LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dpbequ_work()

lapack_int LAPACKE_dpbequ_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  kd,
const double *  ab,
lapack_int  ldab,
double *  s,
double *  scond,
double *  amax 
)

Definition at line 36 of file lapacke_dpbequ_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_dpbequ( &uplo, &n, &kd, ab, &ldab, s, scond, amax, &info );
45  if( info < 0 ) {
46  info = info - 1;
47  }
48  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
49  lapack_int ldab_t = MAX(1,kd+1);
50  double* ab_t = NULL;
51  /* Check leading dimension(s) */
52  if( ldab < n ) {
53  info = -6;
54  LAPACKE_xerbla( "LAPACKE_dpbequ_work", info );
55  return info;
56  }
57  /* Allocate memory for temporary array(s) */
58  ab_t = (double*)LAPACKE_malloc( sizeof(double) * ldab_t * MAX(1,n) );
59  if( ab_t == NULL ) {
61  goto exit_level_0;
62  }
63  /* Transpose input matrices */
64  LAPACKE_dpb_trans( matrix_layout, uplo, n, kd, ab, ldab, ab_t, ldab_t );
65  /* Call LAPACK function and adjust info */
66  LAPACK_dpbequ( &uplo, &n, &kd, ab_t, &ldab_t, s, scond, amax, &info );
67  if( info < 0 ) {
68  info = info - 1;
69  }
70  /* Release memory and exit */
71  LAPACKE_free( ab_t );
72 exit_level_0:
73  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
74  LAPACKE_xerbla( "LAPACKE_dpbequ_work", info );
75  }
76  } else {
77  info = -1;
78  LAPACKE_xerbla( "LAPACKE_dpbequ_work", info );
79  }
80  return info;
81 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_dpbequ(char *uplo, lapack_int *n, lapack_int *kd, const double *ab, lapack_int *ldab, double *s, double *scond, double *amax, lapack_int *info)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
void LAPACKE_dpb_trans(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#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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