LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dlantr()

double LAPACKE_dlantr ( int  matrix_layout,
char  norm,
char  uplo,
char  diag,
lapack_int  m,
lapack_int  n,
const double *  a,
lapack_int  lda 
)

Definition at line 35 of file lapacke_dlantr.c.

38 {
39  lapack_int info = 0;
40  double res = 0.;
41  double* work = NULL;
42  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
43  LAPACKE_xerbla( "LAPACKE_dlantr", -1 );
44  return -1;
45  }
46 #ifndef LAPACK_DISABLE_NAN_CHECK
47  if( LAPACKE_get_nancheck() ) {
48  /* Optionally check input matrices for NaNs */
49  if( LAPACKE_dtr_nancheck( matrix_layout, uplo, diag, MIN(m,n), a, lda ) ) {
50  return -7;
51  }
52  }
53 #endif
54  /* Allocate memory for working array(s) */
55  if( LAPACKE_lsame( norm, 'i' ) ) {
56  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,MAX(m,n)) );
57  if( work == NULL ) {
59  goto exit_level_0;
60  }
61  }
62  /* Call middle-level interface */
63  res = LAPACKE_dlantr_work( matrix_layout, norm, uplo, diag, m, n, a, lda,
64  work );
65  /* Release memory and exit */
66  if( LAPACKE_lsame( norm, 'i' ) ) {
67  LAPACKE_free( work );
68  }
69 exit_level_0:
70  if( info == LAPACK_WORK_MEMORY_ERROR ) {
71  LAPACKE_xerbla( "LAPACKE_dlantr", info );
72  }
73  return res;
74 }
#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
double LAPACKE_dlantr_work(int matrix_layout, char norm, char uplo, char diag, lapack_int m, lapack_int n, const double *a, lapack_int lda, double *work)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MIN(x, y)
Definition: lapacke_utils.h:49
lapack_logical LAPACKE_dtr_nancheck(int matrix_layout, char uplo, char diag, lapack_int n, const double *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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