LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgtcon()

lapack_int LAPACKE_dgtcon ( char  norm,
lapack_int  n,
const double *  dl,
const double *  d,
const double *  du,
const double *  du2,
const lapack_int ipiv,
double  anorm,
double *  rcond 
)

Definition at line 36 of file lapacke_dgtcon.c.

39 {
40  lapack_int info = 0;
41  lapack_int* iwork = NULL;
42  double* work = NULL;
43 #ifndef LAPACK_DISABLE_NAN_CHECK
44  if( LAPACKE_get_nancheck() ) {
45  /* Optionally check input matrices for NaNs */
46  if( LAPACKE_d_nancheck( 1, &anorm, 1 ) ) {
47  return -8;
48  }
49  if( LAPACKE_d_nancheck( n, d, 1 ) ) {
50  return -4;
51  }
52  if( LAPACKE_d_nancheck( n-1, dl, 1 ) ) {
53  return -3;
54  }
55  if( LAPACKE_d_nancheck( n-1, du, 1 ) ) {
56  return -5;
57  }
58  if( LAPACKE_d_nancheck( n-2, du2, 1 ) ) {
59  return -6;
60  }
61  }
62 #endif
63  /* Allocate memory for working array(s) */
64  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
65  if( iwork == NULL ) {
67  goto exit_level_0;
68  }
69  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
70  if( work == NULL ) {
72  goto exit_level_1;
73  }
74  /* Call middle-level interface */
75  info = LAPACKE_dgtcon_work( norm, n, dl, d, du, du2, ipiv, anorm, rcond,
76  work, iwork );
77  /* Release memory and exit */
78  LAPACKE_free( work );
79 exit_level_1:
80  LAPACKE_free( iwork );
81 exit_level_0:
82  if( info == LAPACK_WORK_MEMORY_ERROR ) {
83  LAPACKE_xerbla( "LAPACKE_dgtcon", info );
84  }
85  return info;
86 }
#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
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
lapack_int LAPACKE_dgtcon_work(char norm, lapack_int n, const double *dl, const double *d, const double *du, const double *du2, const lapack_int *ipiv, double anorm, double *rcond, double *work, lapack_int *iwork)
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
int LAPACKE_get_nancheck()
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