LAPACK  3.8.0
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 36 of file lapacke_dggsvd.c.

43 {
44  lapack_int info = 0;
45  double* work = NULL;
46  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
47  LAPACKE_xerbla( "LAPACKE_dggsvd", -1 );
48  return -1;
49  }
50 #ifndef LAPACK_DISABLE_NAN_CHECK
51  if( LAPACKE_get_nancheck() ) {
52  /* Optionally check input matrices for NaNs */
53  if( LAPACKE_dge_nancheck( matrix_layout, m, n, a, lda ) ) {
54  return -10;
55  }
56  if( LAPACKE_dge_nancheck( matrix_layout, p, n, b, ldb ) ) {
57  return -12;
58  }
59  }
60 #endif
61  /* Allocate memory for working array(s) */
62  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,MAX3(3*n,m,p)+n) );
63  if( work == NULL ) {
65  goto exit_level_0;
66  }
67  /* Call middle-level interface */
68  info = LAPACKE_dggsvd_work( matrix_layout, jobu, jobv, jobq, m, n, p, k, l,
69  a, lda, b, ldb, alpha, beta, u, ldu, v, ldv, q,
70  ldq, work, iwork );
71  /* Release memory and exit */
72  LAPACKE_free( work );
73 exit_level_0:
74  if( info == LAPACK_WORK_MEMORY_ERROR ) {
75  LAPACKE_xerbla( "LAPACKE_dggsvd", info );
76  }
77  return info;
78 }
#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_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 MAX3(x, y, z)
Definition: lapacke_utils.h:53
#define MAX(x, y)
Definition: lapacke_utils.h:47
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
int LAPACKE_get_nancheck()
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