lapacke_dbdsdc_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 dbdsdc
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_dbdsdc_work( int matrix_order, char uplo, char compq,
00038                                 lapack_int n, double* d, double* e, double* u,
00039                                 lapack_int ldu, double* vt, lapack_int ldvt,
00040                                 double* q, lapack_int* iq, double* work,
00041                                 lapack_int* iwork )
00042 {
00043     lapack_int info = 0;
00044     if( matrix_order == LAPACK_COL_MAJOR ) {
00045         /* Call LAPACK function and adjust info */
00046         LAPACK_dbdsdc( &uplo, &compq, &n, d, e, u, &ldu, vt, &ldvt, q, iq, work,
00047                        iwork, &info );
00048         if( info < 0 ) {
00049             info = info - 1;
00050         }
00051     } else if( matrix_order == LAPACK_ROW_MAJOR ) {
00052         lapack_int ldu_t = MAX(1,n);
00053         lapack_int ldvt_t = MAX(1,n);
00054         double* u_t = NULL;
00055         double* vt_t = NULL;
00056         /* Check leading dimension(s) */
00057         if( ldu < n ) {
00058             info = -8;
00059             LAPACKE_xerbla( "LAPACKE_dbdsdc_work", info );
00060             return info;
00061         }
00062         if( ldvt < n ) {
00063             info = -10;
00064             LAPACKE_xerbla( "LAPACKE_dbdsdc_work", info );
00065             return info;
00066         }
00067         /* Allocate memory for temporary array(s) */
00068         if( LAPACKE_lsame( compq, 'i' ) ) {
00069             u_t = (double*)LAPACKE_malloc( sizeof(double) * ldu_t * MAX(1,n) );
00070             if( u_t == NULL ) {
00071                 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00072                 goto exit_level_0;
00073             }
00074         }
00075         if( LAPACKE_lsame( compq, 'i' ) ) {
00076             vt_t = (double*)
00077                 LAPACKE_malloc( sizeof(double) * ldvt_t * MAX(1,n) );
00078             if( vt_t == NULL ) {
00079                 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00080                 goto exit_level_1;
00081             }
00082         }
00083         /* Call LAPACK function and adjust info */
00084         LAPACK_dbdsdc( &uplo, &compq, &n, d, e, u_t, &ldu_t, vt_t, &ldvt_t, q,
00085                        iq, work, iwork, &info );
00086         if( info < 0 ) {
00087             info = info - 1;
00088         }
00089         /* Transpose output matrices */
00090         if( LAPACKE_lsame( compq, 'i' ) ) {
00091             LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, u_t, ldu_t, u, ldu );
00092         }
00093         if( LAPACKE_lsame( compq, 'i' ) ) {
00094             LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, vt_t, ldvt_t, vt, ldvt );
00095         }
00096         /* Release memory and exit */
00097         if( LAPACKE_lsame( compq, 'i' ) ) {
00098             LAPACKE_free( vt_t );
00099         }
00100 exit_level_1:
00101         if( LAPACKE_lsame( compq, 'i' ) ) {
00102             LAPACKE_free( u_t );
00103         }
00104 exit_level_0:
00105         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00106             LAPACKE_xerbla( "LAPACKE_dbdsdc_work", info );
00107         }
00108     } else {
00109         info = -1;
00110         LAPACKE_xerbla( "LAPACKE_dbdsdc_work", info );
00111     }
00112     return info;
00113 }


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