lapacke_ssygvd.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 high-level C interface to LAPACK function ssygvd
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_ssygvd( int matrix_order, lapack_int itype, char jobz,
00038                            char uplo, lapack_int n, float* a, lapack_int lda,
00039                            float* b, lapack_int ldb, float* w )
00040 {
00041     lapack_int info = 0;
00042     lapack_int liwork = -1;
00043     lapack_int lwork = -1;
00044     lapack_int* iwork = NULL;
00045     float* work = NULL;
00046     lapack_int iwork_query;
00047     float work_query;
00048     if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
00049         LAPACKE_xerbla( "LAPACKE_ssygvd", -1 );
00050         return -1;
00051     }
00052 #ifndef LAPACK_DISABLE_NAN_CHECK
00053     /* Optionally check input matrices for NaNs */
00054     if( LAPACKE_sge_nancheck( matrix_order, n, n, a, lda ) ) {
00055         return -6;
00056     }
00057     if( LAPACKE_sge_nancheck( matrix_order, n, n, b, ldb ) ) {
00058         return -8;
00059     }
00060 #endif
00061     /* Query optimal working array(s) size */
00062     info = LAPACKE_ssygvd_work( matrix_order, itype, jobz, uplo, n, a, lda, b,
00063                                 ldb, w, &work_query, lwork, &iwork_query,
00064                                 liwork );
00065     if( info != 0 ) {
00066         goto exit_level_0;
00067     }
00068     liwork = (lapack_int)iwork_query;
00069     lwork = (lapack_int)work_query;
00070     /* Allocate memory for work arrays */
00071     iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
00072     if( iwork == NULL ) {
00073         info = LAPACK_WORK_MEMORY_ERROR;
00074         goto exit_level_0;
00075     }
00076     work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
00077     if( work == NULL ) {
00078         info = LAPACK_WORK_MEMORY_ERROR;
00079         goto exit_level_1;
00080     }
00081     /* Call middle-level interface */
00082     info = LAPACKE_ssygvd_work( matrix_order, itype, jobz, uplo, n, a, lda, b,
00083                                 ldb, w, work, lwork, iwork, liwork );
00084     /* Release memory and exit */
00085     LAPACKE_free( work );
00086 exit_level_1:
00087     LAPACKE_free( iwork );
00088 exit_level_0:
00089     if( info == LAPACK_WORK_MEMORY_ERROR ) {
00090         LAPACKE_xerbla( "LAPACKE_ssygvd", info );
00091     }
00092     return info;
00093 }


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