LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dggsvd3()

lapack_int LAPACKE_dggsvd3 ( int  matrix_layout,
char  jobu,
char  jobv,
char  jobq,
lapack_int  m,
lapack_int  n,
lapack_int  p,
lapack_int k,
lapack_int l,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
double *  alpha,
double *  beta,
double *  u,
lapack_int  ldu,
double *  v,
lapack_int  ldv,
double *  q,
lapack_int  ldq,
lapack_int iwork 
)

Definition at line 36 of file lapacke_dggsvd3.c.

43 {
44  lapack_int info = 0;
45  double* work = NULL;
46  lapack_int lwork = -1;
47  double work_query;
48  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49  LAPACKE_xerbla( "LAPACKE_dggsvd3", -1 );
50  return -1;
51  }
52 #ifndef LAPACK_DISABLE_NAN_CHECK
53  /* Optionally check input matrices for NaNs */
54  if( LAPACKE_dge_nancheck( matrix_layout, m, n, a, lda ) ) {
55  return -10;
56  }
57  if( LAPACKE_dge_nancheck( matrix_layout, p, n, b, ldb ) ) {
58  return -12;
59  }
60 #endif
61  info = LAPACKE_dggsvd3_work( matrix_layout, jobu, jobv, jobq, m, n, p, k, l,
62  a, lda, b, ldb, alpha, beta, u, ldu, v, ldv, q,
63  ldq, &work_query, lwork, iwork );
64  if( info != 0 )
65  goto exit_level_0;
66  lwork = work_query;
67  /* Allocate memory for working array(s) */
68  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
69  if( work == NULL ) {
71  goto exit_level_0;
72  }
73  /* Call middle-level interface */
74  info = LAPACKE_dggsvd3_work( matrix_layout, jobu, jobv, jobq, m, n, p, k, l,
75  a, lda, b, ldb, alpha, beta, u, ldu, v, ldv, q,
76  ldq, work, lwork, iwork );
77  /* Release memory and exit */
78  LAPACKE_free( work );
79 exit_level_0:
80  if( info == LAPACK_WORK_MEMORY_ERROR ) {
81  LAPACKE_xerbla( "LAPACKE_dggsvd3", info );
82  }
83  return info;
84 }
lapack_int LAPACKE_dggsvd3_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, double *a, lapack_int lda, double *b, lapack_int ldb, double *alpha, double *beta, double *u, lapack_int ldu, double *v, lapack_int ldv, double *q, lapack_int ldq, double *work, lapack_int lwork, lapack_int *iwork)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
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