LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapack_int LAPACKE_dorcsd2by1_work ( int  matrix_layout,
char  jobu1,
char  jobu2,
char  jobv1t,
lapack_int  m,
lapack_int  p,
lapack_int  q,
double *  x11,
lapack_int  ldx11,
double *  x21,
lapack_int  ldx21,
double *  theta,
double *  u1,
lapack_int  ldu1,
double *  u2,
lapack_int  ldu2,
double *  v1t,
lapack_int  ldv1t,
double *  work,
lapack_int  lwork,
lapack_int *  iwork 
)

Definition at line 36 of file lapacke_dorcsd2by1_work.c.

44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_dorcsd2by1( &jobu1, &jobu2, &jobv1t, &m, &p,
49  &q, x11, &ldx11, x21, &ldx21,
50  theta, u1, &ldu1, u2, &ldu2, v1t, &ldv1t,
51  work, &lwork, iwork, &info );
52  if( info < 0 ) {
53  info = info - 1;
54  }
55  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
56  lapack_int nrows_x11 = p;
57  lapack_int nrows_x21 = m-p;
58  lapack_int nrows_u1 = ( LAPACKE_lsame( jobu1, 'y' ) ? p : 1);
59  lapack_int nrows_u2 = ( LAPACKE_lsame( jobu2, 'y' ) ? m-p : 1);
60  lapack_int nrows_v1t = ( LAPACKE_lsame( jobv1t, 'y' ) ? q : 1);
61  lapack_int ldu1_t = MAX(1,nrows_u1);
62  lapack_int ldu2_t = MAX(1,nrows_u2);
63  lapack_int ldv1t_t = MAX(1,nrows_v1t);
64  lapack_int ldx11_t = MAX(1,nrows_x11);
65  lapack_int ldx21_t = MAX(1,nrows_x21);
66  double* x11_t = NULL;
67  double* x21_t = NULL;
68  double* u1_t = NULL;
69  double* u2_t = NULL;
70  double* v1t_t = NULL;
71  /* Check leading dimension(s) */
72  if( ldu1 < p ) {
73  info = -21;
74  LAPACKE_xerbla( "LAPACKE_dorcsd2by1_work", info );
75  return info;
76  }
77  if( ldu2 < m-p ) {
78  info = -23;
79  LAPACKE_xerbla( "LAPACKE_dorcsd2by1_work", info );
80  return info;
81  }
82  if( ldv1t < q ) {
83  info = -25;
84  LAPACKE_xerbla( "LAPACKE_dorcsd2by1_work", info );
85  return info;
86  }
87  if( ldx11 < q ) {
88  info = -12;
89  LAPACKE_xerbla( "LAPACKE_dorcsd2by1_work", info );
90  return info;
91  }
92  if( ldx21 < q ) {
93  info = -16;
94  LAPACKE_xerbla( "LAPACKE_dorcsd2by1_work", info );
95  return info;
96  }
97  /* Query optimal working array(s) size if requested */
98  if( lwork == -1 ) {
99  LAPACK_dorcsd2by1( &jobu1, &jobu2, &jobv1t, &m, &p,
100  &q, x11, &ldx11_t, x21, &ldx21_t,
101  theta, u1, &ldu1_t, u2, &ldu2_t, v1t, &ldv1t_t,
102  work, &lwork, iwork, &info );
103  return (info < 0) ? (info - 1) : info;
104  }
105  /* Allocate memory for temporary array(s) */
106  x11_t = (double*)LAPACKE_malloc( sizeof(double) * ldx11_t * MAX(1,q) );
107  if( x11_t == NULL ) {
108  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
109  goto exit_level_0;
110  }
111  x21_t = (double*)LAPACKE_malloc( sizeof(double) * ldx21_t * MAX(1,q) );
112  if( x21_t == NULL ) {
113  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
114  goto exit_level_1;
115  }
116  if( LAPACKE_lsame( jobu1, 'y' ) ) {
117  u1_t = (double*)
118  LAPACKE_malloc( sizeof(double) * ldu1_t * MAX(1,p) );
119  if( u1_t == NULL ) {
120  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
121  goto exit_level_2;
122  }
123  }
124  if( LAPACKE_lsame( jobu2, 'y' ) ) {
125  u2_t = (double*)
126  LAPACKE_malloc( sizeof(double) * ldu2_t * MAX(1,m-p) );
127  if( u2_t == NULL ) {
128  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
129  goto exit_level_3;
130  }
131  }
132  if( LAPACKE_lsame( jobv1t, 'y' ) ) {
133  v1t_t = (double*)
134  LAPACKE_malloc( sizeof(double) * ldv1t_t * MAX(1,q) );
135  if( v1t_t == NULL ) {
136  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
137  goto exit_level_4;
138  }
139  }
140  /* Transpose input matrices */
141  LAPACKE_dge_trans( matrix_layout, nrows_x11, q, x11, ldx11, x11_t,
142  ldx11_t );
143  LAPACKE_dge_trans( matrix_layout, nrows_x21, q, x21, ldx21, x21_t,
144  ldx21_t );
145  /* Call LAPACK function and adjust info */
146  LAPACK_dorcsd2by1( &jobu1, &jobu2, &jobv1t, &m, &p,
147  &q, x11_t, &ldx11_t, x21_t, &ldx21_t,
148  theta, u1_t, &ldu1_t, u2_t, &ldu2_t, v1t_t, &ldv1t_t,
149  work, &lwork, iwork, &info );
150  if( info < 0 ) {
151  info = info - 1;
152  }
153  /* Transpose output matrices */
154  LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrows_x11, q, x11_t, ldx11_t, x11,
155  ldx11 );
156  LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrows_x21, q, x21_t, ldx21_t, x21,
157  ldx21 );
158  if( LAPACKE_lsame( jobu1, 'y' ) ) {
159  LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrows_u1, p, u1_t, ldu1_t, u1,
160  ldu1 );
161  }
162  if( LAPACKE_lsame( jobu2, 'y' ) ) {
163  LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrows_u2, m-p, u2_t, ldu2_t,
164  u2, ldu2 );
165  }
166  if( LAPACKE_lsame( jobv1t, 'y' ) ) {
167  LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrows_v1t, q, v1t_t, ldv1t_t,
168  v1t, ldv1t );
169  }
170  /* Release memory and exit */
171  if( LAPACKE_lsame( jobv1t, 'y' ) ) {
172  LAPACKE_free( v1t_t );
173  }
174 exit_level_4:
175  if( LAPACKE_lsame( jobu2, 'y' ) ) {
176  LAPACKE_free( u2_t );
177  }
178 exit_level_3:
179  if( LAPACKE_lsame( jobu1, 'y' ) ) {
180  LAPACKE_free( u1_t );
181  }
182 exit_level_2:
183  LAPACKE_free( x21_t );
184 exit_level_1:
185  LAPACKE_free( x11_t );
186 exit_level_0:
187  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
188  LAPACKE_xerbla( "LAPACKE_dorcsd2by1_work", info );
189  }
190  } else {
191  info = -1;
192  LAPACKE_xerbla( "LAPACKE_dorcsd2by1_work", info );
193  }
194  return info;
195 }
LAPACKE_dge_trans
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
Definition: lapacke_dge_trans.c:40
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
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_dorcsd2by1
void LAPACK_dorcsd2by1(char *jobu1, char *jobu2, char *jobv1t, lapack_int *m, lapack_int *p, lapack_int *q, double *x11, lapack_int *ldx11, double *x21, lapack_int *ldx21, double *theta, double *u1, lapack_int *ldu1, double *u2, lapack_int *ldu2, double *v1t, lapack_int *ldv1t, double *work, lapack_int *lwork, lapack_int *iwork, lapack_int *info)
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

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