LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dggsvd()

lapack_int LAPACKE_dggsvd ( 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 35 of file lapacke_dggsvd.c.

42 {
43  lapack_int info = 0;
44  double* work = NULL;
45  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46  LAPACKE_xerbla( "LAPACKE_dggsvd", -1 );
47  return -1;
48  }
49 #ifndef LAPACK_DISABLE_NAN_CHECK
50  if( LAPACKE_get_nancheck() ) {
51  /* Optionally check input matrices for NaNs */
52  if( LAPACKE_dge_nancheck( matrix_layout, m, n, a, lda ) ) {
53  return -10;
54  }
55  if( LAPACKE_dge_nancheck( matrix_layout, p, n, b, ldb ) ) {
56  return -12;
57  }
58  }
59 #endif
60  /* Allocate memory for working array(s) */
61  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,MAX3(3*n,m,p)+n) );
62  if( work == NULL ) {
64  goto exit_level_0;
65  }
66  /* Call middle-level interface */
67  info = LAPACKE_dggsvd_work( matrix_layout, jobu, jobv, jobq, m, n, p, k, l,
68  a, lda, b, ldb, alpha, beta, u, ldu, v, ldv, q,
69  ldq, work, iwork );
70  /* Release memory and exit */
71  LAPACKE_free( work );
72 exit_level_0:
73  if( info == LAPACK_WORK_MEMORY_ERROR ) {
74  LAPACKE_xerbla( "LAPACKE_dggsvd", info );
75  }
76  return info;
77 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
lapack_int LAPACKE_dggsvd_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 *iwork)
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX3(x, y, z)
Definition: lapacke_utils.h:52
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
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