LAPACK  3.8.0
LAPACK: Linear Algebra PACKage
lapacke_dstevx.c
Go to the documentation of this file.
1 /*****************************************************************************
2  Copyright (c) 2014, Intel Corp.
3  All rights reserved.
4 
5  Redistribution and use in source and binary forms, with or without
6  modification, are permitted provided that the following conditions are met:
7 
8  * Redistributions of source code must retain the above copyright notice,
9  this list of conditions and the following disclaimer.
10  * Redistributions in binary form must reproduce the above copyright
11  notice, this list of conditions and the following disclaimer in the
12  documentation and/or other materials provided with the distribution.
13  * Neither the name of Intel Corporation nor the names of its contributors
14  may be used to endorse or promote products derived from this software
15  without specific prior written permission.
16 
17  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27  THE POSSIBILITY OF SUCH DAMAGE.
28 *****************************************************************************
29 * Contents: Native high-level C interface to LAPACK function dstevx
30 * Author: Intel Corporation
31 * Generated June 2017
32 *****************************************************************************/
33 
34 #include "lapacke_utils.h"
35 
36 lapack_int LAPACKE_dstevx( int matrix_layout, char jobz, char range,
37  lapack_int n, double* d, double* e, double vl,
38  double vu, lapack_int il, lapack_int iu,
39  double abstol, lapack_int* m, double* w, double* z,
40  lapack_int ldz, lapack_int* ifail )
41 {
42  lapack_int info = 0;
43  lapack_int* iwork = NULL;
44  double* work = NULL;
45  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46  LAPACKE_xerbla( "LAPACKE_dstevx", -1 );
47  return -1;
48  }
49 #ifndef LAPACK_DISABLE_NAN_CHECK
50  if( LAPACKE_get_nancheck() ) {
51  /* Optionally check input matrices for NaNs */
52  if( LAPACKE_d_nancheck( 1, &abstol, 1 ) ) {
53  return -11;
54  }
55  if( LAPACKE_d_nancheck( n, d, 1 ) ) {
56  return -5;
57  }
58  if( LAPACKE_d_nancheck( n-1, e, 1 ) ) {
59  return -6;
60  }
61  if( LAPACKE_lsame( range, 'v' ) ) {
62  if( LAPACKE_d_nancheck( 1, &vl, 1 ) ) {
63  return -7;
64  }
65  }
66  if( LAPACKE_lsame( range, 'v' ) ) {
67  if( LAPACKE_d_nancheck( 1, &vu, 1 ) ) {
68  return -8;
69  }
70  }
71  }
72 #endif
73  /* Allocate memory for working array(s) */
74  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,5*n) );
75  if( iwork == NULL ) {
77  goto exit_level_0;
78  }
79  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,5*n) );
80  if( work == NULL ) {
82  goto exit_level_1;
83  }
84  /* Call middle-level interface */
85  info = LAPACKE_dstevx_work( matrix_layout, jobz, range, n, d, e, vl, vu, il,
86  iu, abstol, m, w, z, ldz, work, iwork, ifail );
87  /* Release memory and exit */
88  LAPACKE_free( work );
89 exit_level_1:
90  LAPACKE_free( iwork );
91 exit_level_0:
92  if( info == LAPACK_WORK_MEMORY_ERROR ) {
93  LAPACKE_xerbla( "LAPACKE_dstevx", info );
94  }
95  return info;
96 }
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
int LAPACKE_get_nancheck()
#define lapack_int
Definition: lapacke.h:47
lapack_int LAPACKE_dstevx_work(int matrix_layout, char jobz, char range, lapack_int n, double *d, double *e, double vl, double vu, lapack_int il, lapack_int iu, double abstol, lapack_int *m, double *w, double *z, lapack_int ldz, double *work, lapack_int *iwork, lapack_int *ifail)
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_int LAPACKE_dstevx(int matrix_layout, char jobz, char range, lapack_int n, double *d, double *e, double vl, double vu, lapack_int il, lapack_int iu, double abstol, lapack_int *m, double *w, double *z, lapack_int ldz, lapack_int *ifail)
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACKE_xerbla(const char *name, lapack_int info)