lapacke_dorgqr_work.c
Go to the documentation of this file.
00001 /*****************************************************************************
00002   Copyright (c) 2010, Intel Corp.
00003   All rights reserved.
00004 
00005   Redistribution and use in source and binary forms, with or without
00006   modification, are permitted provided that the following conditions are met:
00007 
00008     * Redistributions of source code must retain the above copyright notice,
00009       this list of conditions and the following disclaimer.
00010     * Redistributions in binary form must reproduce the above copyright
00011       notice, this list of conditions and the following disclaimer in the
00012       documentation and/or other materials provided with the distribution.
00013     * Neither the name of Intel Corporation nor the names of its contributors
00014       may be used to endorse or promote products derived from this software
00015       without specific prior written permission.
00016 
00017   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00018   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020   ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
00021   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00022   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00023   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00024   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00025   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00026   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
00027   THE POSSIBILITY OF SUCH DAMAGE.
00028 ******************************************************************************
00029 * Contents: Native middle-level C interface to LAPACK function dorgqr
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_dorgqr_work( int matrix_order, lapack_int m, lapack_int n,
00038                                 lapack_int k, double* a, lapack_int lda,
00039                                 const double* tau, double* work,
00040                                 lapack_int lwork )
00041 {
00042     lapack_int info = 0;
00043     if( matrix_order == LAPACK_COL_MAJOR ) {
00044         /* Call LAPACK function and adjust info */
00045         LAPACK_dorgqr( &m, &n, &k, a, &lda, tau, work, &lwork, &info );
00046         if( info < 0 ) {
00047             info = info - 1;
00048         }
00049     } else if( matrix_order == LAPACK_ROW_MAJOR ) {
00050         lapack_int lda_t = MAX(1,m);
00051         double* a_t = NULL;
00052         /* Check leading dimension(s) */
00053         if( lda < n ) {
00054             info = -6;
00055             LAPACKE_xerbla( "LAPACKE_dorgqr_work", info );
00056             return info;
00057         }
00058         /* Query optimal working array(s) size if requested */
00059         if( lwork == -1 ) {
00060             LAPACK_dorgqr( &m, &n, &k, a, &lda_t, tau, work, &lwork, &info );
00061             return (info < 0) ? (info - 1) : info;
00062         }
00063         /* Allocate memory for temporary array(s) */
00064         a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
00065         if( a_t == NULL ) {
00066             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00067             goto exit_level_0;
00068         }
00069         /* Transpose input matrices */
00070         LAPACKE_dge_trans( matrix_order, m, n, a, lda, a_t, lda_t );
00071         /* Call LAPACK function and adjust info */
00072         LAPACK_dorgqr( &m, &n, &k, a_t, &lda_t, tau, work, &lwork, &info );
00073         if( info < 0 ) {
00074             info = info - 1;
00075         }
00076         /* Transpose output matrices */
00077         LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
00078         /* Release memory and exit */
00079         LAPACKE_free( a_t );
00080 exit_level_0:
00081         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00082             LAPACKE_xerbla( "LAPACKE_dorgqr_work", info );
00083         }
00084     } else {
00085         info = -1;
00086         LAPACKE_xerbla( "LAPACKE_dorgqr_work", info );
00087     }
00088     return info;
00089 }


swiftnav
Author(s):
autogenerated on Sat Jun 8 2019 18:55:52