lapacke_dormrq_work.c
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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
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00023   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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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 dormrq
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_dormrq_work( int matrix_order, char side, char trans,
00038                                 lapack_int m, lapack_int n, lapack_int k,
00039                                 const double* a, lapack_int lda,
00040                                 const double* tau, double* c, lapack_int ldc,
00041                                 double* work, lapack_int lwork )
00042 {
00043     lapack_int info = 0;
00044     if( matrix_order == LAPACK_COL_MAJOR ) {
00045         /* Call LAPACK function and adjust info */
00046         LAPACK_dormrq( &side, &trans, &m, &n, &k, a, &lda, tau, c, &ldc, work,
00047                        &lwork, &info );
00048         if( info < 0 ) {
00049             info = info - 1;
00050         }
00051     } else if( matrix_order == LAPACK_ROW_MAJOR ) {
00052         lapack_int lda_t = MAX(1,k);
00053         lapack_int ldc_t = MAX(1,m);
00054         double* a_t = NULL;
00055         double* c_t = NULL;
00056         /* Check leading dimension(s) */
00057         if( lda < m ) {
00058             info = -8;
00059             LAPACKE_xerbla( "LAPACKE_dormrq_work", info );
00060             return info;
00061         }
00062         if( ldc < n ) {
00063             info = -11;
00064             LAPACKE_xerbla( "LAPACKE_dormrq_work", info );
00065             return info;
00066         }
00067         /* Query optimal working array(s) size if requested */
00068         if( lwork == -1 ) {
00069             LAPACK_dormrq( &side, &trans, &m, &n, &k, a, &lda_t, tau, c, &ldc_t,
00070                            work, &lwork, &info );
00071             return (info < 0) ? (info - 1) : info;
00072         }
00073         /* Allocate memory for temporary array(s) */
00074         a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,m) );
00075         if( a_t == NULL ) {
00076             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00077             goto exit_level_0;
00078         }
00079         c_t = (double*)LAPACKE_malloc( sizeof(double) * ldc_t * MAX(1,n) );
00080         if( c_t == NULL ) {
00081             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00082             goto exit_level_1;
00083         }
00084         /* Transpose input matrices */
00085         LAPACKE_dge_trans( matrix_order, k, m, a, lda, a_t, lda_t );
00086         LAPACKE_dge_trans( matrix_order, m, n, c, ldc, c_t, ldc_t );
00087         /* Call LAPACK function and adjust info */
00088         LAPACK_dormrq( &side, &trans, &m, &n, &k, a_t, &lda_t, tau, c_t, &ldc_t,
00089                        work, &lwork, &info );
00090         if( info < 0 ) {
00091             info = info - 1;
00092         }
00093         /* Transpose output matrices */
00094         LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
00095         /* Release memory and exit */
00096         LAPACKE_free( c_t );
00097 exit_level_1:
00098         LAPACKE_free( a_t );
00099 exit_level_0:
00100         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00101             LAPACKE_xerbla( "LAPACKE_dormrq_work", info );
00102         }
00103     } else {
00104         info = -1;
00105         LAPACKE_xerbla( "LAPACKE_dormrq_work", info );
00106     }
00107     return info;
00108 }


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