LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgbequ_work()

lapack_int LAPACKE_dgbequ_work ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
const double *  ab,
lapack_int  ldab,
double *  r,
double *  c,
double *  rowcnd,
double *  colcnd,
double *  amax 
)

Definition at line 36 of file lapacke_dgbequ_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_dgbequ( &m, &n, &kl, &ku, ab, &ldab, r, c, rowcnd, colcnd, amax,
45  &info );
46  if( info < 0 ) {
47  info = info - 1;
48  }
49  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
50  lapack_int ldab_t = MAX(1,kl+ku+1);
51  double* ab_t = NULL;
52  /* Check leading dimension(s) */
53  if( ldab < n ) {
54  info = -7;
55  LAPACKE_xerbla( "LAPACKE_dgbequ_work", info );
56  return info;
57  }
58  /* Allocate memory for temporary array(s) */
59  ab_t = (double*)LAPACKE_malloc( sizeof(double) * ldab_t * MAX(1,n) );
60  if( ab_t == NULL ) {
62  goto exit_level_0;
63  }
64  /* Transpose input matrices */
65  LAPACKE_dgb_trans( matrix_layout, m, n, kl, ku, ab, ldab, ab_t, ldab_t );
66  /* Call LAPACK function and adjust info */
67  LAPACK_dgbequ( &m, &n, &kl, &ku, ab_t, &ldab_t, r, c, rowcnd, colcnd,
68  amax, &info );
69  if( info < 0 ) {
70  info = info - 1;
71  }
72  /* Release memory and exit */
73  LAPACKE_free( ab_t );
74 exit_level_0:
75  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
76  LAPACKE_xerbla( "LAPACKE_dgbequ_work", info );
77  }
78  } else {
79  info = -1;
80  LAPACKE_xerbla( "LAPACKE_dgbequ_work", info );
81  }
82  return info;
83 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
void LAPACKE_dgb_trans(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
void LAPACK_dgbequ(lapack_int *m, lapack_int *n, lapack_int *kl, lapack_int *ku, const double *ab, lapack_int *ldab, double *r, double *c, double *rowcnd, double *colcnd, double *amax, 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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