LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sggsvd3_work()

lapack_int LAPACKE_sggsvd3_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,
float *  a,
lapack_int  lda,
float *  b,
lapack_int  ldb,
float *  alpha,
float *  beta,
float *  u,
lapack_int  ldu,
float *  v,
lapack_int  ldv,
float *  q,
lapack_int  ldq,
float *  work,
lapack_int  lwork,
lapack_int iwork 
)

Definition at line 36 of file lapacke_sggsvd3_work.c.

45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_sggsvd3( &jobu, &jobv, &jobq, &m, &n, &p, k, l, a, &lda,
50  b, &ldb, alpha, beta, u, &ldu, v, &ldv, q, &ldq,
51  work, &lwork, iwork, &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  float* a_t = NULL;
62  float* b_t = NULL;
63  float* u_t = NULL;
64  float* v_t = NULL;
65  float* q_t = NULL;
66  /* Check leading dimension(s) */
67  if( lda < n ) {
68  info = -11;
69  LAPACKE_xerbla( "LAPACKE_sggsvd3_work", info );
70  return info;
71  }
72  if( ldb < n ) {
73  info = -13;
74  LAPACKE_xerbla( "LAPACKE_sggsvd3_work", info );
75  return info;
76  }
77  if( ldq < n ) {
78  info = -21;
79  LAPACKE_xerbla( "LAPACKE_sggsvd3_work", info );
80  return info;
81  }
82  if( ldu < m ) {
83  info = -17;
84  LAPACKE_xerbla( "LAPACKE_sggsvd3_work", info );
85  return info;
86  }
87  if( ldv < p ) {
88  info = -19;
89  LAPACKE_xerbla( "LAPACKE_sggsvd3_work", info );
90  return info;
91  }
92  /* Query optimal working array(s) size if requested */
93  if( lwork == -1 ) {
94  LAPACK_sggsvd3( &jobu, &jobv, &jobq, &m, &n, &p, k, l, a, &lda_t,
95  b, &ldb_t, alpha, beta, u, &ldu_t, v, &ldv_t,
96  q, &ldq_t, work, &lwork, iwork, &info );
97  return (info < 0) ? (info - 1) : info;
98  }
99 
100  /* Allocate memory for temporary array(s) */
101  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
102  if( a_t == NULL ) {
104  goto exit_level_0;
105  }
106  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,n) );
107  if( b_t == NULL ) {
109  goto exit_level_1;
110  }
111  if( LAPACKE_lsame( jobu, 'u' ) ) {
112  u_t = (float*)LAPACKE_malloc( sizeof(float) * ldu_t * MAX(1,m) );
113  if( u_t == NULL ) {
115  goto exit_level_2;
116  }
117  }
118  if( LAPACKE_lsame( jobv, 'v' ) ) {
119  v_t = (float*)LAPACKE_malloc( sizeof(float) * 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 = (float*)LAPACKE_malloc( sizeof(float) * ldq_t * MAX(1,n) );
127  if( q_t == NULL ) {
129  goto exit_level_4;
130  }
131  }
132  /* Transpose input matrices */
133  LAPACKE_sge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
134  LAPACKE_sge_trans( matrix_layout, p, n, b, ldb, b_t, ldb_t );
135  /* Call LAPACK function and adjust info */
136  LAPACK_sggsvd3( &jobu, &jobv, &jobq, &m, &n, &p, k, l, a_t, &lda_t, b_t,
137  &ldb_t, alpha, beta, u_t, &ldu_t, v_t, &ldv_t, q_t,
138  &ldq_t, work, &lwork, iwork, &info );
139  if( info < 0 ) {
140  info = info - 1;
141  }
142  /* Transpose output matrices */
143  LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
144  LAPACKE_sge_trans( LAPACK_COL_MAJOR, p, n, b_t, ldb_t, b, ldb );
145  if( LAPACKE_lsame( jobu, 'u' ) ) {
146  LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, m, u_t, ldu_t, u, ldu );
147  }
148  if( LAPACKE_lsame( jobv, 'v' ) ) {
149  LAPACKE_sge_trans( LAPACK_COL_MAJOR, p, p, v_t, ldv_t, v, ldv );
150  }
151  if( LAPACKE_lsame( jobq, 'q' ) ) {
152  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
153  }
154  /* Release memory and exit */
155  if( LAPACKE_lsame( jobq, 'q' ) ) {
156  LAPACKE_free( q_t );
157  }
158 exit_level_4:
159  if( LAPACKE_lsame( jobv, 'v' ) ) {
160  LAPACKE_free( v_t );
161  }
162 exit_level_3:
163  if( LAPACKE_lsame( jobu, 'u' ) ) {
164  LAPACKE_free( u_t );
165  }
166 exit_level_2:
167  LAPACKE_free( b_t );
168 exit_level_1:
169  LAPACKE_free( a_t );
170 exit_level_0:
171  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
172  LAPACKE_xerbla( "LAPACKE_sggsvd3_work", info );
173  }
174  } else {
175  info = -1;
176  LAPACKE_xerbla( "LAPACKE_sggsvd3_work", info );
177  }
178  return info;
179 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_sggsvd3(char *jobu, char *jobv, char *jobq, lapack_int *m, lapack_int *n, lapack_int *p, lapack_int *k, lapack_int *l, float *a, lapack_int *lda, float *b, lapack_int *ldb, float *alpha, float *beta, float *u, lapack_int *ldu, float *v, lapack_int *ldv, float *q, lapack_int *ldq, float *work, lapack_int *lwork, lapack_int *iwork, 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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