LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cuncsd()

lapack_int LAPACKE_cuncsd ( 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_float x11,
lapack_int  ldx11,
lapack_complex_float x12,
lapack_int  ldx12,
lapack_complex_float x21,
lapack_int  ldx21,
lapack_complex_float x22,
lapack_int  ldx22,
float *  theta,
lapack_complex_float u1,
lapack_int  ldu1,
lapack_complex_float u2,
lapack_int  ldu2,
lapack_complex_float v1t,
lapack_int  ldv1t,
lapack_complex_float v2t,
lapack_int  ldv2t 
)

Definition at line 35 of file lapacke_cuncsd.c.

47 {
48  lapack_int info = 0;
49  lapack_int lrwork = -1;
50  lapack_int lwork = -1;
51  lapack_int* iwork = NULL;
52  float* rwork = NULL;
53  lapack_complex_float* work = NULL;
54  float rwork_query;
55  lapack_complex_float work_query;
56  int lapack_layout;
57  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
58  LAPACKE_xerbla( "LAPACKE_cuncsd", -1 );
59  return -1;
60  }
61  if( LAPACKE_lsame( trans, 'n' ) && matrix_layout == LAPACK_COL_MAJOR ) {
62  lapack_layout = LAPACK_COL_MAJOR;
63  } else {
64  lapack_layout = LAPACK_ROW_MAJOR;
65  }
66 #ifndef LAPACK_DISABLE_NAN_CHECK
67  if( LAPACKE_get_nancheck() ) {
68  /* Optionally check input matrices for NaNs */
69  if( LAPACKE_cge_nancheck( lapack_layout, p, q, x11, ldx11 ) ) {
70  return -11;
71  }
72  if( LAPACKE_cge_nancheck( lapack_layout, p, m-q, x12, ldx12 ) ) {
73  return -13;
74  }
75  if( LAPACKE_cge_nancheck( lapack_layout, m-p, q, x21, ldx21 ) ) {
76  return -15;
77  }
78  if( LAPACKE_cge_nancheck( lapack_layout, m-p, m-q, x22, ldx22 ) ) {
79  return -17;
80  }
81  }
82 #endif
83  /* Allocate memory for working array(s) */
84  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,m-MIN(MIN(p,m-p),MIN(q,m-q))) );
85  if( iwork == NULL ) {
87  goto exit_level_0;
88  }
89  /* Query optimal working array(s) size */
90  info = LAPACKE_cuncsd_work( matrix_layout, jobu1, jobu2, jobv1t, jobv2t,
91  trans, signs, m, p, q, x11, ldx11, x12, ldx12,
92  x21, ldx21, x22, ldx22, theta, u1, ldu1, u2,
93  ldu2, v1t, ldv1t, v2t, ldv2t, &work_query,
94  lwork, &rwork_query, lrwork, iwork );
95  if( info != 0 ) {
96  goto exit_level_1;
97  }
98  lrwork = (lapack_int)rwork_query;
99  lwork = LAPACK_C2INT( work_query );
100  /* Allocate memory for work arrays */
101  rwork = (float*)LAPACKE_malloc( sizeof(float) * lrwork );
102  if( rwork == NULL ) {
104  goto exit_level_1;
105  }
106  work = (lapack_complex_float*)
107  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
108  if( work == NULL ) {
110  goto exit_level_2;
111  }
112  /* Call middle-level interface */
113  info = LAPACKE_cuncsd_work( matrix_layout, jobu1, jobu2, jobv1t, jobv2t,
114  trans, signs, m, p, q, x11, ldx11, x12, ldx12,
115  x21, ldx21, x22, ldx22, theta, u1, ldu1, u2,
116  ldu2, v1t, ldv1t, v2t, ldv2t, work, lwork,
117  rwork, lrwork, iwork );
118  /* Release memory and exit */
119  LAPACKE_free( work );
120 exit_level_2:
121  LAPACKE_free( rwork );
122 exit_level_1:
123  LAPACKE_free( iwork );
124 exit_level_0:
125  if( info == LAPACK_WORK_MEMORY_ERROR ) {
126  LAPACKE_xerbla( "LAPACKE_cuncsd", info );
127  }
128  return info;
129 }
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_float
Definition: lapack.h:45
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
lapack_int LAPACKE_cuncsd_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_float *x11, lapack_int ldx11, lapack_complex_float *x12, lapack_int ldx12, lapack_complex_float *x21, lapack_int ldx21, lapack_complex_float *x22, lapack_int ldx22, float *theta, lapack_complex_float *u1, lapack_int ldu1, lapack_complex_float *u2, lapack_int ldu2, lapack_complex_float *v1t, lapack_int ldv1t, lapack_complex_float *v2t, lapack_int ldv2t, lapack_complex_float *work, lapack_int lwork, float *rwork, lapack_int lrwork, lapack_int *iwork)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACK_C2INT(x)
Definition: lapacke.h:49
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MIN(x, y)
Definition: lapacke_utils.h:49
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_logical LAPACKE_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
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