lapacke_ssyevr.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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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 ssyevr
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_ssyevr( int matrix_order, char jobz, char range, char uplo,
00038                            lapack_int n, float* a, lapack_int lda, float vl,
00039                            float vu, lapack_int il, lapack_int iu, float abstol,
00040                            lapack_int* m, float* w, float* z, lapack_int ldz,
00041                            lapack_int* isuppz )
00042 {
00043     lapack_int info = 0;
00044     lapack_int liwork = -1;
00045     lapack_int lwork = -1;
00046     lapack_int* iwork = NULL;
00047     float* work = NULL;
00048     lapack_int iwork_query;
00049     float work_query;
00050     if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
00051         LAPACKE_xerbla( "LAPACKE_ssyevr", -1 );
00052         return -1;
00053     }
00054 #ifndef LAPACK_DISABLE_NAN_CHECK
00055     /* Optionally check input matrices for NaNs */
00056     if( LAPACKE_ssy_nancheck( matrix_order, uplo, n, a, lda ) ) {
00057         return -6;
00058     }
00059     if( LAPACKE_s_nancheck( 1, &abstol, 1 ) ) {
00060         return -12;
00061     }
00062     if( LAPACKE_lsame( range, 'v' ) ) {
00063         if( LAPACKE_s_nancheck( 1, &vl, 1 ) ) {
00064             return -8;
00065         }
00066     }
00067     if( LAPACKE_lsame( range, 'v' ) ) {
00068         if( LAPACKE_s_nancheck( 1, &vu, 1 ) ) {
00069             return -9;
00070         }
00071     }
00072 #endif
00073     /* Query optimal working array(s) size */
00074     info = LAPACKE_ssyevr_work( matrix_order, jobz, range, uplo, n, a, lda, vl,
00075                                 vu, il, iu, abstol, m, w, z, ldz, isuppz,
00076                                 &work_query, lwork, &iwork_query, liwork );
00077     if( info != 0 ) {
00078         goto exit_level_0;
00079     }
00080     liwork = (lapack_int)iwork_query;
00081     lwork = (lapack_int)work_query;
00082     /* Allocate memory for work arrays */
00083     iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
00084     if( iwork == NULL ) {
00085         info = LAPACK_WORK_MEMORY_ERROR;
00086         goto exit_level_0;
00087     }
00088     work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
00089     if( work == NULL ) {
00090         info = LAPACK_WORK_MEMORY_ERROR;
00091         goto exit_level_1;
00092     }
00093     /* Call middle-level interface */
00094     info = LAPACKE_ssyevr_work( matrix_order, jobz, range, uplo, n, a, lda, vl,
00095                                 vu, il, iu, abstol, m, w, z, ldz, isuppz, work,
00096                                 lwork, iwork, liwork );
00097     /* Release memory and exit */
00098     LAPACKE_free( work );
00099 exit_level_1:
00100     LAPACKE_free( iwork );
00101 exit_level_0:
00102     if( info == LAPACK_WORK_MEMORY_ERROR ) {
00103         LAPACKE_xerbla( "LAPACKE_ssyevr", info );
00104     }
00105     return info;
00106 }


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autogenerated on Sat Jun 8 2019 18:55:54