LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zuncsd()

lapack_int LAPACKE_zuncsd ( int  matrix_layout,
char  jobu1,
char  jobu2,
char  jobv1t,
char  jobv2t,
char  trans,
char  signs,
lapack_int  m,
lapack_int  p,
lapack_int  q,
lapack_complex_double x11,
lapack_int  ldx11,
lapack_complex_double x12,
lapack_int  ldx12,
lapack_complex_double x21,
lapack_int  ldx21,
lapack_complex_double x22,
lapack_int  ldx22,
double *  theta,
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 
)

Definition at line 36 of file lapacke_zuncsd.c.

48 {
49  lapack_int info = 0;
50  lapack_int lrwork = -1;
51  lapack_int lwork = -1;
52  lapack_int* iwork = NULL;
53  double* rwork = NULL;
54  lapack_complex_double* work = NULL;
55  double rwork_query;
56  lapack_complex_double work_query;
57  int lapack_layout;
58  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
59  LAPACKE_xerbla( "LAPACKE_zuncsd", -1 );
60  return -1;
61  }
62  if( LAPACKE_lsame( trans, 'n' ) && matrix_layout == LAPACK_COL_MAJOR ) {
63  lapack_layout = LAPACK_COL_MAJOR;
64  } else {
65  lapack_layout = LAPACK_ROW_MAJOR;
66  }
67 #ifndef LAPACK_DISABLE_NAN_CHECK
68  if( LAPACKE_get_nancheck() ) {
69  /* Optionally check input matrices for NaNs */
70  if( LAPACKE_zge_nancheck( lapack_layout, p, q, x11, ldx11 ) ) {
71  return -11;
72  }
73  if( LAPACKE_zge_nancheck( lapack_layout, p, m-q, x12, ldx12 ) ) {
74  return -13;
75  }
76  if( LAPACKE_zge_nancheck( lapack_layout, m-p, q, x21, ldx21 ) ) {
77  return -15;
78  }
79  if( LAPACKE_zge_nancheck( lapack_layout, m-p, m-q, x22, ldx22 ) ) {
80  return -17;
81  }
82  }
83 #endif
84  /* Allocate memory for working array(s) */
85  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,m-MIN(MIN(p,m-p),MIN(q,m-q))) );
86  if( iwork == NULL ) {
88  goto exit_level_0;
89  }
90  /* Query optimal working array(s) size */
91  info = LAPACKE_zuncsd_work( matrix_layout, jobu1, jobu2, jobv1t, jobv2t,
92  trans, signs, m, p, q, x11, ldx11, x12, ldx12,
93  x21, ldx21, x22, ldx22, theta, u1, ldu1, u2,
94  ldu2, v1t, ldv1t, v2t, ldv2t, &work_query,
95  lwork, &rwork_query, lrwork, iwork );
96  if( info != 0 ) {
97  goto exit_level_1;
98  }
99  lrwork = (lapack_int)rwork_query;
100  lwork = LAPACK_Z2INT( work_query );
101  /* Allocate memory for work arrays */
102  rwork = (double*)LAPACKE_malloc( sizeof(double) * lrwork );
103  if( rwork == NULL ) {
105  goto exit_level_1;
106  }
107  work = (lapack_complex_double*)
108  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
109  if( work == NULL ) {
111  goto exit_level_2;
112  }
113  /* Call middle-level interface */
114  info = LAPACKE_zuncsd_work( matrix_layout, jobu1, jobu2, jobv1t, jobv2t,
115  trans, signs, m, p, q, x11, ldx11, x12, ldx12,
116  x21, ldx21, x22, ldx22, theta, u1, ldu1, u2,
117  ldu2, v1t, ldv1t, v2t, ldv2t, work, lwork,
118  rwork, lrwork, iwork );
119  /* Release memory and exit */
120  LAPACKE_free( work );
121 exit_level_2:
122  LAPACKE_free( rwork );
123 exit_level_1:
124  LAPACKE_free( iwork );
125 exit_level_0:
126  if( info == LAPACK_WORK_MEMORY_ERROR ) {
127  LAPACKE_xerbla( "LAPACKE_zuncsd", info );
128  }
129  return info;
130 }
#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 MIN(x, y)
Definition: lapacke_utils.h:50
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
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)
lapack_int LAPACKE_zuncsd_work(int matrix_layout, char jobu1, char jobu2, char jobv1t, char jobv2t, char trans, char signs, lapack_int m, lapack_int p, lapack_int q, lapack_complex_double *x11, lapack_int ldx11, lapack_complex_double *x12, lapack_int ldx12, lapack_complex_double *x21, lapack_int ldx21, lapack_complex_double *x22, lapack_int ldx22, double *theta, 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, lapack_complex_double *work, lapack_int lwork, double *rwork, lapack_int lrwork, lapack_int *iwork)
#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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