LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sormbr_work()

lapack_int LAPACKE_sormbr_work ( int  matrix_layout,
char  vect,
char  side,
char  trans,
lapack_int  m,
lapack_int  n,
lapack_int  k,
const float *  a,
lapack_int  lda,
const float *  tau,
float *  c,
lapack_int  ldc,
float *  work,
lapack_int  lwork 
)

Definition at line 35 of file lapacke_sormbr_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_sormbr( &vect, &side, &trans, &m, &n, &k, a, &lda, tau, c, &ldc,
45  work, &lwork, &info );
46  if( info < 0 ) {
47  info = info - 1;
48  }
49  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
50  lapack_int nq = LAPACKE_lsame( side, 'l' ) ? m : n;
51  lapack_int ar = LAPACKE_lsame( vect, 'q' ) ? nq : MIN(nq,k);
52  lapack_int ac = LAPACKE_lsame( vect, 'q' ) ? MIN(nq,k) : nq;
53  lapack_int lda_t = MAX(1,ar);
54  lapack_int ldc_t = MAX(1,m);
55  float *a_t = NULL;
56  float *c_t = NULL;
57  /* Check leading dimension(s) */
58  if( lda < ac ) {
59  info = -9;
60  LAPACKE_xerbla( "LAPACKE_sormbr_work", info );
61  return info;
62  }
63  if( ldc < n ) {
64  info = -12;
65  LAPACKE_xerbla( "LAPACKE_sormbr_work", info );
66  return info;
67  }
68  /* Query optimal working array(s) size if requested */
69  if( lwork == -1 ) {
70  LAPACK_sormbr( &vect, &side, &trans, &m, &n, &k, a, &lda_t, tau, c,
71  &ldc_t, work, &lwork, &info );
72  return (info < 0) ? (info - 1) : info;
73  }
74  /* Allocate memory for temporary array(s) */
75  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,ac) );
76  if( a_t == NULL ) {
78  goto exit_level_0;
79  }
80  c_t = (float*)LAPACKE_malloc( sizeof(float) * ldc_t * MAX(1,n) );
81  if( c_t == NULL ) {
83  goto exit_level_1;
84  }
85  /* Transpose input matrices */
86  LAPACKE_sge_trans( matrix_layout, ar, ac, a, lda, a_t, lda_t );
87  LAPACKE_sge_trans( matrix_layout, m, n, c, ldc, c_t, ldc_t );
88  /* Call LAPACK function and adjust info */
89  LAPACK_sormbr( &vect, &side, &trans, &m, &n, &k, a_t, &lda_t, tau, c_t,
90  &ldc_t, work, &lwork, &info );
91  if( info < 0 ) {
92  info = info - 1;
93  }
94  /* Transpose output matrices */
95  LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
96  /* Release memory and exit */
97  LAPACKE_free( c_t );
98 exit_level_1:
99  LAPACKE_free( a_t );
100 exit_level_0:
101  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
102  LAPACKE_xerbla( "LAPACKE_sormbr_work", info );
103  }
104  } else {
105  info = -1;
106  LAPACKE_xerbla( "LAPACKE_sormbr_work", info );
107  }
108  return info;
109 }
#define LAPACK_sormbr(...)
Definition: lapack.h:11533
#define lapack_int
Definition: lapack.h:83
#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
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MIN(x, y)
Definition: lapacke_utils.h:49
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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