LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dggsvp3()

lapack_int LAPACKE_dggsvp3 ( int  matrix_layout,
char  jobu,
char  jobv,
char  jobq,
lapack_int  m,
lapack_int  p,
lapack_int  n,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
double  tola,
double  tolb,
lapack_int k,
lapack_int l,
double *  u,
lapack_int  ldu,
double *  v,
lapack_int  ldv,
double *  q,
lapack_int  ldq 
)

Definition at line 35 of file lapacke_dggsvp3.c.

41{
42 lapack_int info = 0;
43 lapack_int* iwork = NULL;
44 double* tau = NULL;
45 double* work = NULL;
46 lapack_int lwork = -1;
47 double work_query;
48 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49 LAPACKE_xerbla( "LAPACKE_dggsvp3", -1 );
50 return -1;
51 }
52#ifndef LAPACK_DISABLE_NAN_CHECK
53 if( LAPACKE_get_nancheck() ) {
54 /* Optionally check input matrices for NaNs */
55 if( LAPACKE_dge_nancheck( matrix_layout, m, n, a, lda ) ) {
56 return -8;
57 }
58 if( LAPACKE_dge_nancheck( matrix_layout, p, n, b, ldb ) ) {
59 return -10;
60 }
61 if( LAPACKE_d_nancheck( 1, &tola, 1 ) ) {
62 return -12;
63 }
64 if( LAPACKE_d_nancheck( 1, &tolb, 1 ) ) {
65 return -13;
66 }
67 }
68#endif
69 /* Query optimal size for working array */
70 info = LAPACKE_dggsvp3_work( matrix_layout, jobu, jobv, jobq, m, p, n,
71 a, lda, b, ldb, tola, tolb, k, l, u, ldu,
72 v, ldv, q, ldq, iwork, tau, &work_query,
73 lwork );
74 if( info != 0 )
75 goto exit_level_0;
76 lwork = work_query;
77 /* Allocate memory for working array(s) */
78 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
79 if( iwork == NULL ) {
81 goto exit_level_0;
82 }
83 tau = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
84 if( tau == NULL ) {
86 goto exit_level_1;
87 }
88 work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
89 if( work == NULL ) {
91 goto exit_level_2;
92 }
93 /* Call middle-level interface */
94 info = LAPACKE_dggsvp3_work( matrix_layout, jobu, jobv, jobq, m, p, n, a, lda,
95 b, ldb, tola, tolb, k, l, u, ldu, v, ldv, q,
96 ldq, iwork, tau, work, lwork );
97 /* Release memory and exit */
98 LAPACKE_free( work );
99exit_level_2:
100 LAPACKE_free( tau );
101exit_level_1:
102 LAPACKE_free( iwork );
103exit_level_0:
104 if( info == LAPACK_WORK_MEMORY_ERROR ) {
105 LAPACKE_xerbla( "LAPACKE_dggsvp3", info );
106 }
107 return info;
108}
#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_dggsvp3_work(int matrix_layout, char jobu, char jobv, char jobq, lapack_int m, lapack_int p, lapack_int n, double *a, lapack_int lda, double *b, lapack_int ldb, double tola, double tolb, lapack_int *k, lapack_int *l, double *u, lapack_int ldu, double *v, lapack_int ldv, double *q, lapack_int ldq, lapack_int *iwork, double *tau, double *work, lapack_int lwork)
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
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