LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgebak_work()

lapack_int LAPACKE_sgebak_work ( int  matrix_layout,
char  job,
char  side,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
const float *  scale,
lapack_int  m,
float *  v,
lapack_int  ldv 
)

Definition at line 35 of file lapacke_sgebak_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_sgebak( &job, &side, &n, &ilo, &ihi, scale, &m, v, &ldv, &info );
44  if( info < 0 ) {
45  info = info - 1;
46  }
47  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
48  lapack_int ldv_t = MAX(1,n);
49  float* v_t = NULL;
50  /* Check leading dimension(s) */
51  if( ldv < m ) {
52  info = -10;
53  LAPACKE_xerbla( "LAPACKE_sgebak_work", info );
54  return info;
55  }
56  /* Allocate memory for temporary array(s) */
57  v_t = (float*)LAPACKE_malloc( sizeof(float) * ldv_t * MAX(1,m) );
58  if( v_t == NULL ) {
60  goto exit_level_0;
61  }
62  /* Transpose input matrices */
63  LAPACKE_sge_trans( matrix_layout, n, m, v, ldv, v_t, ldv_t );
64  /* Call LAPACK function and adjust info */
65  LAPACK_sgebak( &job, &side, &n, &ilo, &ihi, scale, &m, v_t, &ldv_t,
66  &info );
67  if( info < 0 ) {
68  info = info - 1;
69  }
70  /* Transpose output matrices */
71  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, m, v_t, ldv_t, v, ldv );
72  /* Release memory and exit */
73  LAPACKE_free( v_t );
74 exit_level_0:
75  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
76  LAPACKE_xerbla( "LAPACKE_sgebak_work", info );
77  }
78  } else {
79  info = -1;
80  LAPACKE_xerbla( "LAPACKE_sgebak_work", info );
81  }
82  return info;
83 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_sgebak(...)
Definition: lapack.h:1318
#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)
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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