LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cgelq_work()

lapack_int LAPACKE_cgelq_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 
)

Definition at line 35 of file lapacke_cgelq_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_cgelq( &m, &n, a, &lda, t, &tsize, work, &lwork, &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_complex_float* a_t = NULL;
50  /* Check leading dimension(s) */
51  if( lda < n ) {
52  info = -5;
53  LAPACKE_xerbla( "LAPACKE_cgelq_work", info );
54  return info;
55  }
56  /* Query optimal working array(s) size if requested */
57  if( tsize == -1 || tsize == -2 || lwork == -1 || lwork == -2) {
58  LAPACK_cgelq( &m, &n, a, &lda_t, t, &tsize, work, &lwork, &info );
59  return (info < 0) ? (info - 1) : info;
60  }
61  /* Allocate memory for temporary array(s) */
62  a_t = (lapack_complex_float*)LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,n) );
63  if( a_t == NULL ) {
65  goto exit_level_0;
66  }
67  /* Transpose input matrices */
68  LAPACKE_cge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
69  /* Call LAPACK function and adjust info */
70  LAPACK_cgelq( &m, &n, a_t, &lda_t, t, &tsize, work, &lwork, &info );
71  if( info < 0 ) {
72  info = info - 1;
73  }
74  /* Transpose output matrices */
75  LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
76  /* Release memory and exit */
77  LAPACKE_free( a_t );
78 exit_level_0:
79  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
80  LAPACKE_xerbla( "LAPACKE_cgelq_work", info );
81  }
82  } else {
83  info = -1;
84  LAPACKE_xerbla( "LAPACKE_cgelq_work", info );
85  }
86  return info;
87 }
#define lapack_int
Definition: lapack.h:83
void LAPACK_cgelq(lapack_int const *m, lapack_int const *n, lapack_complex_float *A, lapack_int const *lda, lapack_complex_float *T, lapack_int const *tsize, lapack_complex_float *work, lapack_int const *lwork, lapack_int *info)
#define lapack_complex_float
Definition: lapack.h:45
#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)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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)
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