LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapacke_dsbgvx_work.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 middle-level C interface to LAPACK function dsbgvx
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33 
34 #include "lapacke_utils.h"
35 
36 lapack_int LAPACKE_dsbgvx_work( int matrix_layout, char jobz, char range,
37  char uplo, lapack_int n, lapack_int ka,
38  lapack_int kb, double* ab, lapack_int ldab,
39  double* bb, lapack_int ldbb, double* q,
40  lapack_int ldq, double vl, double vu,
41  lapack_int il, lapack_int iu, double abstol,
42  lapack_int* m, double* w, double* z,
43  lapack_int ldz, double* work, lapack_int* iwork,
44  lapack_int* ifail )
45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_dsbgvx( &jobz, &range, &uplo, &n, &ka, &kb, ab, &ldab, bb, &ldbb,
50  q, &ldq, &vl, &vu, &il, &iu, &abstol, m, w, z, &ldz,
51  work, iwork, ifail, &info );
52  if( info < 0 ) {
53  info = info - 1;
54  }
55  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
56  lapack_int ldab_t = MAX(1,ka+1);
57  lapack_int ldbb_t = MAX(1,kb+1);
58  lapack_int ldq_t = MAX(1,n);
59  lapack_int ldz_t = MAX(1,n);
60  double* ab_t = NULL;
61  double* bb_t = NULL;
62  double* q_t = NULL;
63  double* z_t = NULL;
64  /* Check leading dimension(s) */
65  if( ldab < n ) {
66  info = -9;
67  LAPACKE_xerbla( "LAPACKE_dsbgvx_work", info );
68  return info;
69  }
70  if( ldbb < n ) {
71  info = -11;
72  LAPACKE_xerbla( "LAPACKE_dsbgvx_work", info );
73  return info;
74  }
75  if( ldq < n ) {
76  info = -13;
77  LAPACKE_xerbla( "LAPACKE_dsbgvx_work", info );
78  return info;
79  }
80  if( ldz < n ) {
81  info = -22;
82  LAPACKE_xerbla( "LAPACKE_dsbgvx_work", info );
83  return info;
84  }
85  /* Allocate memory for temporary array(s) */
86  ab_t = (double*)LAPACKE_malloc( sizeof(double) * ldab_t * MAX(1,n) );
87  if( ab_t == NULL ) {
89  goto exit_level_0;
90  }
91  bb_t = (double*)LAPACKE_malloc( sizeof(double) * ldbb_t * MAX(1,n) );
92  if( bb_t == NULL ) {
94  goto exit_level_1;
95  }
96  if( LAPACKE_lsame( jobz, 'v' ) ) {
97  q_t = (double*)LAPACKE_malloc( sizeof(double) * ldq_t * MAX(1,n) );
98  if( q_t == NULL ) {
100  goto exit_level_2;
101  }
102  }
103  if( LAPACKE_lsame( jobz, 'v' ) ) {
104  z_t = (double*)LAPACKE_malloc( sizeof(double) * ldz_t * MAX(1,n) );
105  if( z_t == NULL ) {
107  goto exit_level_3;
108  }
109  }
110  /* Transpose input matrices */
111  LAPACKE_dsb_trans( matrix_layout, uplo, n, ka, ab, ldab, ab_t, ldab_t );
112  LAPACKE_dsb_trans( matrix_layout, uplo, n, kb, bb, ldbb, bb_t, ldbb_t );
113  /* Call LAPACK function and adjust info */
114  LAPACK_dsbgvx( &jobz, &range, &uplo, &n, &ka, &kb, ab_t, &ldab_t, bb_t,
115  &ldbb_t, q_t, &ldq_t, &vl, &vu, &il, &iu, &abstol, m, w,
116  z_t, &ldz_t, work, iwork, ifail, &info );
117  if( info < 0 ) {
118  info = info - 1;
119  }
120  /* Transpose output matrices */
121  LAPACKE_dsb_trans( LAPACK_COL_MAJOR, uplo, n, ka, ab_t, ldab_t, ab,
122  ldab );
123  LAPACKE_dsb_trans( LAPACK_COL_MAJOR, uplo, n, kb, bb_t, ldbb_t, bb,
124  ldbb );
125  if( LAPACKE_lsame( jobz, 'v' ) ) {
126  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
127  }
128  if( LAPACKE_lsame( jobz, 'v' ) ) {
129  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
130  }
131  /* Release memory and exit */
132  if( LAPACKE_lsame( jobz, 'v' ) ) {
133  LAPACKE_free( z_t );
134  }
135 exit_level_3:
136  if( LAPACKE_lsame( jobz, 'v' ) ) {
137  LAPACKE_free( q_t );
138  }
139 exit_level_2:
140  LAPACKE_free( bb_t );
141 exit_level_1:
142  LAPACKE_free( ab_t );
143 exit_level_0:
144  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
145  LAPACKE_xerbla( "LAPACKE_dsbgvx_work", info );
146  }
147  } else {
148  info = -1;
149  LAPACKE_xerbla( "LAPACKE_dsbgvx_work", info );
150  }
151  return info;
152 }
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
void LAPACK_dsbgvx(char *jobz, char *range, char *uplo, lapack_int *n, lapack_int *ka, lapack_int *kb, double *ab, lapack_int *ldab, double *bb, lapack_int *ldbb, double *q, lapack_int *ldq, 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, lapack_int *info)
void LAPACKE_dsb_trans(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
lapack_int LAPACKE_dsbgvx_work(int matrix_layout, char jobz, char range, char uplo, lapack_int n, lapack_int ka, lapack_int kb, double *ab, lapack_int ldab, double *bb, lapack_int ldbb, double *q, lapack_int ldq, 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_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123