LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zggsvd3()

lapack_int LAPACKE_zggsvd3 ( int  matrix_layout,
char  jobu,
char  jobv,
char  jobq,
lapack_int  m,
lapack_int  n,
lapack_int  p,
lapack_int k,
lapack_int l,
lapack_complex_double a,
lapack_int  lda,
lapack_complex_double b,
lapack_int  ldb,
double *  alpha,
double *  beta,
lapack_complex_double u,
lapack_int  ldu,
lapack_complex_double v,
lapack_int  ldv,
lapack_complex_double q,
lapack_int  ldq,
lapack_int iwork 
)

Definition at line 36 of file lapacke_zggsvd3.c.

46 {
47  lapack_int info = 0;
48  double* rwork = NULL;
49  lapack_int lwork = -1;
50  lapack_complex_double* work = NULL;
51  lapack_complex_double work_query;
52  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
53  LAPACKE_xerbla( "LAPACKE_zggsvd3", -1 );
54  return -1;
55  }
56 #ifndef LAPACK_DISABLE_NAN_CHECK
57  if( LAPACKE_get_nancheck() ) {
58  /* Optionally check input matrices for NaNs */
59  if( LAPACKE_zge_nancheck( matrix_layout, m, n, a, lda ) ) {
60  return -10;
61  }
62  if( LAPACKE_zge_nancheck( matrix_layout, p, n, b, ldb ) ) {
63  return -12;
64  }
65  }
66 #endif
67  /* Query optimal size for working array */
68  info = LAPACKE_zggsvd3_work( matrix_layout, jobu, jobv, jobq, m, n, p, k, l,
69  a, lda, b, ldb, alpha, beta, u, ldu, v, ldv, q,
70  ldq, &work_query, lwork, rwork, iwork );
71  if( info != 0 )
72  goto exit_level_0;
73  lwork = LAPACK_Z2INT( work_query );
74  /* Allocate memory for working array(s) */
75  rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
76  if( rwork == NULL ) {
78  goto exit_level_0;
79  }
80  work = (lapack_complex_double*)
81  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
82  if( work == NULL ) {
84  goto exit_level_1;
85  }
86  /* Call middle-level interface */
87  info = LAPACKE_zggsvd3_work( matrix_layout, jobu, jobv, jobq, m, n, p, k, l,
88  a, lda, b, ldb, alpha, beta, u, ldu, v, ldv, q,
89  ldq, work, lwork, rwork, iwork );
90  /* Release memory and exit */
91  LAPACKE_free( work );
92 exit_level_1:
93  LAPACKE_free( rwork );
94 exit_level_0:
95  if( info == LAPACK_WORK_MEMORY_ERROR ) {
96  LAPACKE_xerbla( "LAPACKE_zggsvd3", info );
97  }
98  return info;
99 }
#define LAPACK_Z2INT(x)
Definition: lapacke.h:117
#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
#define lapack_complex_double
Definition: lapacke.h:90
#define MAX(x, y)
Definition: lapacke_utils.h:47
lapack_int LAPACKE_zggsvd3_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, lapack_complex_double *a, lapack_int lda, lapack_complex_double *b, lapack_int ldb, double *alpha, double *beta, lapack_complex_double *u, lapack_int ldu, lapack_complex_double *v, lapack_int ldv, lapack_complex_double *q, lapack_int ldq, lapack_complex_double *work, lapack_int lwork, double *rwork, lapack_int *iwork)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
lapack_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
int LAPACKE_get_nancheck()
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