LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dorgqr_work()

lapack_int LAPACKE_dorgqr_work ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_int  k,
double *  a,
lapack_int  lda,
const double *  tau,
double *  work,
lapack_int  lwork 
)

Definition at line 35 of file lapacke_dorgqr_work.c.

39{
40 lapack_int info = 0;
41 if( matrix_layout == LAPACK_COL_MAJOR ) {
42 /* Call LAPACK function and adjust info */
43 LAPACK_dorgqr( &m, &n, &k, a, &lda, tau, work, &lwork, &info );
44 if( info < 0 ) {
45 info = info - 1;
46 }
47 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
48 lapack_int lda_t = MAX(1,m);
49 double* a_t = NULL;
50 /* Check leading dimension(s) */
51 if( lda < n ) {
52 info = -6;
53 LAPACKE_xerbla( "LAPACKE_dorgqr_work", info );
54 return info;
55 }
56 /* Query optimal working array(s) size if requested */
57 if( lwork == -1 ) {
58 LAPACK_dorgqr( &m, &n, &k, a, &lda_t, tau, work, &lwork, &info );
59 return (info < 0) ? (info - 1) : info;
60 }
61 /* Allocate memory for temporary array(s) */
62 a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
63 if( a_t == NULL ) {
65 goto exit_level_0;
66 }
67 /* Transpose input matrices */
68 LAPACKE_dge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
69 /* Call LAPACK function and adjust info */
70 LAPACK_dorgqr( &m, &n, &k, a_t, &lda_t, tau, work, &lwork, &info );
71 if( info < 0 ) {
72 info = info - 1;
73 }
74 /* Transpose output matrices */
75 LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
76 /* Release memory and exit */
77 LAPACKE_free( a_t );
78exit_level_0:
79 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
80 LAPACKE_xerbla( "LAPACKE_dorgqr_work", info );
81 }
82 } else {
83 info = -1;
84 LAPACKE_xerbla( "LAPACKE_dorgqr_work", info );
85 }
86 return info;
87}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_dorgqr
Definition: lapack.h:11430
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX(x, y)
Definition: lapacke_utils.h:46
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
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