LAPACK  3.10.1
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 35 of file lapacke_dpbequ_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_dpbequ( &uplo, &n, &kd, ab, &ldab, s, scond, amax, &info );
44  if( info < 0 ) {
45  info = info - 1;
46  }
47  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
48  lapack_int ldab_t = MAX(1,kd+1);
49  double* ab_t = NULL;
50  /* Check leading dimension(s) */
51  if( ldab < n ) {
52  info = -6;
53  LAPACKE_xerbla( "LAPACKE_dpbequ_work", info );
54  return info;
55  }
56  /* Allocate memory for temporary array(s) */
57  ab_t = (double*)LAPACKE_malloc( sizeof(double) * ldab_t * MAX(1,n) );
58  if( ab_t == NULL ) {
60  goto exit_level_0;
61  }
62  /* Transpose input matrices */
63  LAPACKE_dpb_trans( matrix_layout, uplo, n, kd, ab, ldab, ab_t, ldab_t );
64  /* Call LAPACK function and adjust info */
65  LAPACK_dpbequ( &uplo, &n, &kd, ab_t, &ldab_t, s, scond, amax, &info );
66  if( info < 0 ) {
67  info = info - 1;
68  }
69  /* Release memory and exit */
70  LAPACKE_free( ab_t );
71 exit_level_0:
72  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
73  LAPACKE_xerbla( "LAPACKE_dpbequ_work", info );
74  }
75  } else {
76  info = -1;
77  LAPACKE_xerbla( "LAPACKE_dpbequ_work", info );
78  }
79  return info;
80 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_dpbequ(...)
Definition: lapack.h:11917
#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)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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)
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