GNU Octave  6.2.0
A high-level interpreted language, primarily intended for numerical computations, mostly compatible with Matlab
gepbalance.cc
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25 
26 #if defined (HAVE_CONFIG_H)
27 # include "config.h"
28 #endif
29 
30 #include "CMatrix.h"
31 #include "dMatrix.h"
32 #include "fCMatrix.h"
33 #include "fMatrix.h"
34 #include "gepbalance.h"
35 #include "lo-array-errwarn.h"
36 #include "lo-error.h"
37 #include "lo-lapack-proto.h"
38 #include "oct-locbuf.h"
39 #include "quit.h"
40 
41 namespace octave
42 {
43  namespace math
44  {
45  template <>
46  octave_idx_type
47  gepbalance<Matrix>::init (const Matrix& a, const Matrix& b,
48  const std::string& balance_job)
49  {
50  F77_INT n = to_f77_int (a.cols ());
51 
52  if (a.rows () != n)
53  (*current_liboctave_error_handler)
54  ("GEPBALANCE requires square matrix");
55 
56  if (a.dims () != b.dims ())
57  err_nonconformant ("GEPBALANCE", n, n, b.rows(), b.cols());
58 
59  F77_INT info;
60  F77_INT ilo;
61  F77_INT ihi;
62 
63  OCTAVE_LOCAL_BUFFER (double, plscale, n);
64  OCTAVE_LOCAL_BUFFER (double, prscale, n);
65  OCTAVE_LOCAL_BUFFER (double, pwork, 6 * n);
66 
67  balanced_mat = a;
68  double *p_balanced_mat = balanced_mat.fortran_vec ();
69  balanced_mat2 = b;
70  double *p_balanced_mat2 = balanced_mat2.fortran_vec ();
71 
72  char job = balance_job[0];
73 
74  F77_XFCN (dggbal, DGGBAL, (F77_CONST_CHAR_ARG2 (&job, 1),
75  n, p_balanced_mat, n, p_balanced_mat2,
76  n, ilo, ihi, plscale, prscale, pwork, info
77  F77_CHAR_ARG_LEN (1)));
78 
79  balancing_mat = Matrix (n, n, 0.0);
80  balancing_mat2 = Matrix (n, n, 0.0);
81  for (F77_INT i = 0; i < n; i++)
82  {
83  octave_quit ();
84  balancing_mat.elem (i,i) = 1.0;
85  balancing_mat2.elem (i,i) = 1.0;
86  }
87 
88  double *p_balancing_mat = balancing_mat.fortran_vec ();
89  double *p_balancing_mat2 = balancing_mat2.fortran_vec ();
90 
91  // first left
92  F77_XFCN (dggbak, DGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
93  F77_CONST_CHAR_ARG2 ("L", 1),
94  n, ilo, ihi, plscale, prscale,
95  n, p_balancing_mat, n, info
96  F77_CHAR_ARG_LEN (1)
97  F77_CHAR_ARG_LEN (1)));
98 
99  // then right
100  F77_XFCN (dggbak, DGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
101  F77_CONST_CHAR_ARG2 ("R", 1),
102  n, ilo, ihi, plscale, prscale,
103  n, p_balancing_mat2, n, info
104  F77_CHAR_ARG_LEN (1)
105  F77_CHAR_ARG_LEN (1)));
106 
107  return info;
108  }
109 
110  template <>
111  octave_idx_type
112  gepbalance<FloatMatrix>::init (const FloatMatrix& a, const FloatMatrix& b,
113  const std::string& balance_job)
114  {
115  F77_INT n = to_f77_int (a.cols ());
116 
117  if (a.rows () != n)
118  (*current_liboctave_error_handler)
119  ("FloatGEPBALANCE requires square matrix");
120 
121  if (a.dims () != b.dims ())
122  err_nonconformant ("FloatGEPBALANCE",
123  n, n, b.rows(), b.cols());
124 
125  F77_INT info;
126  F77_INT ilo;
127  F77_INT ihi;
128 
129  OCTAVE_LOCAL_BUFFER (float, plscale, n);
130  OCTAVE_LOCAL_BUFFER (float, prscale, n);
131  OCTAVE_LOCAL_BUFFER (float, pwork, 6 * n);
132 
133  balanced_mat = a;
134  float *p_balanced_mat = balanced_mat.fortran_vec ();
135  balanced_mat2 = b;
136  float *p_balanced_mat2 = balanced_mat2.fortran_vec ();
137 
138  char job = balance_job[0];
139 
140  F77_XFCN (sggbal, SGGBAL, (F77_CONST_CHAR_ARG2 (&job, 1),
141  n, p_balanced_mat, n, p_balanced_mat2,
142  n, ilo, ihi, plscale, prscale, pwork, info
143  F77_CHAR_ARG_LEN (1)));
144 
145  balancing_mat = FloatMatrix (n, n, 0.0);
146  balancing_mat2 = FloatMatrix (n, n, 0.0);
147  for (F77_INT i = 0; i < n; i++)
148  {
149  octave_quit ();
150  balancing_mat.elem (i,i) = 1.0;
151  balancing_mat2.elem (i,i) = 1.0;
152  }
153 
154  float *p_balancing_mat = balancing_mat.fortran_vec ();
155  float *p_balancing_mat2 = balancing_mat2.fortran_vec ();
156 
157  // first left
158  F77_XFCN (sggbak, SGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
159  F77_CONST_CHAR_ARG2 ("L", 1),
160  n, ilo, ihi, plscale, prscale,
161  n, p_balancing_mat, n, info
162  F77_CHAR_ARG_LEN (1)
163  F77_CHAR_ARG_LEN (1)));
164 
165  // then right
166  F77_XFCN (sggbak, SGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
167  F77_CONST_CHAR_ARG2 ("R", 1),
168  n, ilo, ihi, plscale, prscale,
169  n, p_balancing_mat2, n, info
170  F77_CHAR_ARG_LEN (1)
171  F77_CHAR_ARG_LEN (1)));
172 
173  return info;
174  }
175 
176  template <>
177  octave_idx_type
178  gepbalance<ComplexMatrix>::init (const ComplexMatrix& a,
179  const ComplexMatrix& b,
180  const std::string& balance_job)
181  {
182  F77_INT n = to_f77_int (a.cols ());
183 
184  if (a.rows () != n)
185  (*current_liboctave_error_handler)
186  ("ComplexGEPBALANCE requires square matrix");
187 
188  if (a.dims () != b.dims ())
189  err_nonconformant ("ComplexGEPBALANCE",
190  n, n, b.rows(), b.cols());
191 
192  F77_INT info;
193  F77_INT ilo;
194  F77_INT ihi;
195 
196  OCTAVE_LOCAL_BUFFER (double, plscale, n);
197  OCTAVE_LOCAL_BUFFER (double, prscale, n);
198  OCTAVE_LOCAL_BUFFER (double, pwork, 6 * n);
199 
200  balanced_mat = a;
201  Complex *p_balanced_mat = balanced_mat.fortran_vec ();
202  balanced_mat2 = b;
203  Complex *p_balanced_mat2 = balanced_mat2.fortran_vec ();
204 
205  char job = balance_job[0];
206 
207  F77_XFCN (zggbal, ZGGBAL, (F77_CONST_CHAR_ARG2 (&job, 1),
208  n, F77_DBLE_CMPLX_ARG (p_balanced_mat),
209  n, F77_DBLE_CMPLX_ARG (p_balanced_mat2),
210  n, ilo, ihi, plscale, prscale, pwork, info
211  F77_CHAR_ARG_LEN (1)));
212 
213  balancing_mat = Matrix (n, n, 0.0);
214  balancing_mat2 = Matrix (n, n, 0.0);
215  for (F77_INT i = 0; i < n; i++)
216  {
217  octave_quit ();
218  balancing_mat.elem (i,i) = 1.0;
219  balancing_mat2.elem (i,i) = 1.0;
220  }
221 
222  double *p_balancing_mat = balancing_mat.fortran_vec ();
223  double *p_balancing_mat2 = balancing_mat2.fortran_vec ();
224 
225  // first left
226  F77_XFCN (dggbak, DGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
227  F77_CONST_CHAR_ARG2 ("L", 1),
228  n, ilo, ihi, plscale, prscale,
229  n, p_balancing_mat, n, info
230  F77_CHAR_ARG_LEN (1)
231  F77_CHAR_ARG_LEN (1)));
232 
233  // then right
234  F77_XFCN (dggbak, DGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
235  F77_CONST_CHAR_ARG2 ("R", 1),
236  n, ilo, ihi, plscale, prscale,
237  n, p_balancing_mat2, n, info
238  F77_CHAR_ARG_LEN (1)
239  F77_CHAR_ARG_LEN (1)));
240 
241  return info;
242  }
243 
244  template <>
245  octave_idx_type
246  gepbalance<FloatComplexMatrix>::init (const FloatComplexMatrix& a,
247  const FloatComplexMatrix& b,
248  const std::string& balance_job)
249  {
250  F77_INT n = to_f77_int (a.cols ());
251 
252  if (a.rows () != n)
253  {
254  (*current_liboctave_error_handler)
255  ("FloatComplexGEPBALANCE requires square matrix");
256  return -1;
257  }
258 
259  if (a.dims () != b.dims ())
260  err_nonconformant ("FloatComplexGEPBALANCE",
261  n, n, b.rows(), b.cols());
262 
263  F77_INT info;
264  F77_INT ilo;
265  F77_INT ihi;
266 
267  OCTAVE_LOCAL_BUFFER (float, plscale, n);
268  OCTAVE_LOCAL_BUFFER (float, prscale, n);
269  OCTAVE_LOCAL_BUFFER (float, pwork, 6 * n);
270 
271  balanced_mat = a;
272  FloatComplex *p_balanced_mat = balanced_mat.fortran_vec ();
273  balanced_mat2 = b;
274  FloatComplex *p_balanced_mat2 = balanced_mat2.fortran_vec ();
275 
276  char job = balance_job[0];
277 
278  F77_XFCN (cggbal, CGGBAL, (F77_CONST_CHAR_ARG2 (&job, 1),
279  n, F77_CMPLX_ARG (p_balanced_mat),
280  n, F77_CMPLX_ARG (p_balanced_mat2),
281  n, ilo, ihi, plscale, prscale, pwork, info
282  F77_CHAR_ARG_LEN (1)));
283 
284  balancing_mat = FloatMatrix (n, n, 0.0);
285  balancing_mat2 = FloatMatrix (n, n, 0.0);
286  for (F77_INT i = 0; i < n; i++)
287  {
288  octave_quit ();
289  balancing_mat.elem (i,i) = 1.0;
290  balancing_mat2.elem (i,i) = 1.0;
291  }
292 
293  float *p_balancing_mat = balancing_mat.fortran_vec ();
294  float *p_balancing_mat2 = balancing_mat2.fortran_vec ();
295 
296  // first left
297  F77_XFCN (sggbak, SGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
298  F77_CONST_CHAR_ARG2 ("L", 1),
299  n, ilo, ihi, plscale, prscale,
300  n, p_balancing_mat, n, info
301  F77_CHAR_ARG_LEN (1)
302  F77_CHAR_ARG_LEN (1)));
303 
304  // then right
305  F77_XFCN (sggbak, SGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
306  F77_CONST_CHAR_ARG2 ("R", 1),
307  n, ilo, ihi, plscale, prscale,
308  n, p_balancing_mat2, n, info
309  F77_CHAR_ARG_LEN (1)
310  F77_CHAR_ARG_LEN (1)));
311 
312  return info;
313  }
314 
315  // Instantiations we need.
316 
317  template class gepbalance<Matrix>;
318 
319  template class gepbalance<FloatMatrix>;
320 
321  template class gepbalance<ComplexMatrix>;
322 
323  template class gepbalance<FloatComplexMatrix>;
324  }
325 }
Array::cols
octave_idx_type cols(void) const
Definition: Array.h:423
Array::rows
octave_idx_type rows(void) const
Definition: Array.h:415
Array::dims
const dim_vector & dims(void) const
Return a const-reference so that dims ()(i) works efficiently.
Definition: Array.h:453
Array::fortran_vec
const T * fortran_vec(void) const
Size of the specified dimension.
Definition: Array.h:583
Matrix
Definition: dMatrix.h:42
octave::math::gepbalance::init
octave_idx_type init(const T &a, const T &b, const std::string &job)
octave_idx_type
F77_DBLE_CMPLX_ARG
#define F77_DBLE_CMPLX_ARG(x)
Definition: f77-fcn.h:315
F77_CMPLX_ARG
#define F77_CMPLX_ARG(x)
Definition: f77-fcn.h:309
F77_XFCN
#define F77_XFCN(f, F, args)
Definition: f77-fcn.h:44
F77_INT
octave_f77_int_type F77_INT
Definition: f77-fcn.h:305
n
octave_idx_type n
Definition: mx-inlines.cc:753
octave::err_nonconformant
void err_nonconformant(const char *op, octave_idx_type op1_len, octave_idx_type op2_len)
Definition: lo-array-errwarn.cc:70
Complex
std::complex< double > Complex
Definition: oct-cmplx.h:33
FloatComplex
std::complex< float > FloatComplex
Definition: oct-cmplx.h:34
OCTAVE_LOCAL_BUFFER
#define OCTAVE_LOCAL_BUFFER(T, buf, size)
Definition: oct-locbuf.h:44