LAPACK  3.8.0
LAPACK: Linear Algebra PACKage
lapacke_zhpgvd.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 zhpgvd
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33 
34 #include "lapacke_utils.h"
35 
36 lapack_int LAPACKE_zhpgvd( int matrix_layout, lapack_int itype, char jobz,
37  char uplo, lapack_int n, lapack_complex_double* ap,
38  lapack_complex_double* bp, double* w,
40 {
41  lapack_int info = 0;
42  lapack_int liwork = -1;
43  lapack_int lrwork = -1;
44  lapack_int lwork = -1;
45  lapack_int* iwork = NULL;
46  double* rwork = NULL;
47  lapack_complex_double* work = NULL;
48  lapack_int iwork_query;
49  double rwork_query;
50  lapack_complex_double work_query;
51  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
52  LAPACKE_xerbla( "LAPACKE_zhpgvd", -1 );
53  return -1;
54  }
55 #ifndef LAPACK_DISABLE_NAN_CHECK
56  if( LAPACKE_get_nancheck() ) {
57  /* Optionally check input matrices for NaNs */
58  if( LAPACKE_zhp_nancheck( n, ap ) ) {
59  return -6;
60  }
61  if( LAPACKE_zhp_nancheck( n, bp ) ) {
62  return -7;
63  }
64  }
65 #endif
66  /* Query optimal working array(s) size */
67  info = LAPACKE_zhpgvd_work( matrix_layout, itype, jobz, uplo, n, ap, bp, w,
68  z, ldz, &work_query, lwork, &rwork_query,
69  lrwork, &iwork_query, liwork );
70  if( info != 0 ) {
71  goto exit_level_0;
72  }
73  liwork = (lapack_int)iwork_query;
74  lrwork = (lapack_int)rwork_query;
75  lwork = LAPACK_Z2INT( work_query );
76  /* Allocate memory for work arrays */
77  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
78  if( iwork == NULL ) {
80  goto exit_level_0;
81  }
82  rwork = (double*)LAPACKE_malloc( sizeof(double) * lrwork );
83  if( rwork == NULL ) {
85  goto exit_level_1;
86  }
87  work = (lapack_complex_double*)
88  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
89  if( work == NULL ) {
91  goto exit_level_2;
92  }
93  /* Call middle-level interface */
94  info = LAPACKE_zhpgvd_work( matrix_layout, itype, jobz, uplo, n, ap, bp, w,
95  z, ldz, work, lwork, rwork, lrwork, iwork,
96  liwork );
97  /* Release memory and exit */
98  LAPACKE_free( work );
99 exit_level_2:
100  LAPACKE_free( rwork );
101 exit_level_1:
102  LAPACKE_free( iwork );
103 exit_level_0:
104  if( info == LAPACK_WORK_MEMORY_ERROR ) {
105  LAPACKE_xerbla( "LAPACKE_zhpgvd", info );
106  }
107  return info;
108 }
#define LAPACK_Z2INT(x)
Definition: lapacke.h:117
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
lapack_int LAPACKE_zhpgvd(int matrix_layout, lapack_int itype, char jobz, char uplo, lapack_int n, lapack_complex_double *ap, lapack_complex_double *bp, double *w, lapack_complex_double *z, lapack_int ldz)
#define lapack_complex_double
Definition: lapacke.h:90
lapack_logical LAPACKE_zhp_nancheck(lapack_int n, const lapack_complex_double *ap)
lapack_int LAPACKE_zhpgvd_work(int matrix_layout, lapack_int itype, char jobz, char uplo, lapack_int n, lapack_complex_double *ap, lapack_complex_double *bp, double *w, lapack_complex_double *z, lapack_int ldz, lapack_complex_double *work, lapack_int lwork, double *rwork, lapack_int lrwork, lapack_int *iwork, lapack_int liwork)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
int LAPACKE_get_nancheck()