LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dggsvp3_work()

lapack_int LAPACKE_dggsvp3_work ( int  matrix_layout,
char  jobu,
char  jobv,
char  jobq,
lapack_int  m,
lapack_int  p,
lapack_int  n,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
double  tola,
double  tolb,
lapack_int k,
lapack_int l,
double *  u,
lapack_int  ldu,
double *  v,
lapack_int  ldv,
double *  q,
lapack_int  ldq,
lapack_int iwork,
double *  tau,
double *  work,
lapack_int  lwork 
)

Definition at line 36 of file lapacke_dggsvp3_work.c.

45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_dggsvp3( &jobu, &jobv, &jobq, &m, &p, &n, a, &lda, b, &ldb, &tola,
50  &tolb, k, l, u, &ldu, v, &ldv, q, &ldq, iwork, tau, work,
51  &lwork, &info );
52  if( info < 0 ) {
53  info = info - 1;
54  }
55  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
56  lapack_int lda_t = MAX(1,m);
57  lapack_int ldb_t = MAX(1,p);
58  lapack_int ldq_t = MAX(1,n);
59  lapack_int ldu_t = MAX(1,m);
60  lapack_int ldv_t = MAX(1,p);
61  double* a_t = NULL;
62  double* b_t = NULL;
63  double* u_t = NULL;
64  double* v_t = NULL;
65  double* q_t = NULL;
66  /* Check leading dimension(s) */
67  if( lda < n ) {
68  info = -9;
69  LAPACKE_xerbla( "LAPACKE_dggsvp3_work", info );
70  return info;
71  }
72  if( ldb < n ) {
73  info = -11;
74  LAPACKE_xerbla( "LAPACKE_dggsvp3_work", info );
75  return info;
76  }
77  if( ldq < n ) {
78  info = -21;
79  LAPACKE_xerbla( "LAPACKE_dggsvp3_work", info );
80  return info;
81  }
82  if( ldu < m ) {
83  info = -17;
84  LAPACKE_xerbla( "LAPACKE_dggsvp3_work", info );
85  return info;
86  }
87  if( ldv < p ) {
88  info = -19;
89  LAPACKE_xerbla( "LAPACKE_dggsvp3_work", info );
90  return info;
91  }
92  if( lwork == -1 ) {
93  LAPACK_dggsvp3( &jobu, &jobv, &jobq, &m, &p, &n, a, &lda_t, b,
94  &ldb_t, &tola, &tolb, k, l, u, &ldu_t, v,
95  &ldv_t, q, &ldq_t, iwork, tau, work, &lwork,
96  &info );
97  return (info < 0) ? (info - 1) : info;
98  }
99  /* Allocate memory for temporary array(s) */
100  a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
101  if( a_t == NULL ) {
103  goto exit_level_0;
104  }
105  b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,n) );
106  if( b_t == NULL ) {
108  goto exit_level_1;
109  }
110  if( LAPACKE_lsame( jobu, 'u' ) ) {
111  u_t = (double*)LAPACKE_malloc( sizeof(double) * ldu_t * MAX(1,m) );
112  if( u_t == NULL ) {
114  goto exit_level_2;
115  }
116  }
117  if( LAPACKE_lsame( jobv, 'v' ) ) {
118  v_t = (double*)LAPACKE_malloc( sizeof(double) * ldv_t * MAX(1,p) );
119  if( v_t == NULL ) {
121  goto exit_level_3;
122  }
123  }
124  if( LAPACKE_lsame( jobq, 'q' ) ) {
125  q_t = (double*)LAPACKE_malloc( sizeof(double) * ldq_t * MAX(1,n) );
126  if( q_t == NULL ) {
128  goto exit_level_4;
129  }
130  }
131  /* Transpose input matrices */
132  LAPACKE_dge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
133  LAPACKE_dge_trans( matrix_layout, p, n, b, ldb, b_t, ldb_t );
134  /* Call LAPACK function and adjust info */
135  LAPACK_dggsvp3( &jobu, &jobv, &jobq, &m, &p, &n, a_t, &lda_t, b_t,
136  &ldb_t, &tola, &tolb, k, l, u_t, &ldu_t, v_t, &ldv_t,
137  q_t, &ldq_t, iwork, tau, work, &lwork, &info );
138  if( info < 0 ) {
139  info = info - 1;
140  }
141  /* Transpose output matrices */
142  LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
143  LAPACKE_dge_trans( LAPACK_COL_MAJOR, p, n, b_t, ldb_t, b, ldb );
144  if( LAPACKE_lsame( jobu, 'u' ) ) {
145  LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, m, u_t, ldu_t, u, ldu );
146  }
147  if( LAPACKE_lsame( jobv, 'v' ) ) {
148  LAPACKE_dge_trans( LAPACK_COL_MAJOR, p, p, v_t, ldv_t, v, ldv );
149  }
150  if( LAPACKE_lsame( jobq, 'q' ) ) {
151  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
152  }
153  /* Release memory and exit */
154  if( LAPACKE_lsame( jobq, 'q' ) ) {
155  LAPACKE_free( q_t );
156  }
157 exit_level_4:
158  if( LAPACKE_lsame( jobv, 'v' ) ) {
159  LAPACKE_free( v_t );
160  }
161 exit_level_3:
162  if( LAPACKE_lsame( jobu, 'u' ) ) {
163  LAPACKE_free( u_t );
164  }
165 exit_level_2:
166  LAPACKE_free( b_t );
167 exit_level_1:
168  LAPACKE_free( a_t );
169 exit_level_0:
170  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
171  LAPACKE_xerbla( "LAPACKE_dggsvp3_work", info );
172  }
173  } else {
174  info = -1;
175  LAPACKE_xerbla( "LAPACKE_dggsvp3_work", info );
176  }
177  return info;
178 }
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
#define LAPACKE_free(p)
Definition: lapacke.h:113
#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 LAPACK_dggsvp3(char *jobu, char *jobv, char *jobq, lapack_int *m, lapack_int *p, lapack_int *n, double *a, lapack_int *lda, double *b, lapack_int *ldb, double *tola, double *tolb, lapack_int *k, lapack_int *l, double *u, lapack_int *ldu, double *v, lapack_int *ldv, double *q, lapack_int *ldq, lapack_int *iwork, double *tau, double *work, lapack_int *lwork, lapack_int *info)
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
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