LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zbbcsd()

lapack_int LAPACKE_zbbcsd ( int  matrix_layout,
char  jobu1,
char  jobu2,
char  jobv1t,
char  jobv2t,
char  trans,
lapack_int  m,
lapack_int  p,
lapack_int  q,
double *  theta,
double *  phi,
lapack_complex_double u1,
lapack_int  ldu1,
lapack_complex_double u2,
lapack_int  ldu2,
lapack_complex_double v1t,
lapack_int  ldv1t,
lapack_complex_double v2t,
lapack_int  ldv2t,
double *  b11d,
double *  b11e,
double *  b12d,
double *  b12e,
double *  b21d,
double *  b21e,
double *  b22d,
double *  b22e 
)

Definition at line 36 of file lapacke_zbbcsd.c.

46 {
47  lapack_int info = 0;
48  lapack_int lrwork = -1;
49  double* rwork = NULL;
50  double rwork_query;
51  int lapack_layout;
52  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
53  LAPACKE_xerbla( "LAPACKE_zbbcsd", -1 );
54  return -1;
55  }
56  if( LAPACKE_lsame( trans, 'n' ) && matrix_layout == LAPACK_COL_MAJOR ) {
57  lapack_layout = LAPACK_COL_MAJOR;
58  } else {
59  lapack_layout = LAPACK_ROW_MAJOR;
60  }
61 #ifndef LAPACK_DISABLE_NAN_CHECK
62  /* Optionally check input matrices for NaNs */
63  if( LAPACKE_d_nancheck( q-1, phi, 1 ) ) {
64  return -11;
65  }
66  if( LAPACKE_d_nancheck( q, theta, 1 ) ) {
67  return -10;
68  }
69  if( LAPACKE_lsame( jobu1, 'y' ) ) {
70  if( LAPACKE_zge_nancheck( lapack_layout, p, p, u1, ldu1 ) ) {
71  return -12;
72  }
73  }
74  if( LAPACKE_lsame( jobu2, 'y' ) ) {
75  if( LAPACKE_zge_nancheck( lapack_layout, m-p, m-p, u2, ldu2 ) ) {
76  return -14;
77  }
78  }
79  if( LAPACKE_lsame( jobv1t, 'y' ) ) {
80  if( LAPACKE_zge_nancheck( lapack_layout, q, q, v1t, ldv1t ) ) {
81  return -16;
82  }
83  }
84  if( LAPACKE_lsame( jobv2t, 'y' ) ) {
85  if( LAPACKE_zge_nancheck( lapack_layout, m-q, m-q, v2t, ldv2t ) ) {
86  return -18;
87  }
88  }
89 #endif
90  /* Query optimal working array(s) size */
91  info = LAPACKE_zbbcsd_work( matrix_layout, jobu1, jobu2, jobv1t, jobv2t,
92  trans, m, p, q, theta, phi, u1, ldu1, u2, ldu2,
93  v1t, ldv1t, v2t, ldv2t, b11d, b11e, b12d, b12e,
94  b21d, b21e, b22d, b22e, &rwork_query, lrwork );
95  if( info != 0 ) {
96  goto exit_level_0;
97  }
98  lrwork = (lapack_int)rwork_query;
99  /* Allocate memory for work arrays */
100  rwork = (double*)LAPACKE_malloc( sizeof(double) * lrwork );
101  if( rwork == NULL ) {
103  goto exit_level_0;
104  }
105  /* Call middle-level interface */
106  info = LAPACKE_zbbcsd_work( matrix_layout, jobu1, jobu2, jobv1t, jobv2t,
107  trans, m, p, q, theta, phi, u1, ldu1, u2, ldu2,
108  v1t, ldv1t, v2t, ldv2t, b11d, b11e, b12d, b12e,
109  b21d, b21e, b22d, b22e, rwork, lrwork );
110  /* Release memory and exit */
111  LAPACKE_free( rwork );
112 exit_level_0:
113  if( info == LAPACK_WORK_MEMORY_ERROR ) {
114  LAPACKE_xerbla( "LAPACKE_zbbcsd", info );
115  }
116  return info;
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
lapack_int LAPACKE_zbbcsd_work(int matrix_layout, char jobu1, char jobu2, char jobv1t, char jobv2t, char trans, lapack_int m, lapack_int p, lapack_int q, double *theta, double *phi, lapack_complex_double *u1, lapack_int ldu1, lapack_complex_double *u2, lapack_int ldu2, lapack_complex_double *v1t, lapack_int ldv1t, lapack_complex_double *v2t, lapack_int ldv2t, double *b11d, double *b11e, double *b12d, double *b12e, double *b21d, double *b21e, double *b22d, double *b22e, double *rwork, lapack_int lrwork)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#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)
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