LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dggbal()

lapack_int LAPACKE_dggbal ( int  matrix_layout,
char  job,
lapack_int  n,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
lapack_int ilo,
lapack_int ihi,
double *  lscale,
double *  rscale 
)

Definition at line 36 of file lapacke_dggbal.c.

40 {
41  lapack_int info = 0;
42  /* Additional scalars declarations for work arrays */
43  lapack_int lwork;
44  double* work = NULL;
45  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46  LAPACKE_xerbla( "LAPACKE_dggbal", -1 );
47  return -1;
48  }
49 #ifndef LAPACK_DISABLE_NAN_CHECK
50  if( LAPACKE_get_nancheck() ) {
51  /* Optionally check input matrices for NaNs */
52  if( LAPACKE_lsame( job, 'p' ) || LAPACKE_lsame( job, 's' ) ||
53  LAPACKE_lsame( job, 'b' ) ) {
54  if( LAPACKE_dge_nancheck( matrix_layout, n, n, a, lda ) ) {
55  return -4;
56  }
57  }
58  if( LAPACKE_lsame( job, 'p' ) || LAPACKE_lsame( job, 's' ) ||
59  LAPACKE_lsame( job, 'b' ) ) {
60  if( LAPACKE_dge_nancheck( matrix_layout, n, n, b, ldb ) ) {
61  return -6;
62  }
63  }
64  }
65 #endif
66  /* Additional scalars initializations for work arrays */
67  if( LAPACKE_lsame( job, 's' ) || LAPACKE_lsame( job, 'b' ) ) {
68  lwork = MAX(1,6*n);
69  } else {
70  lwork = 1;
71  }
72  /* Allocate memory for working array(s) */
73  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
74  if( work == NULL ) {
76  goto exit_level_0;
77  }
78  /* Call middle-level interface */
79  info = LAPACKE_dggbal_work( matrix_layout, job, n, a, lda, b, ldb, ilo, ihi,
80  lscale, rscale, work );
81  /* Release memory and exit */
82  LAPACKE_free( work );
83 exit_level_0:
84  if( info == LAPACK_WORK_MEMORY_ERROR ) {
85  LAPACKE_xerbla( "LAPACKE_dggbal", info );
86  }
87  return info;
88 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define MAX(x, y)
Definition: lapacke_utils.h:47
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
lapack_int LAPACKE_dggbal_work(int matrix_layout, char job, lapack_int n, double *a, lapack_int lda, double *b, lapack_int ldb, lapack_int *ilo, lapack_int *ihi, double *lscale, double *rscale, double *work)
int LAPACKE_get_nancheck()
Here is the call graph for this function: