LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapack_int LAPACKE_zunbdb_work ( int  matrix_layout,
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,
double *  phi,
lapack_complex_double *  taup1,
lapack_complex_double *  taup2,
lapack_complex_double *  tauq1,
lapack_complex_double *  tauq2,
lapack_complex_double *  work,
lapack_int  lwork 
)

Definition at line 36 of file lapacke_zunbdb_work.c.

48 {
49  lapack_int info = 0;
50  if( matrix_layout == LAPACK_COL_MAJOR ) {
51  /* Call LAPACK function and adjust info */
52  LAPACK_zunbdb( &trans, &signs, &m, &p, &q, x11, &ldx11, x12, &ldx12,
53  x21, &ldx21, x22, &ldx22, theta, phi, taup1, taup2,
54  tauq1, tauq2, work, &lwork, &info );
55  if( info < 0 ) {
56  info = info - 1;
57  }
58  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
59  lapack_int nrows_x11 = ( LAPACKE_lsame( trans, 'n' ) ? p : q);
60  lapack_int nrows_x12 = ( LAPACKE_lsame( trans, 'n' ) ? p : m-q);
61  lapack_int nrows_x21 = ( LAPACKE_lsame( trans, 'n' ) ? m-p : q);
62  lapack_int nrows_x22 = ( LAPACKE_lsame( trans, 'n' ) ? m-p : m-q);
63  lapack_int ldx11_t = MAX(1,nrows_x11);
64  lapack_int ldx12_t = MAX(1,nrows_x12);
65  lapack_int ldx21_t = MAX(1,nrows_x21);
66  lapack_int ldx22_t = MAX(1,nrows_x22);
67  lapack_complex_double* x11_t = NULL;
68  lapack_complex_double* x12_t = NULL;
69  lapack_complex_double* x21_t = NULL;
70  lapack_complex_double* x22_t = NULL;
71  /* Check leading dimension(s) */
72  if( ldx11 < q ) {
73  info = -8;
74  LAPACKE_xerbla( "LAPACKE_zunbdb_work", info );
75  return info;
76  }
77  if( ldx12 < m-q ) {
78  info = -10;
79  LAPACKE_xerbla( "LAPACKE_zunbdb_work", info );
80  return info;
81  }
82  if( ldx21 < q ) {
83  info = -12;
84  LAPACKE_xerbla( "LAPACKE_zunbdb_work", info );
85  return info;
86  }
87  if( ldx22 < m-q ) {
88  info = -14;
89  LAPACKE_xerbla( "LAPACKE_zunbdb_work", info );
90  return info;
91  }
92  /* Query optimal working array(s) size if requested */
93  if( lwork == -1 ) {
94  LAPACK_zunbdb( &trans, &signs, &m, &p, &q, x11, &ldx11_t, x12,
95  &ldx12_t, x21, &ldx21_t, x22, &ldx22_t, theta, phi,
96  taup1, taup2, tauq1, tauq2, work, &lwork, &info );
97  return (info < 0) ? (info - 1) : info;
98  }
99  /* Allocate memory for temporary array(s) */
100  x11_t = (lapack_complex_double*)
101  LAPACKE_malloc( sizeof(lapack_complex_double) *
102  ldx11_t * MAX(1,q) );
103  if( x11_t == NULL ) {
104  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
105  goto exit_level_0;
106  }
107  x12_t = (lapack_complex_double*)
108  LAPACKE_malloc( sizeof(lapack_complex_double) *
109  ldx12_t * MAX(1,m-q) );
110  if( x12_t == NULL ) {
111  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
112  goto exit_level_1;
113  }
114  x21_t = (lapack_complex_double*)
115  LAPACKE_malloc( sizeof(lapack_complex_double) *
116  ldx21_t * MAX(1,q) );
117  if( x21_t == NULL ) {
118  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
119  goto exit_level_2;
120  }
121  x22_t = (lapack_complex_double*)
122  LAPACKE_malloc( sizeof(lapack_complex_double) *
123  ldx22_t * MAX(1,m-q) );
124  if( x22_t == NULL ) {
125  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
126  goto exit_level_3;
127  }
128  /* Transpose input matrices */
129  LAPACKE_zge_trans( matrix_layout, nrows_x11, q, x11, ldx11, x11_t,
130  ldx11_t );
131  LAPACKE_zge_trans( matrix_layout, nrows_x12, m-q, x12, ldx12, x12_t,
132  ldx12_t );
133  LAPACKE_zge_trans( matrix_layout, nrows_x21, q, x21, ldx21, x21_t,
134  ldx21_t );
135  LAPACKE_zge_trans( matrix_layout, nrows_x22, m-q, x22, ldx22, x22_t,
136  ldx22_t );
137  /* Call LAPACK function and adjust info */
138  LAPACK_zunbdb( &trans, &signs, &m, &p, &q, x11_t, &ldx11_t, x12_t,
139  &ldx12_t, x21_t, &ldx21_t, x22_t, &ldx22_t, theta, phi,
140  taup1, taup2, tauq1, tauq2, work, &lwork, &info );
141  if( info < 0 ) {
142  info = info - 1;
143  }
144  /* Transpose output matrices */
145  LAPACKE_zge_trans( LAPACK_COL_MAJOR, nrows_x11, q, x11_t, ldx11_t, x11,
146  ldx11 );
147  LAPACKE_zge_trans( LAPACK_COL_MAJOR, nrows_x12, m-q, x12_t, ldx12_t,
148  x12, ldx12 );
149  LAPACKE_zge_trans( LAPACK_COL_MAJOR, nrows_x21, q, x21_t, ldx21_t, x21,
150  ldx21 );
151  LAPACKE_zge_trans( LAPACK_COL_MAJOR, nrows_x22, m-q, x22_t, ldx22_t,
152  x22, ldx22 );
153  /* Release memory and exit */
154  LAPACKE_free( x22_t );
155 exit_level_3:
156  LAPACKE_free( x21_t );
157 exit_level_2:
158  LAPACKE_free( x12_t );
159 exit_level_1:
160  LAPACKE_free( x11_t );
161 exit_level_0:
162  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
163  LAPACKE_xerbla( "LAPACKE_zunbdb_work", info );
164  }
165  } else {
166  info = -1;
167  LAPACKE_xerbla( "LAPACKE_zunbdb_work", info );
168  }
169  return info;
170 }
LAPACK_zunbdb
void LAPACK_zunbdb(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, double *phi, lapack_complex_double *taup1, lapack_complex_double *taup2, lapack_complex_double *tauq1, lapack_complex_double *tauq2, lapack_complex_double *work, lapack_int *lwork, lapack_int *info)
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
lapack_complex_double
#define lapack_complex_double
Definition: lapacke.h:90
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:47
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:113
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:37
lapack_int
#define lapack_int
Definition: lapacke.h:47
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
LAPACKE_zge_trans
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
Definition: lapacke_zge_trans.c:40

Here is the call graph for this function:

Here is the caller graph for this function: