LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dggsvd()

lapack_int LAPACKE_dggsvd ( int  matrix_layout,
char  jobu,
char  jobv,
char  jobq,
lapack_int  m,
lapack_int  n,
lapack_int  p,
lapack_int k,
lapack_int l,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
double *  alpha,
double *  beta,
double *  u,
lapack_int  ldu,
double *  v,
lapack_int  ldv,
double *  q,
lapack_int  ldq,
lapack_int iwork 
)

Definition at line 35 of file lapacke_dggsvd.c.

42{
43 lapack_int info = 0;
44 double* work = NULL;
45 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46 LAPACKE_xerbla( "LAPACKE_dggsvd", -1 );
47 return -1;
48 }
49#ifndef LAPACK_DISABLE_NAN_CHECK
50 if( LAPACKE_get_nancheck() ) {
51 /* Optionally check input matrices for NaNs */
52 if( LAPACKE_dge_nancheck( matrix_layout, m, n, a, lda ) ) {
53 return -10;
54 }
55 if( LAPACKE_dge_nancheck( matrix_layout, p, n, b, ldb ) ) {
56 return -12;
57 }
58 }
59#endif
60 /* Allocate memory for working array(s) */
61 work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,MAX3(3*n,m,p)+n) );
62 if( work == NULL ) {
64 goto exit_level_0;
65 }
66 /* Call middle-level interface */
67 info = LAPACKE_dggsvd_work( matrix_layout, jobu, jobv, jobq, m, n, p, k, l,
68 a, lda, b, ldb, alpha, beta, u, ldu, v, ldv, q,
69 ldq, work, iwork );
70 /* Release memory and exit */
71 LAPACKE_free( work );
72exit_level_0:
73 if( info == LAPACK_WORK_MEMORY_ERROR ) {
74 LAPACKE_xerbla( "LAPACKE_dggsvd", info );
75 }
76 return info;
77}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
lapack_int LAPACKE_dggsvd_work(int matrix_layout, char jobu, char jobv, char jobq, lapack_int m, lapack_int n, lapack_int p, lapack_int *k, lapack_int *l, double *a, lapack_int lda, double *b, lapack_int ldb, double *alpha, double *beta, double *u, lapack_int ldu, double *v, lapack_int ldv, double *q, lapack_int ldq, double *work, lapack_int *iwork)
#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
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX3(x, y, z)
Definition: lapacke_utils.h:52
#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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