LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ 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_dtz_nancheck( matrix_layout, 'f', uplo, diag, 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 }
69exit_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: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
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)
lapack_logical LAPACKE_dtz_nancheck(int matrix_layout, char direct, char uplo, char diag, lapack_int m, lapack_int n, const double *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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