LAPACK  3.8.0
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 36 of file lapacke_dlantr.c.

39 {
40  lapack_int info = 0;
41  double res = 0.;
42  double* work = NULL;
43  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44  LAPACKE_xerbla( "LAPACKE_dlantr", -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_dtr_nancheck( matrix_layout, uplo, diag, MIN(m,n), a, lda ) ) {
51  return -7;
52  }
53  }
54 #endif
55  /* Allocate memory for working array(s) */
56  if( LAPACKE_lsame( norm, 'i' ) ) {
57  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,MAX(m,n)) );
58  if( work == NULL ) {
60  goto exit_level_0;
61  }
62  }
63  /* Call middle-level interface */
64  res = LAPACKE_dlantr_work( matrix_layout, norm, uplo, diag, m, n, a, lda,
65  work );
66  /* Release memory and exit */
67  if( LAPACKE_lsame( norm, 'i' ) ) {
68  LAPACKE_free( work );
69  }
70 exit_level_0:
71  if( info == LAPACK_WORK_MEMORY_ERROR ) {
72  LAPACKE_xerbla( "LAPACKE_dlantr", info );
73  }
74  return res;
75 }
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:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
lapack_logical LAPACKE_dtr_nancheck(int matrix_layout, char uplo, char diag, lapack_int n, const double *a, lapack_int lda)
#define MIN(x, y)
Definition: lapacke_utils.h:50
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#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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