LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zupgtr()

lapack_int LAPACKE_zupgtr ( int  matrix_layout,
char  uplo,
lapack_int  n,
const lapack_complex_double ap,
const lapack_complex_double tau,
lapack_complex_double q,
lapack_int  ldq 
)

Definition at line 36 of file lapacke_zupgtr.c.

40 {
41  lapack_int info = 0;
42  lapack_complex_double* work = NULL;
43  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44  LAPACKE_xerbla( "LAPACKE_zupgtr", -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_zpp_nancheck( n, ap ) ) {
51  return -4;
52  }
53  if( LAPACKE_z_nancheck( n-1, tau, 1 ) ) {
54  return -5;
55  }
56  }
57 #endif
58  /* Allocate memory for working array(s) */
59  work = (lapack_complex_double*)
60  LAPACKE_malloc( sizeof(lapack_complex_double) * MAX(1,n-1) );
61  if( work == NULL ) {
63  goto exit_level_0;
64  }
65  /* Call middle-level interface */
66  info = LAPACKE_zupgtr_work( matrix_layout, uplo, n, ap, tau, q, ldq, work );
67  /* Release memory and exit */
68  LAPACKE_free( work );
69 exit_level_0:
70  if( info == LAPACK_WORK_MEMORY_ERROR ) {
71  LAPACKE_xerbla( "LAPACKE_zupgtr", info );
72  }
73  return info;
74 }
lapack_logical LAPACKE_z_nancheck(lapack_int n, const lapack_complex_double *x, lapack_int incx)
#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 lapack_complex_double
Definition: lapacke.h:90
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_int LAPACKE_zupgtr_work(int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *ap, const lapack_complex_double *tau, lapack_complex_double *q, lapack_int ldq, lapack_complex_double *work)
#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_logical LAPACKE_zpp_nancheck(lapack_int n, const lapack_complex_double *ap)
int LAPACKE_get_nancheck()
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