LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dorgtr()

lapack_int LAPACKE_dorgtr ( int  matrix_layout,
char  uplo,
lapack_int  n,
double *  a,
lapack_int  lda,
const double *  tau 
)

Definition at line 35 of file lapacke_dorgtr.c.

37 {
38  lapack_int info = 0;
39  lapack_int lwork = -1;
40  double* work = NULL;
41  double work_query;
42  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
43  LAPACKE_xerbla( "LAPACKE_dorgtr", -1 );
44  return -1;
45  }
46 #ifndef LAPACK_DISABLE_NAN_CHECK
47  if( LAPACKE_get_nancheck() ) {
48  /* Optionally check input matrices for NaNs */
49  if( LAPACKE_dsy_nancheck( matrix_layout, uplo, n, a, lda ) ) {
50  return -4;
51  }
52  if( LAPACKE_d_nancheck( n-1, tau, 1 ) ) {
53  return -6;
54  }
55  }
56 #endif
57  /* Query optimal working array(s) size */
58  info = LAPACKE_dorgtr_work( matrix_layout, uplo, n, a, lda, tau, &work_query,
59  lwork );
60  if( info != 0 ) {
61  goto exit_level_0;
62  }
63  lwork = (lapack_int)work_query;
64  /* Allocate memory for work arrays */
65  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
66  if( work == NULL ) {
68  goto exit_level_0;
69  }
70  /* Call middle-level interface */
71  info = LAPACKE_dorgtr_work( matrix_layout, uplo, n, a, lda, tau, work,
72  lwork );
73  /* Release memory and exit */
74  LAPACKE_free( work );
75 exit_level_0:
76  if( info == LAPACK_WORK_MEMORY_ERROR ) {
77  LAPACKE_xerbla( "LAPACKE_dorgtr", info );
78  }
79  return info;
80 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
lapack_int LAPACKE_dorgtr_work(int matrix_layout, char uplo, lapack_int n, double *a, lapack_int lda, const double *tau, double *work, lapack_int lwork)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#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)
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
lapack_logical LAPACKE_dsy_nancheck(int matrix_layout, char uplo, lapack_int n, const double *a, lapack_int lda)
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