LAPACK  3.8.0
LAPACK: Linear Algebra PACKage
lapacke_sggesx.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 sggesx
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33 
34 #include "lapacke_utils.h"
35 
36 lapack_int LAPACKE_sggesx( int matrix_layout, char jobvsl, char jobvsr,
37  char sort, LAPACK_S_SELECT3 selctg, char sense,
38  lapack_int n, float* a, lapack_int lda, float* b,
39  lapack_int ldb, lapack_int* sdim, float* alphar,
40  float* alphai, float* beta, float* vsl,
41  lapack_int ldvsl, float* vsr, lapack_int ldvsr,
42  float* rconde, float* rcondv )
43 {
44  lapack_int info = 0;
45  lapack_int liwork = -1;
46  lapack_int lwork = -1;
47  lapack_logical* bwork = NULL;
48  lapack_int* iwork = NULL;
49  float* work = NULL;
50  lapack_int iwork_query;
51  float work_query;
52  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
53  LAPACKE_xerbla( "LAPACKE_sggesx", -1 );
54  return -1;
55  }
56 #ifndef LAPACK_DISABLE_NAN_CHECK
57  if( LAPACKE_get_nancheck() ) {
58  /* Optionally check input matrices for NaNs */
59  if( LAPACKE_sge_nancheck( matrix_layout, n, n, a, lda ) ) {
60  return -8;
61  }
62  if( LAPACKE_sge_nancheck( matrix_layout, n, n, b, ldb ) ) {
63  return -10;
64  }
65  }
66 #endif
67  /* Allocate memory for working array(s) */
68  if( LAPACKE_lsame( sort, 's' ) ) {
69  bwork = (lapack_logical*)
70  LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
71  if( bwork == NULL ) {
73  goto exit_level_0;
74  }
75  }
76  /* Query optimal working array(s) size */
77  info = LAPACKE_sggesx_work( matrix_layout, jobvsl, jobvsr, sort, selctg,
78  sense, n, a, lda, b, ldb, sdim, alphar, alphai,
79  beta, vsl, ldvsl, vsr, ldvsr, rconde, rcondv,
80  &work_query, lwork, &iwork_query, liwork,
81  bwork );
82  if( info != 0 ) {
83  goto exit_level_1;
84  }
85  liwork = (lapack_int)iwork_query;
86  lwork = (lapack_int)work_query;
87  /* Allocate memory for work arrays */
88  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
89  if( iwork == NULL ) {
91  goto exit_level_1;
92  }
93  work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
94  if( work == NULL ) {
96  goto exit_level_2;
97  }
98  /* Call middle-level interface */
99  info = LAPACKE_sggesx_work( matrix_layout, jobvsl, jobvsr, sort, selctg,
100  sense, n, a, lda, b, ldb, sdim, alphar, alphai,
101  beta, vsl, ldvsl, vsr, ldvsr, rconde, rcondv,
102  work, lwork, iwork, liwork, bwork );
103  /* Release memory and exit */
104  LAPACKE_free( work );
105 exit_level_2:
106  LAPACKE_free( iwork );
107 exit_level_1:
108  if( LAPACKE_lsame( sort, 's' ) ) {
109  LAPACKE_free( bwork );
110  }
111 exit_level_0:
112  if( info == LAPACK_WORK_MEMORY_ERROR ) {
113  LAPACKE_xerbla( "LAPACKE_sggesx", info );
114  }
115  return info;
116 }
#define MAX(x, y)
Definition: lapacke_utils.h:47
lapack_logical LAPACKE_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
int LAPACKE_get_nancheck()
lapack_int LAPACKE_sggesx(int matrix_layout, char jobvsl, char jobvsr, char sort, LAPACK_S_SELECT3 selctg, char sense, lapack_int n, float *a, lapack_int lda, float *b, lapack_int ldb, lapack_int *sdim, float *alphar, float *alphai, float *beta, float *vsl, lapack_int ldvsl, float *vsr, lapack_int ldvsr, float *rconde, float *rcondv)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
lapack_int LAPACKE_sggesx_work(int matrix_layout, char jobvsl, char jobvsr, char sort, LAPACK_S_SELECT3 selctg, char sense, lapack_int n, float *a, lapack_int lda, float *b, lapack_int ldb, lapack_int *sdim, float *alphar, float *alphai, float *beta, float *vsl, lapack_int ldvsl, float *vsr, lapack_int ldvsr, float *rconde, float *rcondv, float *work, lapack_int lwork, lapack_int *iwork, lapack_int liwork, lapack_logical *bwork)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define lapack_logical
Definition: lapacke.h:51
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical(* LAPACK_S_SELECT3)(const float *, const float *, const float *)
Definition: lapacke.h:131