LAPACK  3.8.0
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 36 of file lapacke_dorgtr.c.

38 {
39  lapack_int info = 0;
40  lapack_int lwork = -1;
41  double* work = NULL;
42  double work_query;
43  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44  LAPACKE_xerbla( "LAPACKE_dorgtr", -1 );
45  return -1;
46  }
47 #ifndef LAPACK_DISABLE_NAN_CHECK
48  if( LAPACKE_get_nancheck() ) {
49  /* Optionally check input matrices for NaNs */
50  if( LAPACKE_dge_nancheck( matrix_layout, n, n, a, lda ) ) {
51  return -4;
52  }
53  if( LAPACKE_d_nancheck( n-1, tau, 1 ) ) {
54  return -6;
55  }
56  }
57 #endif
58  /* Query optimal working array(s) size */
59  info = LAPACKE_dorgtr_work( matrix_layout, uplo, n, a, lda, tau, &work_query,
60  lwork );
61  if( info != 0 ) {
62  goto exit_level_0;
63  }
64  lwork = (lapack_int)work_query;
65  /* Allocate memory for work arrays */
66  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
67  if( work == NULL ) {
69  goto exit_level_0;
70  }
71  /* Call middle-level interface */
72  info = LAPACKE_dorgtr_work( matrix_layout, uplo, n, a, lda, tau, work,
73  lwork );
74  /* Release memory and exit */
75  LAPACKE_free( work );
76 exit_level_0:
77  if( info == LAPACK_WORK_MEMORY_ERROR ) {
78  LAPACKE_xerbla( "LAPACKE_dorgtr", info );
79  }
80  return info;
81 }
#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
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
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)
int LAPACKE_get_nancheck()
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