LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dormlq()

lapack_int LAPACKE_dormlq ( int  matrix_layout,
char  side,
char  trans,
lapack_int  m,
lapack_int  n,
lapack_int  k,
const double *  a,
lapack_int  lda,
const double *  tau,
double *  c,
lapack_int  ldc 
)

Definition at line 35 of file lapacke_dormlq.c.

39{
40 lapack_int info = 0;
41 lapack_int lwork = -1;
42 double* work = NULL;
43 double work_query;
44 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
45 LAPACKE_xerbla( "LAPACKE_dormlq", -1 );
46 return -1;
47 }
48#ifndef LAPACK_DISABLE_NAN_CHECK
49 if( LAPACKE_get_nancheck() ) {
50 /* Optionally check input matrices for NaNs */
51 lapack_int r = LAPACKE_lsame( side, 'l' ) ? m : n;
52 if( LAPACKE_dge_nancheck( matrix_layout, k, r, a, lda ) ) {
53 return -7;
54 }
55 if( LAPACKE_dge_nancheck( matrix_layout, m, n, c, ldc ) ) {
56 return -10;
57 }
58 if( LAPACKE_d_nancheck( k, tau, 1 ) ) {
59 return -9;
60 }
61 }
62#endif
63 /* Query optimal working array(s) size */
64 info = LAPACKE_dormlq_work( matrix_layout, side, trans, m, n, k, a, lda, tau,
65 c, ldc, &work_query, lwork );
66 if( info != 0 ) {
67 goto exit_level_0;
68 }
69 lwork = (lapack_int)work_query;
70 /* Allocate memory for work arrays */
71 work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
72 if( work == NULL ) {
74 goto exit_level_0;
75 }
76 /* Call middle-level interface */
77 info = LAPACKE_dormlq_work( matrix_layout, side, trans, m, n, k, a, lda, tau,
78 c, ldc, work, lwork );
79 /* Release memory and exit */
80 LAPACKE_free( work );
81exit_level_0:
82 if( info == LAPACK_WORK_MEMORY_ERROR ) {
83 LAPACKE_xerbla( "LAPACKE_dormlq", info );
84 }
85 return info;
86}
#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
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
lapack_int LAPACKE_dormlq_work(int matrix_layout, char side, char trans, lapack_int m, lapack_int n, lapack_int k, const double *a, lapack_int lda, const double *tau, double *c, lapack_int ldc, double *work, lapack_int lwork)
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_d_nancheck(lapack_int n, const double *x, lapack_int incx)
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
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