|
458
|
1 // ColumnVector manipulations. -*- C++ -*- |
|
|
2 /* |
|
|
3 |
|
1011
|
4 Copyright (C) 1992, 1993, 1994, 1995 John W. Eaton |
|
458
|
5 |
|
|
6 This file is part of Octave. |
|
|
7 |
|
|
8 Octave is free software; you can redistribute it and/or modify it |
|
|
9 under the terms of the GNU General Public License as published by the |
|
|
10 Free Software Foundation; either version 2, or (at your option) any |
|
|
11 later version. |
|
|
12 |
|
|
13 Octave is distributed in the hope that it will be useful, but WITHOUT |
|
|
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
|
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
|
16 for more details. |
|
|
17 |
|
|
18 You should have received a copy of the GNU General Public License |
|
|
19 along with Octave; see the file COPYING. If not, write to the Free |
|
|
20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
|
|
21 |
|
|
22 */ |
|
|
23 |
|
|
24 #ifdef HAVE_CONFIG_H |
|
1192
|
25 #include <config.h> |
|
458
|
26 #endif |
|
|
27 |
|
|
28 #include <iostream.h> |
|
|
29 |
|
|
30 #include <Complex.h> |
|
|
31 |
|
|
32 #include "mx-base.h" |
|
|
33 #include "mx-inlines.cc" |
|
|
34 #include "f77-uscore.h" |
|
|
35 #include "lo-error.h" |
|
|
36 |
|
|
37 // Fortran functions we call. |
|
|
38 |
|
|
39 extern "C" |
|
|
40 { |
|
1205
|
41 int F77_FCN (dgemv) (const char*, const int*, const int*, |
|
|
42 const double*, const double*, const int*, |
|
458
|
43 const double*, const int*, const double*, |
|
1205
|
44 double*, const int*, long); |
|
458
|
45 } |
|
|
46 |
|
|
47 /* |
|
|
48 * Column Vector class. |
|
|
49 */ |
|
|
50 |
|
|
51 #define KLUDGE_VECTORS |
|
|
52 #define TYPE double |
|
|
53 #define KL_VEC_TYPE ColumnVector |
|
|
54 #include "mx-kludge.cc" |
|
|
55 #undef KLUDGE_VECTORS |
|
|
56 #undef TYPE |
|
|
57 #undef KL_VEC_TYPE |
|
|
58 |
|
|
59 int |
|
|
60 ColumnVector::operator == (const ColumnVector& a) const |
|
|
61 { |
|
|
62 int len = length (); |
|
|
63 if (len != a.length ()) |
|
|
64 return 0; |
|
|
65 return equal (data (), a.data (), len); |
|
|
66 } |
|
|
67 |
|
|
68 int |
|
|
69 ColumnVector::operator != (const ColumnVector& a) const |
|
|
70 { |
|
|
71 return !(*this == a); |
|
|
72 } |
|
|
73 |
|
|
74 ColumnVector& |
|
|
75 ColumnVector::insert (const ColumnVector& a, int r) |
|
|
76 { |
|
|
77 int a_len = a.length (); |
|
|
78 if (r < 0 || r + a_len - 1 > length ()) |
|
|
79 { |
|
|
80 (*current_liboctave_error_handler) ("range error for insert"); |
|
|
81 return *this; |
|
|
82 } |
|
|
83 |
|
|
84 for (int i = 0; i < a_len; i++) |
|
|
85 elem (r+i) = a.elem (i); |
|
|
86 |
|
|
87 return *this; |
|
|
88 } |
|
|
89 |
|
|
90 ColumnVector& |
|
|
91 ColumnVector::fill (double val) |
|
|
92 { |
|
|
93 int len = length (); |
|
|
94 if (len > 0) |
|
|
95 for (int i = 0; i < len; i++) |
|
|
96 elem (i) = val; |
|
|
97 return *this; |
|
|
98 } |
|
|
99 |
|
|
100 ColumnVector& |
|
|
101 ColumnVector::fill (double val, int r1, int r2) |
|
|
102 { |
|
|
103 int len = length (); |
|
|
104 if (r1 < 0 || r2 < 0 || r1 >= len || r2 >= len) |
|
|
105 { |
|
|
106 (*current_liboctave_error_handler) ("range error for fill"); |
|
|
107 return *this; |
|
|
108 } |
|
|
109 |
|
|
110 if (r1 > r2) { int tmp = r1; r1 = r2; r2 = tmp; } |
|
|
111 |
|
|
112 for (int i = r1; i <= r2; i++) |
|
|
113 elem (i) = val; |
|
|
114 |
|
|
115 return *this; |
|
|
116 } |
|
|
117 |
|
|
118 ColumnVector |
|
|
119 ColumnVector::stack (const ColumnVector& a) const |
|
|
120 { |
|
|
121 int len = length (); |
|
|
122 int nr_insert = len; |
|
|
123 ColumnVector retval (len + a.length ()); |
|
|
124 retval.insert (*this, 0); |
|
|
125 retval.insert (a, nr_insert); |
|
|
126 return retval; |
|
|
127 } |
|
|
128 |
|
|
129 RowVector |
|
|
130 ColumnVector::transpose (void) const |
|
|
131 { |
|
|
132 int len = length (); |
|
|
133 return RowVector (dup (data (), len), len); |
|
|
134 } |
|
|
135 |
|
1205
|
136 ColumnVector |
|
|
137 real (const ComplexColumnVector& a) |
|
|
138 { |
|
|
139 int a_len = a.length (); |
|
|
140 ColumnVector retval; |
|
|
141 if (a_len > 0) |
|
|
142 retval = ColumnVector (real_dup (a.data (), a_len), a_len); |
|
|
143 return retval; |
|
|
144 } |
|
|
145 |
|
|
146 ColumnVector |
|
|
147 imag (const ComplexColumnVector& a) |
|
|
148 { |
|
|
149 int a_len = a.length (); |
|
|
150 ColumnVector retval; |
|
|
151 if (a_len > 0) |
|
|
152 retval = ColumnVector (imag_dup (a.data (), a_len), a_len); |
|
|
153 return retval; |
|
|
154 } |
|
|
155 |
|
458
|
156 // resize is the destructive equivalent for this one |
|
|
157 |
|
|
158 ColumnVector |
|
|
159 ColumnVector::extract (int r1, int r2) const |
|
|
160 { |
|
|
161 if (r1 > r2) { int tmp = r1; r1 = r2; r2 = tmp; } |
|
|
162 |
|
|
163 int new_r = r2 - r1 + 1; |
|
|
164 |
|
|
165 ColumnVector result (new_r); |
|
|
166 |
|
|
167 for (int i = 0; i < new_r; i++) |
|
|
168 result.elem (i) = elem (r1+i); |
|
|
169 |
|
|
170 return result; |
|
|
171 } |
|
|
172 |
|
|
173 // column vector by column vector -> column vector operations |
|
|
174 |
|
|
175 ColumnVector& |
|
|
176 ColumnVector::operator += (const ColumnVector& a) |
|
|
177 { |
|
|
178 int len = length (); |
|
|
179 if (len != a.length ()) |
|
|
180 { |
|
|
181 (*current_liboctave_error_handler) |
|
|
182 ("nonconformant vector += operation attempted"); |
|
890
|
183 return *this; |
|
458
|
184 } |
|
|
185 |
|
|
186 if (len == 0) |
|
|
187 return *this; |
|
|
188 |
|
|
189 double *d = fortran_vec (); // Ensures only one reference to my privates! |
|
|
190 |
|
|
191 add2 (d, a.data (), len); |
|
|
192 return *this; |
|
|
193 } |
|
|
194 |
|
|
195 ColumnVector& |
|
|
196 ColumnVector::operator -= (const ColumnVector& a) |
|
|
197 { |
|
|
198 int len = length (); |
|
|
199 if (len != a.length ()) |
|
|
200 { |
|
|
201 (*current_liboctave_error_handler) |
|
|
202 ("nonconformant vector -= operation attempted"); |
|
889
|
203 return *this; |
|
458
|
204 } |
|
|
205 |
|
|
206 if (len == 0) |
|
|
207 return *this; |
|
|
208 |
|
|
209 double *d = fortran_vec (); // Ensures only one reference to my privates! |
|
|
210 |
|
|
211 subtract2 (d, a.data (), len); |
|
|
212 return *this; |
|
|
213 } |
|
|
214 |
|
1205
|
215 // matrix by column vector -> column vector operations |
|
458
|
216 |
|
1205
|
217 ColumnVector |
|
|
218 operator * (const Matrix& m, const ColumnVector& a) |
|
458
|
219 { |
|
1205
|
220 int nr = m.rows (); |
|
|
221 int nc = m.cols (); |
|
|
222 if (nc != a.length ()) |
|
458
|
223 { |
|
|
224 (*current_liboctave_error_handler) |
|
1205
|
225 ("nonconformant matrix multiplication attempted"); |
|
458
|
226 return ColumnVector (); |
|
|
227 } |
|
|
228 |
|
1205
|
229 if (nr == 0 || nc == 0) |
|
|
230 return ColumnVector (0); |
|
458
|
231 |
|
1205
|
232 char trans = 'N'; |
|
|
233 int ld = nr; |
|
|
234 double alpha = 1.0; |
|
|
235 double beta = 0.0; |
|
|
236 int i_one = 1; |
|
|
237 |
|
|
238 double *y = new double [nr]; |
|
|
239 |
|
|
240 F77_FCN (dgemv) (&trans, &nr, &nc, &alpha, m.data (), &ld, a.data (), |
|
|
241 &i_one, &beta, y, &i_one, 1L); |
|
|
242 |
|
|
243 return ColumnVector (y, nr); |
|
458
|
244 } |
|
|
245 |
|
1205
|
246 // diagonal matrix by column vector -> column vector operations |
|
|
247 |
|
|
248 ColumnVector |
|
|
249 operator * (const DiagMatrix& m, const ColumnVector& a) |
|
458
|
250 { |
|
1205
|
251 int nr = m.rows (); |
|
|
252 int nc = m.cols (); |
|
|
253 int a_len = a.length (); |
|
|
254 if (nc != a_len) |
|
458
|
255 { |
|
|
256 (*current_liboctave_error_handler) |
|
1205
|
257 ("nonconformant matrix multiplication attempted"); |
|
458
|
258 return ColumnVector (); |
|
|
259 } |
|
|
260 |
|
1205
|
261 if (nc == 0 || nr == 0) |
|
|
262 return ColumnVector (0); |
|
|
263 |
|
|
264 ColumnVector result (nr); |
|
458
|
265 |
|
1205
|
266 for (int i = 0; i < a_len; i++) |
|
|
267 result.elem (i) = a.elem (i) * m.elem (i, i); |
|
|
268 |
|
|
269 for (i = a_len; i < nr; i++) |
|
|
270 result.elem (i) = 0.0; |
|
|
271 |
|
|
272 return result; |
|
458
|
273 } |
|
|
274 |
|
|
275 // other operations |
|
|
276 |
|
|
277 ColumnVector |
|
|
278 map (d_d_Mapper f, const ColumnVector& a) |
|
|
279 { |
|
|
280 ColumnVector b (a); |
|
|
281 b.map (f); |
|
|
282 return b; |
|
|
283 } |
|
|
284 |
|
1205
|
285 ColumnVector |
|
|
286 map (d_c_Mapper f, const ComplexColumnVector& a) |
|
|
287 { |
|
|
288 int a_len = a.length (); |
|
|
289 ColumnVector b (a_len); |
|
|
290 for (int i = 0; i < a_len; i++) |
|
|
291 b.elem (i) = f (a.elem (i)); |
|
|
292 return b; |
|
|
293 } |
|
|
294 |
|
458
|
295 void |
|
|
296 ColumnVector::map (d_d_Mapper f) |
|
|
297 { |
|
|
298 for (int i = 0; i < length (); i++) |
|
|
299 elem (i) = f (elem (i)); |
|
|
300 } |
|
|
301 |
|
|
302 double |
|
|
303 ColumnVector::min (void) const |
|
|
304 { |
|
|
305 int len = length (); |
|
|
306 if (len == 0) |
|
|
307 return 0.0; |
|
|
308 |
|
|
309 double res = elem (0); |
|
|
310 |
|
|
311 for (int i = 1; i < len; i++) |
|
|
312 if (elem (i) < res) |
|
|
313 res = elem (i); |
|
|
314 |
|
|
315 return res; |
|
|
316 } |
|
|
317 |
|
|
318 double |
|
|
319 ColumnVector::max (void) const |
|
|
320 { |
|
|
321 int len = length (); |
|
|
322 if (len == 0) |
|
|
323 return 0.0; |
|
|
324 |
|
|
325 double res = elem (0); |
|
|
326 |
|
|
327 for (int i = 1; i < len; i++) |
|
|
328 if (elem (i) > res) |
|
|
329 res = elem (i); |
|
|
330 |
|
|
331 return res; |
|
|
332 } |
|
|
333 |
|
|
334 ostream& |
|
|
335 operator << (ostream& os, const ColumnVector& a) |
|
|
336 { |
|
|
337 // int field_width = os.precision () + 7; |
|
|
338 for (int i = 0; i < a.length (); i++) |
|
|
339 os << /* setw (field_width) << */ a.elem (i) << "\n"; |
|
|
340 return os; |
|
|
341 } |
|
|
342 |
|
|
343 istream& |
|
|
344 operator >> (istream& is, ColumnVector& a) |
|
|
345 { |
|
|
346 int len = a.length(); |
|
|
347 |
|
|
348 if (len < 1) |
|
|
349 is.clear (ios::badbit); |
|
|
350 else |
|
|
351 { |
|
|
352 double tmp; |
|
|
353 for (int i = 0; i < len; i++) |
|
|
354 { |
|
|
355 is >> tmp; |
|
|
356 if (is) |
|
|
357 a.elem (i) = tmp; |
|
|
358 else |
|
|
359 break; |
|
|
360 } |
|
|
361 } |
|
532
|
362 return is; |
|
458
|
363 } |
|
|
364 |
|
|
365 /* |
|
|
366 ;;; Local Variables: *** |
|
|
367 ;;; mode: C++ *** |
|
|
368 ;;; page-delimiter: "^/\\*" *** |
|
|
369 ;;; End: *** |
|
|
370 */ |
