lapacke_cgeev_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
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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 cgeev
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_cgeev_work( int matrix_order, char jobvl, char jobvr,
00038                                lapack_int n, lapack_complex_float* a,
00039                                lapack_int lda, lapack_complex_float* w,
00040                                lapack_complex_float* vl, lapack_int ldvl,
00041                                lapack_complex_float* vr, lapack_int ldvr,
00042                                lapack_complex_float* work, lapack_int lwork,
00043                                float* rwork )
00044 {
00045     lapack_int info = 0;
00046     if( matrix_order == LAPACK_COL_MAJOR ) {
00047         /* Call LAPACK function and adjust info */
00048         LAPACK_cgeev( &jobvl, &jobvr, &n, a, &lda, w, vl, &ldvl, vr, &ldvr,
00049                       work, &lwork, rwork, &info );
00050         if( info < 0 ) {
00051             info = info - 1;
00052         }
00053     } else if( matrix_order == LAPACK_ROW_MAJOR ) {
00054         lapack_int lda_t = MAX(1,n);
00055         lapack_int ldvl_t = MAX(1,n);
00056         lapack_int ldvr_t = MAX(1,n);
00057         lapack_complex_float* a_t = NULL;
00058         lapack_complex_float* vl_t = NULL;
00059         lapack_complex_float* vr_t = NULL;
00060         /* Check leading dimension(s) */
00061         if( lda < n ) {
00062             info = -6;
00063             LAPACKE_xerbla( "LAPACKE_cgeev_work", info );
00064             return info;
00065         }
00066         if( ldvl < n ) {
00067             info = -9;
00068             LAPACKE_xerbla( "LAPACKE_cgeev_work", info );
00069             return info;
00070         }
00071         if( ldvr < n ) {
00072             info = -11;
00073             LAPACKE_xerbla( "LAPACKE_cgeev_work", info );
00074             return info;
00075         }
00076         /* Query optimal working array(s) size if requested */
00077         if( lwork == -1 ) {
00078             LAPACK_cgeev( &jobvl, &jobvr, &n, a, &lda_t, w, vl, &ldvl_t, vr,
00079                           &ldvr_t, work, &lwork, rwork, &info );
00080             return (info < 0) ? (info - 1) : info;
00081         }
00082         /* Allocate memory for temporary array(s) */
00083         a_t = (lapack_complex_float*)
00084             LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,n) );
00085         if( a_t == NULL ) {
00086             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00087             goto exit_level_0;
00088         }
00089         if( LAPACKE_lsame( jobvl, 'v' ) ) {
00090             vl_t = (lapack_complex_float*)
00091                 LAPACKE_malloc( sizeof(lapack_complex_float) *
00092                                 ldvl_t * MAX(1,n) );
00093             if( vl_t == NULL ) {
00094                 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00095                 goto exit_level_1;
00096             }
00097         }
00098         if( LAPACKE_lsame( jobvr, 'v' ) ) {
00099             vr_t = (lapack_complex_float*)
00100                 LAPACKE_malloc( sizeof(lapack_complex_float) *
00101                                 ldvr_t * MAX(1,n) );
00102             if( vr_t == NULL ) {
00103                 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00104                 goto exit_level_2;
00105             }
00106         }
00107         /* Transpose input matrices */
00108         LAPACKE_cge_trans( matrix_order, n, n, a, lda, a_t, lda_t );
00109         /* Call LAPACK function and adjust info */
00110         LAPACK_cgeev( &jobvl, &jobvr, &n, a_t, &lda_t, w, vl_t, &ldvl_t, vr_t,
00111                       &ldvr_t, work, &lwork, rwork, &info );
00112         if( info < 0 ) {
00113             info = info - 1;
00114         }
00115         /* Transpose output matrices */
00116         LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
00117         if( LAPACKE_lsame( jobvl, 'v' ) ) {
00118             LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, vl_t, ldvl_t, vl, ldvl );
00119         }
00120         if( LAPACKE_lsame( jobvr, 'v' ) ) {
00121             LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, vr_t, ldvr_t, vr, ldvr );
00122         }
00123         /* Release memory and exit */
00124         if( LAPACKE_lsame( jobvr, 'v' ) ) {
00125             LAPACKE_free( vr_t );
00126         }
00127 exit_level_2:
00128         if( LAPACKE_lsame( jobvl, 'v' ) ) {
00129             LAPACKE_free( vl_t );
00130         }
00131 exit_level_1:
00132         LAPACKE_free( a_t );
00133 exit_level_0:
00134         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00135             LAPACKE_xerbla( "LAPACKE_cgeev_work", info );
00136         }
00137     } else {
00138         info = -1;
00139         LAPACKE_xerbla( "LAPACKE_cgeev_work", info );
00140     }
00141     return info;
00142 }


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