LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapacke_dgghrd_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 dgghrd
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33 
34 #include "lapacke_utils.h"
35 
36 lapack_int LAPACKE_dgghrd_work( int matrix_layout, char compq, char compz,
37  lapack_int n, lapack_int ilo, lapack_int ihi,
38  double* a, lapack_int lda, double* b,
39  lapack_int ldb, double* q, lapack_int ldq,
40  double* z, lapack_int ldz )
41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_dgghrd( &compq, &compz, &n, &ilo, &ihi, a, &lda, b, &ldb, q,
46  &ldq, z, &ldz, &info );
47  if( info < 0 ) {
48  info = info - 1;
49  }
50  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51  lapack_int lda_t = MAX(1,n);
52  lapack_int ldb_t = MAX(1,n);
53  lapack_int ldq_t = MAX(1,n);
54  lapack_int ldz_t = MAX(1,n);
55  double* a_t = NULL;
56  double* b_t = NULL;
57  double* q_t = NULL;
58  double* z_t = NULL;
59  /* Check leading dimension(s) */
60  if( lda < n ) {
61  info = -8;
62  LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
63  return info;
64  }
65  if( ldb < n ) {
66  info = -10;
67  LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
68  return info;
69  }
70  if( ldq < n ) {
71  info = -12;
72  LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
73  return info;
74  }
75  if( ldz < n ) {
76  info = -14;
77  LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
78  return info;
79  }
80  /* Allocate memory for temporary array(s) */
81  a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
82  if( a_t == NULL ) {
84  goto exit_level_0;
85  }
86  b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,n) );
87  if( b_t == NULL ) {
89  goto exit_level_1;
90  }
91  if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
92  q_t = (double*)LAPACKE_malloc( sizeof(double) * ldq_t * MAX(1,n) );
93  if( q_t == NULL ) {
95  goto exit_level_2;
96  }
97  }
98  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
99  z_t = (double*)LAPACKE_malloc( sizeof(double) * ldz_t * MAX(1,n) );
100  if( z_t == NULL ) {
102  goto exit_level_3;
103  }
104  }
105  /* Transpose input matrices */
106  LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
107  LAPACKE_dge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
108  if( LAPACKE_lsame( compq, 'v' ) ) {
109  LAPACKE_dge_trans( matrix_layout, n, n, q, ldq, q_t, ldq_t );
110  }
111  if( LAPACKE_lsame( compz, 'v' ) ) {
112  LAPACKE_dge_trans( matrix_layout, n, n, z, ldz, z_t, ldz_t );
113  }
114  /* Call LAPACK function and adjust info */
115  LAPACK_dgghrd( &compq, &compz, &n, &ilo, &ihi, a_t, &lda_t, b_t, &ldb_t,
116  q_t, &ldq_t, z_t, &ldz_t, &info );
117  if( info < 0 ) {
118  info = info - 1;
119  }
120  /* Transpose output matrices */
121  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
122  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
123  if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
124  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
125  }
126  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
127  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
128  }
129  /* Release memory and exit */
130  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
131  LAPACKE_free( z_t );
132  }
133 exit_level_3:
134  if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
135  LAPACKE_free( q_t );
136  }
137 exit_level_2:
138  LAPACKE_free( b_t );
139 exit_level_1:
140  LAPACKE_free( a_t );
141 exit_level_0:
142  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
143  LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
144  }
145  } else {
146  info = -1;
147  LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
148  }
149  return info;
150 }
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
lapack_int LAPACKE_dgghrd_work(int matrix_layout, char compq, char compz, lapack_int n, lapack_int ilo, lapack_int ihi, double *a, lapack_int lda, double *b, lapack_int ldb, double *q, lapack_int ldq, double *z, lapack_int ldz)
#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
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
void LAPACK_dgghrd(char *compq, char *compz, lapack_int *n, lapack_int *ilo, lapack_int *ihi, double *a, lapack_int *lda, double *b, lapack_int *ldb, double *q, lapack_int *ldq, double *z, lapack_int *ldz, lapack_int *info)