LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cgeqr()

lapack_int LAPACKE_cgeqr ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_complex_float a,
lapack_int  lda,
lapack_complex_float t,
lapack_int  tsize 
)

Definition at line 35 of file lapacke_cgeqr.c.

38 {
39  lapack_int info = 0;
40  lapack_int lwork = -1;
41  lapack_complex_float* work = NULL;
42  lapack_complex_float work_query;
43  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44  LAPACKE_xerbla( "LAPACKE_cgeqr", -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_cge_nancheck( matrix_layout, m, n, a, lda ) ) {
51  return -4;
52  }
53  }
54 #endif
55  /* Query optimal working array(s) size */
56  info = LAPACKE_cgeqr_work( matrix_layout, m, n, a, lda, t, tsize, &work_query,
57  lwork );
58  if( info != 0 ) {
59  goto exit_level_0;
60  }
61  if( tsize == -1 || tsize == -2 ) {
62  goto exit_level_0;
63  }
64  lwork = LAPACK_C2INT( work_query );
65  /* Allocate memory for work arrays */
66  work = (lapack_complex_float*)
67  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
68  if( work == NULL ) {
70  goto exit_level_0;
71  }
72  /* Call middle-level interface */
73  info = LAPACKE_cgeqr_work( matrix_layout, m, n, a, lda, t, tsize, work, 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_cgeqr", info );
79  }
80  return info;
81 }
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_float
Definition: lapack.h:45
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACK_C2INT(x)
Definition: lapacke.h:49
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
lapack_int LAPACKE_cgeqr_work(int matrix_layout, lapack_int m, lapack_int n, lapack_complex_float *a, lapack_int lda, lapack_complex_float *t, lapack_int tsize, lapack_complex_float *work, lapack_int lwork)
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_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
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