151 lines
6.2 KiB
C
151 lines
6.2 KiB
C
/*****************************************************************************
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Copyright (c) 2011, 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 dgghrd
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* Author: Intel Corporation
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* Generated November, 2011
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*****************************************************************************/
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#include "lapacke_utils.h"
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lapack_int LAPACKE_dgghrd_work( int matrix_order, char compq, char compz,
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lapack_int n, lapack_int ilo, lapack_int ihi,
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double* a, lapack_int lda, double* b,
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lapack_int ldb, double* q, lapack_int ldq,
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double* z, lapack_int ldz )
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{
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lapack_int info = 0;
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if( matrix_order == LAPACK_COL_MAJOR ) {
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/* Call LAPACK function and adjust info */
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LAPACK_dgghrd( &compq, &compz, &n, &ilo, &ihi, a, &lda, b, &ldb, q,
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&ldq, z, &ldz, &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_order == LAPACK_ROW_MAJOR ) {
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lapack_int lda_t = MAX(1,n);
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lapack_int ldb_t = MAX(1,n);
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lapack_int ldq_t = MAX(1,n);
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lapack_int ldz_t = MAX(1,n);
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double* a_t = NULL;
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double* b_t = NULL;
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double* q_t = NULL;
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double* z_t = NULL;
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/* Check leading dimension(s) */
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if( lda < n ) {
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info = -8;
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LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
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return info;
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}
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if( ldb < n ) {
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info = -10;
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LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
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return info;
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}
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if( ldq < n ) {
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info = -12;
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LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
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return info;
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}
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if( ldz < n ) {
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info = -14;
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LAPACKE_xerbla( "LAPACKE_dgghrd_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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b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,n) );
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if( b_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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if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
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q_t = (double*)LAPACKE_malloc( sizeof(double) * ldq_t * MAX(1,n) );
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if( q_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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}
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if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
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z_t = (double*)LAPACKE_malloc( sizeof(double) * ldz_t * MAX(1,n) );
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if( z_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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}
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/* Transpose input matrices */
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LAPACKE_dge_trans( matrix_order, n, n, a, lda, a_t, lda_t );
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LAPACKE_dge_trans( matrix_order, n, n, b, ldb, b_t, ldb_t );
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if( LAPACKE_lsame( compq, 'v' ) ) {
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LAPACKE_dge_trans( matrix_order, n, n, q, ldq, q_t, ldq_t );
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}
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if( LAPACKE_lsame( compz, 'v' ) ) {
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LAPACKE_dge_trans( matrix_order, n, n, z, ldz, z_t, ldz_t );
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}
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/* Call LAPACK function and adjust info */
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LAPACK_dgghrd( &compq, &compz, &n, &ilo, &ihi, a_t, &lda_t, b_t, &ldb_t,
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q_t, &ldq_t, z_t, &ldz_t, &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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LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
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LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
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if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
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LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
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}
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if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
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LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
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}
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/* Release memory and exit */
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if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
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LAPACKE_free( z_t );
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}
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exit_level_3:
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if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
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LAPACKE_free( q_t );
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}
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exit_level_2:
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LAPACKE_free( b_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_dgghrd_work", info );
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}
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} else {
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info = -1;
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LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
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}
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return info;
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}
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