LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dgbcon()

lapack_int LAPACKE_dgbcon ( int  matrix_layout,
char  norm,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
const double *  ab,
lapack_int  ldab,
const lapack_int ipiv,
double  anorm,
double *  rcond 
)

Definition at line 35 of file lapacke_dgbcon.c.

39{
40 lapack_int info = 0;
41 lapack_int* iwork = NULL;
42 double* work = NULL;
43 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44 LAPACKE_xerbla( "LAPACKE_dgbcon", -1 );
45 return -1;
46 }
47#ifndef LAPACK_DISABLE_NAN_CHECK
48 if( LAPACKE_get_nancheck() ) {
49 /* Optionally check input matrices for NaNs */
50 if( LAPACKE_dgb_nancheck( matrix_layout, n, n, kl, kl+ku, ab, ldab ) ) {
51 return -6;
52 }
53 if( LAPACKE_d_nancheck( 1, &anorm, 1 ) ) {
54 return -9;
55 }
56 }
57#endif
58 /* Allocate memory for working array(s) */
59 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
60 if( iwork == NULL ) {
62 goto exit_level_0;
63 }
64 work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n) );
65 if( work == NULL ) {
67 goto exit_level_1;
68 }
69 /* Call middle-level interface */
70 info = LAPACKE_dgbcon_work( matrix_layout, norm, n, kl, ku, ab, ldab, ipiv,
71 anorm, rcond, work, iwork );
72 /* Release memory and exit */
73 LAPACKE_free( work );
74exit_level_1:
75 LAPACKE_free( iwork );
76exit_level_0:
77 if( info == LAPACK_WORK_MEMORY_ERROR ) {
78 LAPACKE_xerbla( "LAPACKE_dgbcon", info );
79 }
80 return info;
81}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
lapack_int LAPACKE_dgbcon_work(int matrix_layout, char norm, lapack_int n, lapack_int kl, lapack_int ku, const double *ab, lapack_int ldab, const lapack_int *ipiv, double anorm, double *rcond, double *work, lapack_int *iwork)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_logical LAPACKE_dgb_nancheck(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const double *ab, lapack_int ldab)
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