LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cgeqrt2_work()

lapack_int LAPACKE_cgeqrt2_work ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_complex_float a,
lapack_int  lda,
lapack_complex_float t,
lapack_int  ldt 
)

Definition at line 36 of file lapacke_cgeqrt2_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_cgeqrt2( &m, &n, a, &lda, t, &ldt, &info );
44  if( info < 0 ) {
45  info = info - 1;
46  }
47  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
48  lapack_int lda_t = MAX(1,m);
49  lapack_int ldt_t = MAX(1,n);
50  lapack_complex_float* a_t = NULL;
51  lapack_complex_float* t_t = NULL;
52  /* Check leading dimension(s) */
53  if( lda < n ) {
54  info = -5;
55  LAPACKE_xerbla( "LAPACKE_cgeqrt2_work", info );
56  return info;
57  }
58  if( ldt < n ) {
59  info = -7;
60  LAPACKE_xerbla( "LAPACKE_cgeqrt2_work", info );
61  return info;
62  }
63  /* Allocate memory for temporary array(s) */
64  a_t = (lapack_complex_float*)
65  LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,n) );
66  if( a_t == NULL ) {
68  goto exit_level_0;
69  }
70  t_t = (lapack_complex_float*)
71  LAPACKE_malloc( sizeof(lapack_complex_float) * ldt_t * MAX(1,n) );
72  if( t_t == NULL ) {
74  goto exit_level_1;
75  }
76  /* Transpose input matrices */
77  LAPACKE_cge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
78  /* Call LAPACK function and adjust info */
79  LAPACK_cgeqrt2( &m, &n, a_t, &lda_t, t_t, &ldt_t, &info );
80  if( info < 0 ) {
81  info = info - 1;
82  }
83  /* Transpose output matrices */
84  LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
85  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, t_t, ldt_t, t, ldt );
86  /* Release memory and exit */
87  LAPACKE_free( t_t );
88 exit_level_1:
89  LAPACKE_free( a_t );
90 exit_level_0:
91  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
92  LAPACKE_xerbla( "LAPACKE_cgeqrt2_work", info );
93  }
94  } else {
95  info = -1;
96  LAPACKE_xerbla( "LAPACKE_cgeqrt2_work", info );
97  }
98  return info;
99 }
void LAPACKE_cge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_float
Definition: lapacke.h:74
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
void LAPACK_cgeqrt2(lapack_int *m, lapack_int *n, lapack_complex_float *a, lapack_int *lda, lapack_complex_float *t, lapack_int *ldt, lapack_int *info)
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