LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zggsvd()

lapack_int LAPACKE_zggsvd ( 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_zggsvd.c.

46 {
47  lapack_int info = 0;
48  double* rwork = NULL;
49  lapack_complex_double* work = NULL;
50  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
51  LAPACKE_xerbla( "LAPACKE_zggsvd", -1 );
52  return -1;
53  }
54 #ifndef LAPACK_DISABLE_NAN_CHECK
55  if( LAPACKE_get_nancheck() ) {
56  /* Optionally check input matrices for NaNs */
57  if( LAPACKE_zge_nancheck( matrix_layout, m, n, a, lda ) ) {
58  return -10;
59  }
60  if( LAPACKE_zge_nancheck( matrix_layout, p, n, b, ldb ) ) {
61  return -12;
62  }
63  }
64 #endif
65  /* Allocate memory for working array(s) */
66  rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
67  if( rwork == NULL ) {
69  goto exit_level_0;
70  }
71  work = (lapack_complex_double*)
73  MAX(1,MAX3(3*n,m,p)+n) );
74  if( work == NULL ) {
76  goto exit_level_1;
77  }
78  /* Call middle-level interface */
79  info = LAPACKE_zggsvd_work( matrix_layout, jobu, jobv, jobq, m, n, p, k, l,
80  a, lda, b, ldb, alpha, beta, u, ldu, v, ldv, q,
81  ldq, work, rwork, iwork );
82  /* Release memory and exit */
83  LAPACKE_free( work );
84 exit_level_1:
85  LAPACKE_free( rwork );
86 exit_level_0:
87  if( info == LAPACK_WORK_MEMORY_ERROR ) {
88  LAPACKE_xerbla( "LAPACKE_zggsvd", info );
89  }
90  return info;
91 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
lapack_int LAPACKE_zggsvd_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, double *rwork, lapack_int *iwork)
#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 MAX3(x, y, z)
Definition: lapacke_utils.h:53
#define MAX(x, y)
Definition: lapacke_utils.h:47
#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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