LAPACK  3.8.0
LAPACK: Linear Algebra PACKage
lapacke_cggsvd_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 cggsvd
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33 
34 #include "lapacke_utils.h"
35 
36 lapack_int LAPACKE_cggsvd_work( int matrix_layout, char jobu, char jobv,
37  char jobq, lapack_int m, lapack_int n,
41  float* alpha, float* beta,
45  lapack_complex_float* work, float* rwork,
46  lapack_int* iwork )
47 {
48  lapack_int info = 0;
49  if( matrix_layout == LAPACK_COL_MAJOR ) {
50  /* Call LAPACK function and adjust info */
51  LAPACK_cggsvd( &jobu, &jobv, &jobq, &m, &n, &p, k, l, a, &lda, b, &ldb,
52  alpha, beta, u, &ldu, v, &ldv, q, &ldq, work, rwork,
53  iwork, &info );
54  if( info < 0 ) {
55  info = info - 1;
56  }
57  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
58  lapack_int lda_t = MAX(1,m);
59  lapack_int ldb_t = MAX(1,p);
60  lapack_int ldq_t = MAX(1,n);
61  lapack_int ldu_t = MAX(1,m);
62  lapack_int ldv_t = MAX(1,p);
63  lapack_complex_float* a_t = NULL;
64  lapack_complex_float* b_t = NULL;
65  lapack_complex_float* u_t = NULL;
66  lapack_complex_float* v_t = NULL;
67  lapack_complex_float* q_t = NULL;
68  /* Check leading dimension(s) */
69  if( lda < n ) {
70  info = -11;
71  LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
72  return info;
73  }
74  if( ldb < n ) {
75  info = -13;
76  LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
77  return info;
78  }
79  if( ldq < n ) {
80  info = -21;
81  LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
82  return info;
83  }
84  if( ldu < m ) {
85  info = -17;
86  LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
87  return info;
88  }
89  if( ldv < p ) {
90  info = -19;
91  LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
92  return info;
93  }
94  /* Allocate memory for temporary array(s) */
95  a_t = (lapack_complex_float*)
96  LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,n) );
97  if( a_t == NULL ) {
99  goto exit_level_0;
100  }
101  b_t = (lapack_complex_float*)
102  LAPACKE_malloc( sizeof(lapack_complex_float) * ldb_t * MAX(1,n) );
103  if( b_t == NULL ) {
105  goto exit_level_1;
106  }
107  if( LAPACKE_lsame( jobu, 'u' ) ) {
108  u_t = (lapack_complex_float*)
110  ldu_t * MAX(1,m) );
111  if( u_t == NULL ) {
113  goto exit_level_2;
114  }
115  }
116  if( LAPACKE_lsame( jobv, 'v' ) ) {
117  v_t = (lapack_complex_float*)
119  ldv_t * MAX(1,p) );
120  if( v_t == NULL ) {
122  goto exit_level_3;
123  }
124  }
125  if( LAPACKE_lsame( jobq, 'q' ) ) {
126  q_t = (lapack_complex_float*)
128  ldq_t * MAX(1,n) );
129  if( q_t == NULL ) {
131  goto exit_level_4;
132  }
133  }
134  /* Transpose input matrices */
135  LAPACKE_cge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
136  LAPACKE_cge_trans( matrix_layout, p, n, b, ldb, b_t, ldb_t );
137  /* Call LAPACK function and adjust info */
138  LAPACK_cggsvd( &jobu, &jobv, &jobq, &m, &n, &p, k, l, a_t, &lda_t, b_t,
139  &ldb_t, alpha, beta, u_t, &ldu_t, v_t, &ldv_t, q_t,
140  &ldq_t, work, rwork, iwork, &info );
141  if( info < 0 ) {
142  info = info - 1;
143  }
144  /* Transpose output matrices */
145  LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
146  LAPACKE_cge_trans( LAPACK_COL_MAJOR, p, n, b_t, ldb_t, b, ldb );
147  if( LAPACKE_lsame( jobu, 'u' ) ) {
148  LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, m, u_t, ldu_t, u, ldu );
149  }
150  if( LAPACKE_lsame( jobv, 'v' ) ) {
151  LAPACKE_cge_trans( LAPACK_COL_MAJOR, p, p, v_t, ldv_t, v, ldv );
152  }
153  if( LAPACKE_lsame( jobq, 'q' ) ) {
154  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
155  }
156  /* Release memory and exit */
157  if( LAPACKE_lsame( jobq, 'q' ) ) {
158  LAPACKE_free( q_t );
159  }
160 exit_level_4:
161  if( LAPACKE_lsame( jobv, 'v' ) ) {
162  LAPACKE_free( v_t );
163  }
164 exit_level_3:
165  if( LAPACKE_lsame( jobu, 'u' ) ) {
166  LAPACKE_free( u_t );
167  }
168 exit_level_2:
169  LAPACKE_free( b_t );
170 exit_level_1:
171  LAPACKE_free( a_t );
172 exit_level_0:
173  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
174  LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
175  }
176  } else {
177  info = -1;
178  LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
179  }
180  return info;
181 }
void LAPACKE_cge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_cggsvd(char *jobu, char *jobv, char *jobq, lapack_int *m, lapack_int *n, lapack_int *p, lapack_int *k, lapack_int *l, lapack_complex_float *a, lapack_int *lda, lapack_complex_float *b, lapack_int *ldb, float *alpha, float *beta, lapack_complex_float *u, lapack_int *ldu, lapack_complex_float *v, lapack_int *ldv, lapack_complex_float *q, lapack_int *ldq, lapack_complex_float *work, float *rwork, lapack_int *iwork, lapack_int *info)
#define lapack_complex_float
Definition: lapacke.h:74
#define MAX(x, y)
Definition: lapacke_utils.h:47
#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
lapack_int LAPACKE_cggsvd_work(int matrix_layout, char jobu, char jobv, char jobq, lapack_int m, lapack_int n, lapack_int p, lapack_int *k, lapack_int *l, lapack_complex_float *a, lapack_int lda, lapack_complex_float *b, lapack_int ldb, float *alpha, float *beta, lapack_complex_float *u, lapack_int ldu, lapack_complex_float *v, lapack_int ldv, lapack_complex_float *q, lapack_int ldq, lapack_complex_float *work, float *rwork, lapack_int *iwork)