LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgeqr2()

lapack_int LAPACKE_zgeqr2 ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
lapack_complex_double tau 
)

Definition at line 36 of file lapacke_zgeqr2.c.

39 {
40  lapack_int info = 0;
41  lapack_complex_double* work = NULL;
42  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
43  LAPACKE_xerbla( "LAPACKE_zgeqr2", -1 );
44  return -1;
45  }
46 #ifndef LAPACK_DISABLE_NAN_CHECK
47  /* Optionally check input matrices for NaNs */
48  if( LAPACKE_zge_nancheck( matrix_layout, m, n, a, lda ) ) {
49  return -4;
50  }
51 #endif
52  /* Allocate memory for working array(s) */
53  work = (lapack_complex_double*)
54  LAPACKE_malloc( sizeof(lapack_complex_double) * MAX(1,n) );
55  if( work == NULL ) {
57  goto exit_level_0;
58  }
59  /* Call middle-level interface */
60  info = LAPACKE_zgeqr2_work( matrix_layout, m, n, a, lda, tau, work );
61  /* Release memory and exit */
62  LAPACKE_free( work );
63 exit_level_0:
64  if( info == LAPACK_WORK_MEMORY_ERROR ) {
65  LAPACKE_xerbla( "LAPACKE_zgeqr2", info );
66  }
67  return info;
68 }
#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_zgeqr2_work(int matrix_layout, lapack_int m, lapack_int n, lapack_complex_double *a, lapack_int lda, lapack_complex_double *tau, 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_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
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