LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgecon()

lapack_int LAPACKE_dgecon ( int  matrix_layout,
char  norm,
lapack_int  n,
const double *  a,
lapack_int  lda,
double  anorm,
double *  rcond 
)

Definition at line 36 of file lapacke_dgecon.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_dgecon", -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_dge_nancheck( matrix_layout, n, n, a, lda ) ) {
51  return -4;
52  }
53  if( LAPACKE_d_nancheck( 1, &anorm, 1 ) ) {
54  return -6;
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(1,4*n) );
65  if( work == NULL ) {
67  goto exit_level_1;
68  }
69  /* Call middle-level interface */
70  info = LAPACKE_dgecon_work( matrix_layout, norm, n, a, lda, anorm, rcond,
71  work, iwork );
72  /* Release memory and exit */
73  LAPACKE_free( work );
74 exit_level_1:
75  LAPACKE_free( iwork );
76 exit_level_0:
77  if( info == LAPACK_WORK_MEMORY_ERROR ) {
78  LAPACKE_xerbla( "LAPACKE_dgecon", info );
79  }
80  return info;
81 }
#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
lapack_int LAPACKE_dgecon_work(int matrix_layout, char norm, lapack_int n, const double *a, lapack_int lda, double anorm, double *rcond, double *work, lapack_int *iwork)
#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_d_nancheck(lapack_int n, const double *x, lapack_int incx)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
int LAPACKE_get_nancheck()
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