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}
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x_t = (double*)LAPACKE_malloc( sizeof(double) * ldx_t * MAX(1,nrhs) );
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if( x_t == NULL ) {
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info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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goto exit_level_3;
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}
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err_bnds_norm_t = (double*)
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LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
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if( err_bnds_norm_t == NULL ) {
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info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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goto exit_level_4;
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}
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err_bnds_comp_t = (double*)
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LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
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if( err_bnds_comp_t == NULL ) {
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info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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goto exit_level_5;
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}
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/* Transpose input matrices */
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LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
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if( LAPACKE_lsame( fact, 'f' ) ) {
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LAPACKE_dge_trans( matrix_layout, n, n, af, ldaf, af_t, ldaf_t );
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}
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LAPACKE_dge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
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/* Call LAPACK function and adjust info */
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LAPACK_dgesvxx( &fact, &trans, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t,
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ipiv, equed, r, c, b_t, &ldb_t, x_t, &ldx_t, rcond,
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rpvgrw, berr, &n_err_bnds, err_bnds_norm_t,
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err_bnds_comp_t, &nparams, params, work, iwork, &info );
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if( info < 0 ) {
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info = info - 1;
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}
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/* Transpose output matrices */
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if( LAPACKE_lsame( fact, 'e' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
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LAPACKE_lsame( *equed, 'c' ) || LAPACKE_lsame( *equed, 'r' ) ) ) {
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LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
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}
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if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
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LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, af_t, ldaf_t, af, ldaf );
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}
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if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
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LAPACKE_lsame( *equed, 'c' ) || LAPACKE_lsame( *equed, 'r' ) ) ) {
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LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
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}
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LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
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LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_norm_t,
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nrhs, err_bnds_norm, n_err_bnds );
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LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_comp_t,
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nrhs, err_bnds_comp, n_err_bnds );
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/* Release memory and exit */
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LAPACKE_free( err_bnds_comp_t );
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exit_level_5:
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LAPACKE_free( err_bnds_norm_t );
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exit_level_4:
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LAPACKE_free( x_t );
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exit_level_3:
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LAPACKE_free( b_t );
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exit_level_2:
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LAPACKE_free( af_t );
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exit_level_1:
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LAPACKE_free( a_t );
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exit_level_0:
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if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
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LAPACKE_xerbla( "LAPACKE_dgesvxx_work", info );
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}
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} else {
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info = -1;
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LAPACKE_xerbla( "LAPACKE_dgesvxx_work", info );
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}
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return info;
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}
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