lapacke_chbgvd.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 high-level C interface to LAPACK function chbgvd
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_chbgvd( int matrix_order, char jobz, char uplo, lapack_int n,
00038                            lapack_int ka, lapack_int kb,
00039                            lapack_complex_float* ab, lapack_int ldab,
00040                            lapack_complex_float* bb, lapack_int ldbb, float* w,
00041                            lapack_complex_float* z, lapack_int ldz )
00042 {
00043     lapack_int info = 0;
00044     lapack_int liwork = -1;
00045     lapack_int lrwork = -1;
00046     lapack_int lwork = -1;
00047     lapack_int* iwork = NULL;
00048     float* rwork = NULL;
00049     lapack_complex_float* work = NULL;
00050     lapack_int iwork_query;
00051     float rwork_query;
00052     lapack_complex_float work_query;
00053     if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
00054         LAPACKE_xerbla( "LAPACKE_chbgvd", -1 );
00055         return -1;
00056     }
00057 #ifndef LAPACK_DISABLE_NAN_CHECK
00058     /* Optionally check input matrices for NaNs */
00059     if( LAPACKE_chb_nancheck( matrix_order, uplo, n, ka, ab, ldab ) ) {
00060         return -7;
00061     }
00062     if( LAPACKE_chb_nancheck( matrix_order, uplo, n, kb, bb, ldbb ) ) {
00063         return -9;
00064     }
00065 #endif
00066     /* Query optimal working array(s) size */
00067     info = LAPACKE_chbgvd_work( matrix_order, jobz, uplo, n, ka, kb, ab, ldab,
00068                                 bb, ldbb, w, z, ldz, &work_query, lwork,
00069                                 &rwork_query, lrwork, &iwork_query, liwork );
00070     if( info != 0 ) {
00071         goto exit_level_0;
00072     }
00073     liwork = (lapack_int)iwork_query;
00074     lrwork = (lapack_int)rwork_query;
00075     lwork = LAPACK_C2INT( work_query );
00076     /* Allocate memory for work arrays */
00077     iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
00078     if( iwork == NULL ) {
00079         info = LAPACK_WORK_MEMORY_ERROR;
00080         goto exit_level_0;
00081     }
00082     rwork = (float*)LAPACKE_malloc( sizeof(float) * lrwork );
00083     if( rwork == NULL ) {
00084         info = LAPACK_WORK_MEMORY_ERROR;
00085         goto exit_level_1;
00086     }
00087     work = (lapack_complex_float*)
00088         LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
00089     if( work == NULL ) {
00090         info = LAPACK_WORK_MEMORY_ERROR;
00091         goto exit_level_2;
00092     }
00093     /* Call middle-level interface */
00094     info = LAPACKE_chbgvd_work( matrix_order, jobz, uplo, n, ka, kb, ab, ldab,
00095                                 bb, ldbb, w, z, ldz, work, lwork, rwork, lrwork,
00096                                 iwork, liwork );
00097     /* Release memory and exit */
00098     LAPACKE_free( work );
00099 exit_level_2:
00100     LAPACKE_free( rwork );
00101 exit_level_1:
00102     LAPACKE_free( iwork );
00103 exit_level_0:
00104     if( info == LAPACK_WORK_MEMORY_ERROR ) {
00105         LAPACKE_xerbla( "LAPACKE_chbgvd", info );
00106     }
00107     return info;
00108 }


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