LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgeqrt3_work()

lapack_int LAPACKE_zgeqrt3_work ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
lapack_complex_double t,
lapack_int  ldt 
)

Definition at line 35 of file lapacke_zgeqrt3_work.c.

38 {
39  lapack_int info = 0;
40  if( matrix_layout == LAPACK_COL_MAJOR ) {
41  /* Call LAPACK function and adjust info */
42  LAPACK_zgeqrt3( &m, &n, a, &lda, t, &ldt, &info );
43  if( info < 0 ) {
44  info = info - 1;
45  }
46  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
47  lapack_int lda_t = MAX(1,m);
48  lapack_int ldt_t = MAX(1,n);
49  lapack_complex_double* a_t = NULL;
50  lapack_complex_double* t_t = NULL;
51  /* Check leading dimension(s) */
52  if( lda < n ) {
53  info = -5;
54  LAPACKE_xerbla( "LAPACKE_zgeqrt3_work", info );
55  return info;
56  }
57  if( ldt < n ) {
58  info = -7;
59  LAPACKE_xerbla( "LAPACKE_zgeqrt3_work", info );
60  return info;
61  }
62  /* Allocate memory for temporary array(s) */
63  a_t = (lapack_complex_double*)
64  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
65  if( a_t == NULL ) {
67  goto exit_level_0;
68  }
69  t_t = (lapack_complex_double*)
70  LAPACKE_malloc( sizeof(lapack_complex_double) * ldt_t * MAX(1,n) );
71  if( t_t == NULL ) {
73  goto exit_level_1;
74  }
75  /* Transpose input matrices */
76  LAPACKE_zge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
77  /* Call LAPACK function and adjust info */
78  LAPACK_zgeqrt3( &m, &n, a_t, &lda_t, t_t, &ldt_t, &info );
79  if( info < 0 ) {
80  info = info - 1;
81  }
82  /* Transpose output matrices */
83  LAPACKE_zge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
84  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, t_t, ldt_t, t, ldt );
85  /* Release memory and exit */
86  LAPACKE_free( t_t );
87 exit_level_1:
88  LAPACKE_free( a_t );
89 exit_level_0:
90  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
91  LAPACKE_xerbla( "LAPACKE_zgeqrt3_work", info );
92  }
93  } else {
94  info = -1;
95  LAPACKE_xerbla( "LAPACKE_zgeqrt3_work", info );
96  }
97  return info;
98 }
#define lapack_int
Definition: lapack.h:83
void LAPACK_zgeqrt3(lapack_int const *m, lapack_int const *n, lapack_complex_double *A, lapack_int const *lda, lapack_complex_double *T, lapack_int const *ldt, lapack_int *info)
#define lapack_complex_double
Definition: lapack.h:63
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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