LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cunmqr_work()

lapack_int LAPACKE_cunmqr_work ( int  matrix_layout,
char  side,
char  trans,
lapack_int  m,
lapack_int  n,
lapack_int  k,
const lapack_complex_float a,
lapack_int  lda,
const lapack_complex_float tau,
lapack_complex_float c,
lapack_int  ldc,
lapack_complex_float work,
lapack_int  lwork 
)

Definition at line 36 of file lapacke_cunmqr_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_cunmqr( &side, &trans, &m, &n, &k, a, &lda, tau, c, &ldc, work,
47  &lwork, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int r = LAPACKE_lsame( side, 'l' ) ? m : n;
53  lapack_int lda_t = MAX(1,r);
54  lapack_int ldc_t = MAX(1,m);
55  lapack_complex_float* a_t = NULL;
56  lapack_complex_float* c_t = NULL;
57  /* Check leading dimension(s) */
58  if( lda < k ) {
59  info = -8;
60  LAPACKE_xerbla( "LAPACKE_cunmqr_work", info );
61  return info;
62  }
63  if( ldc < n ) {
64  info = -11;
65  LAPACKE_xerbla( "LAPACKE_cunmqr_work", info );
66  return info;
67  }
68  /* Query optimal working array(s) size if requested */
69  if( lwork == -1 ) {
70  LAPACK_cunmqr( &side, &trans, &m, &n, &k, a, &lda_t, tau, c, &ldc_t,
71  work, &lwork, &info );
72  return (info < 0) ? (info - 1) : info;
73  }
74  /* Allocate memory for temporary array(s) */
75  a_t = (lapack_complex_float*)
76  LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,k) );
77  if( a_t == NULL ) {
79  goto exit_level_0;
80  }
81  c_t = (lapack_complex_float*)
82  LAPACKE_malloc( sizeof(lapack_complex_float) * ldc_t * MAX(1,n) );
83  if( c_t == NULL ) {
85  goto exit_level_1;
86  }
87  /* Transpose input matrices */
88  LAPACKE_cge_trans( matrix_layout, r, k, a, lda, a_t, lda_t );
89  LAPACKE_cge_trans( matrix_layout, m, n, c, ldc, c_t, ldc_t );
90  /* Call LAPACK function and adjust info */
91  LAPACK_cunmqr( &side, &trans, &m, &n, &k, a_t, &lda_t, tau, c_t, &ldc_t,
92  work, &lwork, &info );
93  if( info < 0 ) {
94  info = info - 1;
95  }
96  /* Transpose output matrices */
97  LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
98  /* Release memory and exit */
99  LAPACKE_free( c_t );
100 exit_level_1:
101  LAPACKE_free( a_t );
102 exit_level_0:
103  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
104  LAPACKE_xerbla( "LAPACKE_cunmqr_work", info );
105  }
106  } else {
107  info = -1;
108  LAPACKE_xerbla( "LAPACKE_cunmqr_work", info );
109  }
110  return info;
111 }
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
void LAPACK_cunmqr(char *side, char *trans, lapack_int *m, lapack_int *n, lapack_int *k, const lapack_complex_float *a, lapack_int *lda, const lapack_complex_float *tau, lapack_complex_float *c, lapack_int *ldc, lapack_complex_float *work, lapack_int *lwork, lapack_int *info)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#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
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