lapacke_cggev_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
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 cggev
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_cggev_work( int matrix_order, char jobvl, char jobvr,
00038                                lapack_int n, lapack_complex_float* a,
00039                                lapack_int lda, lapack_complex_float* b,
00040                                lapack_int ldb, lapack_complex_float* alpha,
00041                                lapack_complex_float* beta,
00042                                lapack_complex_float* vl, lapack_int ldvl,
00043                                lapack_complex_float* vr, lapack_int ldvr,
00044                                lapack_complex_float* work, lapack_int lwork,
00045                                float* rwork )
00046 {
00047     lapack_int info = 0;
00048     if( matrix_order == LAPACK_COL_MAJOR ) {
00049         /* Call LAPACK function and adjust info */
00050         LAPACK_cggev( &jobvl, &jobvr, &n, a, &lda, b, &ldb, alpha, beta, vl,
00051                       &ldvl, vr, &ldvr, work, &lwork, rwork, &info );
00052         if( info < 0 ) {
00053             info = info - 1;
00054         }
00055     } else if( matrix_order == LAPACK_ROW_MAJOR ) {
00056         lapack_int nrows_vl = LAPACKE_lsame( jobvl, 'v' ) ? n : 1;
00057         lapack_int ncols_vl = LAPACKE_lsame( jobvl, 'v' ) ? n : 1;
00058         lapack_int nrows_vr = LAPACKE_lsame( jobvr, 'v' ) ? n : 1;
00059         lapack_int ncols_vr = LAPACKE_lsame( jobvr, 'v' ) ? n : 1;
00060         lapack_int lda_t = MAX(1,n);
00061         lapack_int ldb_t = MAX(1,n);
00062         lapack_int ldvl_t = MAX(1,nrows_vl);
00063         lapack_int ldvr_t = MAX(1,nrows_vr);
00064         lapack_complex_float* a_t = NULL;
00065         lapack_complex_float* b_t = NULL;
00066         lapack_complex_float* vl_t = NULL;
00067         lapack_complex_float* vr_t = NULL;
00068         /* Check leading dimension(s) */
00069         if( lda < n ) {
00070             info = -6;
00071             LAPACKE_xerbla( "LAPACKE_cggev_work", info );
00072             return info;
00073         }
00074         if( ldb < n ) {
00075             info = -8;
00076             LAPACKE_xerbla( "LAPACKE_cggev_work", info );
00077             return info;
00078         }
00079         if( ldvl < ncols_vl ) {
00080             info = -12;
00081             LAPACKE_xerbla( "LAPACKE_cggev_work", info );
00082             return info;
00083         }
00084         if( ldvr < ncols_vr ) {
00085             info = -14;
00086             LAPACKE_xerbla( "LAPACKE_cggev_work", info );
00087             return info;
00088         }
00089         /* Query optimal working array(s) size if requested */
00090         if( lwork == -1 ) {
00091             LAPACK_cggev( &jobvl, &jobvr, &n, a, &lda_t, b, &ldb_t, alpha, beta,
00092                           vl, &ldvl_t, vr, &ldvr_t, work, &lwork, rwork,
00093                           &info );
00094             return (info < 0) ? (info - 1) : info;
00095         }
00096         /* Allocate memory for temporary array(s) */
00097         a_t = (lapack_complex_float*)
00098             LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,n) );
00099         if( a_t == NULL ) {
00100             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00101             goto exit_level_0;
00102         }
00103         b_t = (lapack_complex_float*)
00104             LAPACKE_malloc( sizeof(lapack_complex_float) * ldb_t * MAX(1,n) );
00105         if( b_t == NULL ) {
00106             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00107             goto exit_level_1;
00108         }
00109         if( LAPACKE_lsame( jobvl, 'v' ) ) {
00110             vl_t = (lapack_complex_float*)
00111                 LAPACKE_malloc( sizeof(lapack_complex_float) *
00112                                 ldvl_t * MAX(1,ncols_vl) );
00113             if( vl_t == NULL ) {
00114                 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00115                 goto exit_level_2;
00116             }
00117         }
00118         if( LAPACKE_lsame( jobvr, 'v' ) ) {
00119             vr_t = (lapack_complex_float*)
00120                 LAPACKE_malloc( sizeof(lapack_complex_float) *
00121                                 ldvr_t * MAX(1,ncols_vr) );
00122             if( vr_t == NULL ) {
00123                 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00124                 goto exit_level_3;
00125             }
00126         }
00127         /* Transpose input matrices */
00128         LAPACKE_cge_trans( matrix_order, n, n, a, lda, a_t, lda_t );
00129         LAPACKE_cge_trans( matrix_order, n, n, b, ldb, b_t, ldb_t );
00130         /* Call LAPACK function and adjust info */
00131         LAPACK_cggev( &jobvl, &jobvr, &n, a_t, &lda_t, b_t, &ldb_t, alpha, beta,
00132                       vl_t, &ldvl_t, vr_t, &ldvr_t, work, &lwork, rwork,
00133                       &info );
00134         if( info < 0 ) {
00135             info = info - 1;
00136         }
00137         /* Transpose output matrices */
00138         LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
00139         LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
00140         if( LAPACKE_lsame( jobvl, 'v' ) ) {
00141             LAPACKE_cge_trans( LAPACK_COL_MAJOR, nrows_vl, ncols_vl, vl_t,
00142                                ldvl_t, vl, ldvl );
00143         }
00144         if( LAPACKE_lsame( jobvr, 'v' ) ) {
00145             LAPACKE_cge_trans( LAPACK_COL_MAJOR, nrows_vr, ncols_vr, vr_t,
00146                                ldvr_t, vr, ldvr );
00147         }
00148         /* Release memory and exit */
00149         if( LAPACKE_lsame( jobvr, 'v' ) ) {
00150             LAPACKE_free( vr_t );
00151         }
00152 exit_level_3:
00153         if( LAPACKE_lsame( jobvl, 'v' ) ) {
00154             LAPACKE_free( vl_t );
00155         }
00156 exit_level_2:
00157         LAPACKE_free( b_t );
00158 exit_level_1:
00159         LAPACKE_free( a_t );
00160 exit_level_0:
00161         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00162             LAPACKE_xerbla( "LAPACKE_cggev_work", info );
00163         }
00164     } else {
00165         info = -1;
00166         LAPACKE_xerbla( "LAPACKE_cggev_work", info );
00167     }
00168     return info;
00169 }


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