LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dopgtr()

lapack_int LAPACKE_dopgtr ( int  matrix_layout,
char  uplo,
lapack_int  n,
const double *  ap,
const double *  tau,
double *  q,
lapack_int  ldq 
)

Definition at line 36 of file lapacke_dopgtr.c.

39 {
40  lapack_int info = 0;
41  double* work = NULL;
42  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
43  LAPACKE_xerbla( "LAPACKE_dopgtr", -1 );
44  return -1;
45  }
46 #ifndef LAPACK_DISABLE_NAN_CHECK
47  /* Optionally check input matrices for NaNs */
48  if( LAPACKE_dsp_nancheck( n, ap ) ) {
49  return -4;
50  }
51  if( LAPACKE_d_nancheck( n-1, tau, 1 ) ) {
52  return -5;
53  }
54 #endif
55  /* Allocate memory for working array(s) */
56  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n-1) );
57  if( work == NULL ) {
59  goto exit_level_0;
60  }
61  /* Call middle-level interface */
62  info = LAPACKE_dopgtr_work( matrix_layout, uplo, n, ap, tau, q, ldq, work );
63  /* Release memory and exit */
64  LAPACKE_free( work );
65 exit_level_0:
66  if( info == LAPACK_WORK_MEMORY_ERROR ) {
67  LAPACKE_xerbla( "LAPACKE_dopgtr", info );
68  }
69  return info;
70 }
#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
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
lapack_int LAPACKE_dopgtr_work(int matrix_layout, char uplo, lapack_int n, const double *ap, const double *tau, double *q, lapack_int ldq, double *work)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_dsp_nancheck(lapack_int n, const double *ap)
#define lapack_int
Definition: lapacke.h:47
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