LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dbdsqr()

lapack_int LAPACKE_dbdsqr ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  ncvt,
lapack_int  nru,
lapack_int  ncc,
double *  d,
double *  e,
double *  vt,
lapack_int  ldvt,
double *  u,
lapack_int  ldu,
double *  c,
lapack_int  ldc 
)

Definition at line 36 of file lapacke_dbdsqr.c.

41 {
42  lapack_int info = 0;
43  double* work = NULL;
44  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
45  LAPACKE_xerbla( "LAPACKE_dbdsqr", -1 );
46  return -1;
47  }
48 #ifndef LAPACK_DISABLE_NAN_CHECK
49  if( LAPACKE_get_nancheck() ) {
50  /* Optionally check input matrices for NaNs */
51  if( ncc != 0 ) {
52  if( LAPACKE_dge_nancheck( matrix_layout, n, ncc, c, ldc ) ) {
53  return -13;
54  }
55  }
56  if( LAPACKE_d_nancheck( n, d, 1 ) ) {
57  return -7;
58  }
59  if( LAPACKE_d_nancheck( n-1, e, 1 ) ) {
60  return -8;
61  }
62  if( nru != 0 ) {
63  if( LAPACKE_dge_nancheck( matrix_layout, nru, n, u, ldu ) ) {
64  return -11;
65  }
66  }
67  if( ncvt != 0 ) {
68  if( LAPACKE_dge_nancheck( matrix_layout, n, ncvt, vt, ldvt ) ) {
69  return -9;
70  }
71  }
72  }
73 #endif
74  /* Allocate memory for working array(s) */
75  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,4*n) );
76  if( work == NULL ) {
78  goto exit_level_0;
79  }
80  /* Call middle-level interface */
81  info = LAPACKE_dbdsqr_work( matrix_layout, uplo, n, ncvt, nru, ncc, d, e, vt,
82  ldvt, u, ldu, c, ldc, work );
83  /* Release memory and exit */
84  LAPACKE_free( work );
85 exit_level_0:
86  if( info == LAPACK_WORK_MEMORY_ERROR ) {
87  LAPACKE_xerbla( "LAPACKE_dbdsqr", info );
88  }
89  return info;
90 }
lapack_int LAPACKE_dbdsqr_work(int matrix_layout, char uplo, lapack_int n, lapack_int ncvt, lapack_int nru, lapack_int ncc, double *d, double *e, double *vt, lapack_int ldvt, double *u, lapack_int ldu, double *c, lapack_int ldc, double *work)
#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
#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
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
#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()
Here is the call graph for this function: