LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dggsvp()

lapack_int LAPACKE_dggsvp ( 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 36 of file lapacke_dggsvp.c.

42 {
43  lapack_int info = 0;
44  lapack_int* iwork = NULL;
45  double* tau = NULL;
46  double* work = NULL;
47  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48  LAPACKE_xerbla( "LAPACKE_dggsvp", -1 );
49  return -1;
50  }
51 #ifndef LAPACK_DISABLE_NAN_CHECK
52  /* Optionally check input matrices for NaNs */
53  if( LAPACKE_dge_nancheck( matrix_layout, m, n, a, lda ) ) {
54  return -8;
55  }
56  if( LAPACKE_dge_nancheck( matrix_layout, p, n, b, ldb ) ) {
57  return -10;
58  }
59  if( LAPACKE_d_nancheck( 1, &tola, 1 ) ) {
60  return -12;
61  }
62  if( LAPACKE_d_nancheck( 1, &tolb, 1 ) ) {
63  return -13;
64  }
65 #endif
66  /* Allocate memory for working array(s) */
67  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
68  if( iwork == NULL ) {
70  goto exit_level_0;
71  }
72  tau = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
73  if( tau == NULL ) {
75  goto exit_level_1;
76  }
77  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,MAX3(3*n,m,p)) );
78  if( work == NULL ) {
80  goto exit_level_2;
81  }
82  /* Call middle-level interface */
83  info = LAPACKE_dggsvp_work( matrix_layout, jobu, jobv, jobq, m, p, n, a, lda,
84  b, ldb, tola, tolb, k, l, u, ldu, v, ldv, q,
85  ldq, iwork, tau, work );
86  /* Release memory and exit */
87  LAPACKE_free( work );
88 exit_level_2:
89  LAPACKE_free( tau );
90 exit_level_1:
91  LAPACKE_free( iwork );
92 exit_level_0:
93  if( info == LAPACK_WORK_MEMORY_ERROR ) {
94  LAPACKE_xerbla( "LAPACKE_dggsvp", info );
95  }
96  return info;
97 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
lapack_int LAPACKE_dggsvp_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)
#define MAX3(x, y, z)
Definition: lapacke_utils.h:53
#define MAX(x, y)
Definition: lapacke_utils.h:47
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
Here is the call graph for this function: