LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dlange()

double LAPACKE_dlange ( int  matrix_layout,
char  norm,
lapack_int  m,
lapack_int  n,
const double *  a,
lapack_int  lda 
)

Definition at line 35 of file lapacke_dlange.c.

37 {
38  lapack_int info = 0;
39  double res = 0.;
40  double* work = NULL;
41  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
42  LAPACKE_xerbla( "LAPACKE_dlange", -1 );
43  return -1;
44  }
45 #ifndef LAPACK_DISABLE_NAN_CHECK
46  if( LAPACKE_get_nancheck() ) {
47  /* Optionally check input matrices for NaNs */
48  if( LAPACKE_dge_nancheck( matrix_layout, m, n, a, lda ) ) {
49  return -5;
50  }
51  }
52 #endif
53  /* Allocate memory for working array(s) */
54  if( LAPACKE_lsame( norm, 'i' ) ) {
55  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,m) );
56  if( work == NULL ) {
58  goto exit_level_0;
59  }
60  }
61  /* Call middle-level interface */
62  res = LAPACKE_dlange_work( matrix_layout, norm, m, n, a, lda, work );
63  /* Release memory and exit */
64  if( LAPACKE_lsame( norm, 'i' ) ) {
65  LAPACKE_free( work );
66  }
67 exit_level_0:
68  if( info == LAPACK_WORK_MEMORY_ERROR ) {
69  LAPACKE_xerbla( "LAPACKE_dlange", info );
70  }
71  return res;
72 }
#define lapack_int
Definition: lapack.h:83
#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
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
double LAPACKE_dlange_work(int matrix_layout, char norm, lapack_int m, lapack_int n, const double *a, lapack_int lda, double *work)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
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