LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cgemqr_work()

lapack_int LAPACKE_cgemqr_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 t,
lapack_int  tsize,
lapack_complex_float c,
lapack_int  ldc,
lapack_complex_float work,
lapack_int  lwork 
)

Definition at line 36 of file lapacke_cgemqr_work.c.

42 {
43  lapack_int info = 0;
44  lapack_int r;
45  lapack_int lda_t, ldc_t;
46  lapack_complex_float *a_t = NULL, *c_t = NULL;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_cgemqr( &side, &trans, &m, &n, &k, a, &lda, t, &tsize, c, &ldc,
50  work, &lwork, &info );
51  if( info < 0 ) {
52  info = info - 1;
53  }
54  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
55  r = LAPACKE_lsame( side, 'l' ) ? m : n;
56  lda_t = MAX(1,r);
57  ldc_t = MAX(1,m);
58  /* Check leading dimension(s) */
59  if( lda < k ) {
60  info = -8;
61  LAPACKE_xerbla( "LAPACKE_cgemqr_work", info );
62  return info;
63  }
64  if( ldc < n ) {
65  info = -11;
66  LAPACKE_xerbla( "LAPACKE_cgemqr_work", info );
67  return info;
68  }
69  /* Query optimal working array(s) size if requested */
70  if( lwork == -1 ) {
71  LAPACK_cgemqr( &side, &trans, &m, &n, &k, a, &lda_t, t, &tsize,
72  c, &ldc_t, work, &lwork, &info );
73  return (info < 0) ? (info - 1) : info;
74  }
75  /* Allocate memory for temporary array(s) */
76  a_t = (lapack_complex_float*)
77  LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,k) );
78  if( a_t == NULL ) {
80  goto exit_level_0;
81  }
82  c_t = (lapack_complex_float*)
83  LAPACKE_malloc( sizeof(lapack_complex_float) * ldc_t * MAX(1,n) );
84  if( c_t == NULL ) {
86  goto exit_level_1;
87  }
88  /* Transpose input matrices */
89  LAPACKE_cge_trans( matrix_layout, r, k, a, lda, a_t, lda_t );
90  LAPACKE_cge_trans( matrix_layout, m, n, c, ldc, c_t, ldc_t );
91  /* Call LAPACK function and adjust info */
92  LAPACK_cgemqr( &side, &trans, &m, &n, &k, a_t, &lda_t, t, &tsize,
93  c_t, &ldc_t, work, &lwork, &info );
94  if( info < 0 ) {
95  info = info - 1;
96  }
97  /* Transpose output matrices */
98  LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
99  /* Release memory and exit */
100  LAPACKE_free( c_t );
101 exit_level_1:
102  LAPACKE_free( a_t );
103 exit_level_0:
104  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
105  LAPACKE_xerbla( "LAPACKE_cgemqr_work", info );
106  }
107  } else {
108  info = -1;
109  LAPACKE_xerbla( "LAPACKE_cgemqr_work", info );
110  }
111  return info;
112 }
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
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
void LAPACK_cgemqr(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 *t, lapack_int *tsize, lapack_complex_float *c, lapack_int *ldc, lapack_complex_float *work, lapack_int *lwork, lapack_int *info)
#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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