LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapacke_strsen_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 strsen
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33 
34 #include "lapacke_utils.h"
35 
36 lapack_int LAPACKE_strsen_work( int matrix_layout, char job, char compq,
37  const lapack_logical* select, lapack_int n,
38  float* t, lapack_int ldt, float* q,
39  lapack_int ldq, float* wr, float* wi,
40  lapack_int* m, float* s, float* sep,
41  float* work, lapack_int lwork,
42  lapack_int* iwork, lapack_int liwork )
43 {
44  lapack_int info = 0;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_strsen( &job, &compq, select, &n, t, &ldt, q, &ldq, wr, wi, m, s,
48  sep, work, &lwork, iwork, &liwork, &info );
49  if( info < 0 ) {
50  info = info - 1;
51  }
52  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53  lapack_int ldq_t = MAX(1,n);
54  lapack_int ldt_t = MAX(1,n);
55  float* t_t = NULL;
56  float* q_t = NULL;
57  /* Check leading dimension(s) */
58  if( ldq < n ) {
59  info = -9;
60  LAPACKE_xerbla( "LAPACKE_strsen_work", info );
61  return info;
62  }
63  if( ldt < n ) {
64  info = -7;
65  LAPACKE_xerbla( "LAPACKE_strsen_work", info );
66  return info;
67  }
68  /* Allocate memory for temporary array T */
69  t_t = (float*)LAPACKE_malloc( sizeof(float) * ldt_t * MAX(1,n) );
70  if( t_t == NULL ) {
72  goto exit_level_0;
73  }
74  /* Transpose input matrix T */
75  LAPACKE_sge_trans( matrix_layout, n, n, t, ldt, t_t, ldt_t );
76  /* Query optimal working array(s) size if requested */
77  if( liwork == -1 || lwork == -1 ) {
78  LAPACK_strsen( &job, &compq, select, &n, t_t, &ldt_t, q, &ldq_t, wr,
79  wi, m, s, sep, work, &lwork, iwork, &liwork, &info );
80  LAPACKE_free( t_t );
81  return (info < 0) ? (info - 1) : info;
82  }
83  /* Allocate memory for temporary array(s) */
84  if( LAPACKE_lsame( compq, 'v' ) ) {
85  q_t = (float*)LAPACKE_malloc( sizeof(float) * ldq_t * MAX(1,n) );
86  if( q_t == NULL ) {
88  goto exit_level_1;
89  }
90  }
91  /* Transpose input matrices */
92  if( LAPACKE_lsame( compq, 'v' ) ) {
93  LAPACKE_sge_trans( matrix_layout, n, n, q, ldq, q_t, ldq_t );
94  }
95  /* Call LAPACK function and adjust info */
96  LAPACK_strsen( &job, &compq, select, &n, t_t, &ldt_t, q_t, &ldq_t, wr,
97  wi, m, s, sep, work, &lwork, iwork, &liwork, &info );
98  if( info < 0 ) {
99  info = info - 1;
100  }
101  /* Transpose output matrices */
102  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, t_t, ldt_t, t, ldt );
103  if( LAPACKE_lsame( compq, 'v' ) ) {
104  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
105  }
106  /* Release memory and exit */
107  if( LAPACKE_lsame( compq, 'v' ) ) {
108  LAPACKE_free( q_t );
109  }
110 exit_level_1:
111  LAPACKE_free( t_t );
112 exit_level_0:
113  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
114  LAPACKE_xerbla( "LAPACKE_strsen_work", info );
115  }
116  } else {
117  info = -1;
118  LAPACKE_xerbla( "LAPACKE_strsen_work", info );
119  }
120  return info;
121 }
#define lapack_logical
Definition: lapacke.h:51
void LAPACK_strsen(char *job, char *compq, const lapack_logical *select, lapack_int *n, float *t, lapack_int *ldt, float *q, lapack_int *ldq, float *wr, float *wi, lapack_int *m, float *s, float *sep, float *work, lapack_int *lwork, lapack_int *iwork, lapack_int *liwork, lapack_int *info)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
lapack_int LAPACKE_strsen_work(int matrix_layout, char job, char compq, const lapack_logical *select, lapack_int n, float *t, lapack_int ldt, float *q, lapack_int ldq, float *wr, float *wi, lapack_int *m, float *s, float *sep, float *work, lapack_int lwork, lapack_int *iwork, lapack_int liwork)
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *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
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123