LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sggsvp_work()

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

Definition at line 36 of file lapacke_sggsvp_work.c.

44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_sggsvp( &jobu, &jobv, &jobq, &m, &p, &n, a, &lda, b, &ldb, &tola,
49  &tolb, k, l, u, &ldu, v, &ldv, q, &ldq, iwork, tau, work,
50  &info );
51  if( info < 0 ) {
52  info = info - 1;
53  }
54  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
55  lapack_int lda_t = MAX(1,m);
56  lapack_int ldb_t = MAX(1,p);
57  lapack_int ldq_t = MAX(1,n);
58  lapack_int ldu_t = MAX(1,m);
59  lapack_int ldv_t = MAX(1,p);
60  float* a_t = NULL;
61  float* b_t = NULL;
62  float* u_t = NULL;
63  float* v_t = NULL;
64  float* q_t = NULL;
65  /* Check leading dimension(s) */
66  if( lda < n ) {
67  info = -9;
68  LAPACKE_xerbla( "LAPACKE_sggsvp_work", info );
69  return info;
70  }
71  if( ldb < n ) {
72  info = -11;
73  LAPACKE_xerbla( "LAPACKE_sggsvp_work", info );
74  return info;
75  }
76  if( ldq < n ) {
77  info = -21;
78  LAPACKE_xerbla( "LAPACKE_sggsvp_work", info );
79  return info;
80  }
81  if( ldu < m ) {
82  info = -17;
83  LAPACKE_xerbla( "LAPACKE_sggsvp_work", info );
84  return info;
85  }
86  if( ldv < m ) {
87  info = -19;
88  LAPACKE_xerbla( "LAPACKE_sggsvp_work", info );
89  return info;
90  }
91  /* Allocate memory for temporary array(s) */
92  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
93  if( a_t == NULL ) {
95  goto exit_level_0;
96  }
97  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,n) );
98  if( b_t == NULL ) {
100  goto exit_level_1;
101  }
102  if( LAPACKE_lsame( jobu, 'u' ) ) {
103  u_t = (float*)LAPACKE_malloc( sizeof(float) * ldu_t * MAX(1,m) );
104  if( u_t == NULL ) {
106  goto exit_level_2;
107  }
108  }
109  if( LAPACKE_lsame( jobv, 'v' ) ) {
110  v_t = (float*)LAPACKE_malloc( sizeof(float) * ldv_t * MAX(1,m) );
111  if( v_t == NULL ) {
113  goto exit_level_3;
114  }
115  }
116  if( LAPACKE_lsame( jobq, 'q' ) ) {
117  q_t = (float*)LAPACKE_malloc( sizeof(float) * ldq_t * MAX(1,n) );
118  if( q_t == NULL ) {
120  goto exit_level_4;
121  }
122  }
123  /* Transpose input matrices */
124  LAPACKE_sge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
125  LAPACKE_sge_trans( matrix_layout, p, n, b, ldb, b_t, ldb_t );
126  /* Call LAPACK function and adjust info */
127  LAPACK_sggsvp( &jobu, &jobv, &jobq, &m, &p, &n, a_t, &lda_t, b_t,
128  &ldb_t, &tola, &tolb, k, l, u_t, &ldu_t, v_t, &ldv_t,
129  q_t, &ldq_t, iwork, tau, work, &info );
130  if( info < 0 ) {
131  info = info - 1;
132  }
133  /* Transpose output matrices */
134  LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
135  LAPACKE_sge_trans( LAPACK_COL_MAJOR, p, n, b_t, ldb_t, b, ldb );
136  if( LAPACKE_lsame( jobu, 'u' ) ) {
137  LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, m, u_t, ldu_t, u, ldu );
138  }
139  if( LAPACKE_lsame( jobv, 'v' ) ) {
140  LAPACKE_sge_trans( LAPACK_COL_MAJOR, p, m, v_t, ldv_t, v, ldv );
141  }
142  if( LAPACKE_lsame( jobq, 'q' ) ) {
143  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
144  }
145  /* Release memory and exit */
146  if( LAPACKE_lsame( jobq, 'q' ) ) {
147  LAPACKE_free( q_t );
148  }
149 exit_level_4:
150  if( LAPACKE_lsame( jobv, 'v' ) ) {
151  LAPACKE_free( v_t );
152  }
153 exit_level_3:
154  if( LAPACKE_lsame( jobu, 'u' ) ) {
155  LAPACKE_free( u_t );
156  }
157 exit_level_2:
158  LAPACKE_free( b_t );
159 exit_level_1:
160  LAPACKE_free( a_t );
161 exit_level_0:
162  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
163  LAPACKE_xerbla( "LAPACKE_sggsvp_work", info );
164  }
165  } else {
166  info = -1;
167  LAPACKE_xerbla( "LAPACKE_sggsvp_work", info );
168  }
169  return info;
170 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_sggsvp(char *jobu, char *jobv, char *jobq, lapack_int *m, lapack_int *p, lapack_int *n, float *a, lapack_int *lda, float *b, lapack_int *ldb, float *tola, float *tolb, lapack_int *k, lapack_int *l, float *u, lapack_int *ldu, float *v, lapack_int *ldv, float *q, lapack_int *ldq, lapack_int *iwork, float *tau, float *work, lapack_int *info)
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_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
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