lapacke_dggevx_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
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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"
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00019   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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00026   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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00028 ******************************************************************************
00029 * Contents: Native middle-level C interface to LAPACK function dggevx
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_dggevx_work( int matrix_order, char balanc, char jobvl,
00038                                 char jobvr, char sense, lapack_int n, double* a,
00039                                 lapack_int lda, double* b, lapack_int ldb,
00040                                 double* alphar, double* alphai, double* beta,
00041                                 double* vl, lapack_int ldvl, double* vr,
00042                                 lapack_int ldvr, lapack_int* ilo,
00043                                 lapack_int* ihi, double* lscale, double* rscale,
00044                                 double* abnrm, double* bbnrm, double* rconde,
00045                                 double* rcondv, double* work, lapack_int lwork,
00046                                 lapack_int* iwork, lapack_logical* bwork )
00047 {
00048     lapack_int info = 0;
00049     if( matrix_order == LAPACK_COL_MAJOR ) {
00050         /* Call LAPACK function and adjust info */
00051         LAPACK_dggevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda, b, &ldb,
00052                        alphar, alphai, beta, vl, &ldvl, vr, &ldvr, ilo, ihi,
00053                        lscale, rscale, abnrm, bbnrm, rconde, rcondv, work,
00054                        &lwork, iwork, bwork, &info );
00055         if( info < 0 ) {
00056             info = info - 1;
00057         }
00058     } else if( matrix_order == LAPACK_ROW_MAJOR ) {
00059         lapack_int lda_t = MAX(1,n);
00060         lapack_int ldb_t = MAX(1,n);
00061         lapack_int ldvl_t = MAX(1,n);
00062         lapack_int ldvr_t = MAX(1,n);
00063         double* a_t = NULL;
00064         double* b_t = NULL;
00065         double* vl_t = NULL;
00066         double* vr_t = NULL;
00067         /* Check leading dimension(s) */
00068         if( lda < n ) {
00069             info = -8;
00070             LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
00071             return info;
00072         }
00073         if( ldb < n ) {
00074             info = -10;
00075             LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
00076             return info;
00077         }
00078         if( ldvl < n ) {
00079             info = -15;
00080             LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
00081             return info;
00082         }
00083         if( ldvr < n ) {
00084             info = -17;
00085             LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
00086             return info;
00087         }
00088         /* Query optimal working array(s) size if requested */
00089         if( lwork == -1 ) {
00090             LAPACK_dggevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda_t, b,
00091                            &ldb_t, alphar, alphai, beta, vl, &ldvl_t, vr,
00092                            &ldvr_t, ilo, ihi, lscale, rscale, abnrm, bbnrm,
00093                            rconde, rcondv, work, &lwork, iwork, bwork, &info );
00094             return (info < 0) ? (info - 1) : info;
00095         }
00096         /* Allocate memory for temporary array(s) */
00097         a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
00098         if( a_t == NULL ) {
00099             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00100             goto exit_level_0;
00101         }
00102         b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,n) );
00103         if( b_t == NULL ) {
00104             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00105             goto exit_level_1;
00106         }
00107         if( LAPACKE_lsame( jobvl, 'v' ) ) {
00108             vl_t = (double*)
00109                 LAPACKE_malloc( sizeof(double) * ldvl_t * MAX(1,n) );
00110             if( vl_t == NULL ) {
00111                 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00112                 goto exit_level_2;
00113             }
00114         }
00115         if( LAPACKE_lsame( jobvr, 'v' ) ) {
00116             vr_t = (double*)
00117                 LAPACKE_malloc( sizeof(double) * ldvr_t * MAX(1,n) );
00118             if( vr_t == NULL ) {
00119                 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00120                 goto exit_level_3;
00121             }
00122         }
00123         /* Transpose input matrices */
00124         LAPACKE_dge_trans( matrix_order, n, n, a, lda, a_t, lda_t );
00125         LAPACKE_dge_trans( matrix_order, n, n, b, ldb, b_t, ldb_t );
00126         /* Call LAPACK function and adjust info */
00127         LAPACK_dggevx( &balanc, &jobvl, &jobvr, &sense, &n, a_t, &lda_t, b_t,
00128                        &ldb_t, alphar, alphai, beta, vl_t, &ldvl_t, vr_t,
00129                        &ldvr_t, ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
00130                        rcondv, work, &lwork, iwork, bwork, &info );
00131         if( info < 0 ) {
00132             info = info - 1;
00133         }
00134         /* Transpose output matrices */
00135         LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
00136         LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
00137         if( LAPACKE_lsame( jobvl, 'v' ) ) {
00138             LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, vl_t, ldvl_t, vl, ldvl );
00139         }
00140         if( LAPACKE_lsame( jobvr, 'v' ) ) {
00141             LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, vr_t, ldvr_t, vr, ldvr );
00142         }
00143         /* Release memory and exit */
00144         if( LAPACKE_lsame( jobvr, 'v' ) ) {
00145             LAPACKE_free( vr_t );
00146         }
00147 exit_level_3:
00148         if( LAPACKE_lsame( jobvl, 'v' ) ) {
00149             LAPACKE_free( vl_t );
00150         }
00151 exit_level_2:
00152         LAPACKE_free( b_t );
00153 exit_level_1:
00154         LAPACKE_free( a_t );
00155 exit_level_0:
00156         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00157             LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
00158         }
00159     } else {
00160         info = -1;
00161         LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
00162     }
00163     return info;
00164 }


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