lapacke_sgehrd.c
Go to the documentation of this file.
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 sgehrd
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_sgehrd( int matrix_order, lapack_int n, lapack_int ilo,
00038                            lapack_int ihi, float* a, lapack_int lda,
00039                            float* tau )
00040 {
00041     lapack_int info = 0;
00042     lapack_int lwork = -1;
00043     float* work = NULL;
00044     float work_query;
00045     if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
00046         LAPACKE_xerbla( "LAPACKE_sgehrd", -1 );
00047         return -1;
00048     }
00049 #ifndef LAPACK_DISABLE_NAN_CHECK
00050     /* Optionally check input matrices for NaNs */
00051     if( LAPACKE_sge_nancheck( matrix_order, n, n, a, lda ) ) {
00052         return -5;
00053     }
00054 #endif
00055     /* Query optimal working array(s) size */
00056     info = LAPACKE_sgehrd_work( matrix_order, n, ilo, ihi, a, lda, tau,
00057                                 &work_query, lwork );
00058     if( info != 0 ) {
00059         goto exit_level_0;
00060     }
00061     lwork = (lapack_int)work_query;
00062     /* Allocate memory for work arrays */
00063     work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
00064     if( work == NULL ) {
00065         info = LAPACK_WORK_MEMORY_ERROR;
00066         goto exit_level_0;
00067     }
00068     /* Call middle-level interface */
00069     info = LAPACKE_sgehrd_work( matrix_order, n, ilo, ihi, a, lda, tau, work,
00070                                 lwork );
00071     /* Release memory and exit */
00072     LAPACKE_free( work );
00073 exit_level_0:
00074     if( info == LAPACK_WORK_MEMORY_ERROR ) {
00075         LAPACKE_xerbla( "LAPACKE_sgehrd", info );
00076     }
00077     return info;
00078 }


swiftnav
Author(s):
autogenerated on Sat Jun 8 2019 18:55:53