LAPACK  3.8.0
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 36 of file lapacke_sgebak_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_sgebak( &job, &side, &n, &ilo, &ihi, scale, &m, v, &ldv, &info );
45  if( info < 0 ) {
46  info = info - 1;
47  }
48  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
49  lapack_int ldv_t = MAX(1,n);
50  float* v_t = NULL;
51  /* Check leading dimension(s) */
52  if( ldv < m ) {
53  info = -10;
54  LAPACKE_xerbla( "LAPACKE_sgebak_work", info );
55  return info;
56  }
57  /* Allocate memory for temporary array(s) */
58  v_t = (float*)LAPACKE_malloc( sizeof(float) * ldv_t * MAX(1,m) );
59  if( v_t == NULL ) {
61  goto exit_level_0;
62  }
63  /* Transpose input matrices */
64  LAPACKE_sge_trans( matrix_layout, n, m, v, ldv, v_t, ldv_t );
65  /* Call LAPACK function and adjust info */
66  LAPACK_sgebak( &job, &side, &n, &ilo, &ihi, scale, &m, v_t, &ldv_t,
67  &info );
68  if( info < 0 ) {
69  info = info - 1;
70  }
71  /* Transpose output matrices */
72  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, m, v_t, ldv_t, v, ldv );
73  /* Release memory and exit */
74  LAPACKE_free( v_t );
75 exit_level_0:
76  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
77  LAPACKE_xerbla( "LAPACKE_sgebak_work", info );
78  }
79  } else {
80  info = -1;
81  LAPACKE_xerbla( "LAPACKE_sgebak_work", info );
82  }
83  return info;
84 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
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:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACK_sgebak(char *job, char *side, lapack_int *n, lapack_int *ilo, lapack_int *ihi, const float *scale, lapack_int *m, float *v, lapack_int *ldv, lapack_int *info)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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