Mercurial > hg > segmenter-vamp-plugin
comparison armadillo-2.4.4/include/armadillo_bits/subview_elem1_meat.hpp @ 0:8b6102e2a9b0
Armadillo Library
author | maxzanoni76 <max.zanoni@eecs.qmul.ac.uk> |
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date | Wed, 11 Apr 2012 09:27:06 +0100 |
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-1:000000000000 | 0:8b6102e2a9b0 |
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1 // Copyright (C) 2010-2011 NICTA (www.nicta.com.au) | |
2 // Copyright (C) 2010-2011 Conrad Sanderson | |
3 // | |
4 // This file is part of the Armadillo C++ library. | |
5 // It is provided without any warranty of fitness | |
6 // for any purpose. You can redistribute this file | |
7 // and/or modify it under the terms of the GNU | |
8 // Lesser General Public License (LGPL) as published | |
9 // by the Free Software Foundation, either version 3 | |
10 // of the License or (at your option) any later version. | |
11 // (see http://www.opensource.org/licenses for more info) | |
12 | |
13 | |
14 //! \addtogroup subview_elem1 | |
15 //! @{ | |
16 | |
17 | |
18 template<typename eT, typename T1> | |
19 inline | |
20 subview_elem1<eT,T1>::~subview_elem1() | |
21 { | |
22 arma_extra_debug_sigprint(); | |
23 } | |
24 | |
25 | |
26 template<typename eT, typename T1> | |
27 arma_inline | |
28 subview_elem1<eT,T1>::subview_elem1(const Mat<eT>& in_m, const Base<uword,T1>& in_a) | |
29 : m(in_m) | |
30 , m_ptr(0) | |
31 , a(in_a) | |
32 { | |
33 arma_extra_debug_sigprint(); | |
34 } | |
35 | |
36 | |
37 | |
38 template<typename eT, typename T1> | |
39 arma_inline | |
40 subview_elem1<eT,T1>::subview_elem1(Mat<eT>& in_m, const Base<uword,T1>& in_a) | |
41 : m(in_m) | |
42 , m_ptr(&in_m) | |
43 , a(in_a) | |
44 { | |
45 arma_extra_debug_sigprint(); | |
46 } | |
47 | |
48 | |
49 | |
50 template<typename eT, typename T1> | |
51 template<typename op_type> | |
52 inline | |
53 void | |
54 subview_elem1<eT,T1>::inplace_op(const eT val) | |
55 { | |
56 Mat<eT>& m_local = *m_ptr; | |
57 | |
58 eT* m_mem = m_local.memptr(); | |
59 const uword m_n_elem = m_local.n_elem; | |
60 | |
61 const unwrap_check_mixed<T1> tmp(a.get_ref(), m_local); | |
62 const umat& aa = tmp.M; | |
63 | |
64 arma_debug_check | |
65 ( | |
66 ( aa.is_vec() == false ), | |
67 "Mat::elem(): given object is not a vector" | |
68 ); | |
69 | |
70 const uword* aa_mem = aa.memptr(); | |
71 const uword aa_n_elem = aa.n_elem; | |
72 | |
73 uword i,j; | |
74 for(i=0, j=1; j<aa_n_elem; i+=2, j+=2) | |
75 { | |
76 const uword ii = aa_mem[i]; | |
77 const uword jj = aa_mem[j]; | |
78 | |
79 arma_debug_check( ( (ii >= m_n_elem) || (jj >= m_n_elem) ), "Mat::elem(): index out of bounds" ); | |
80 | |
81 if(is_same_type<op_type, op_subview_elem_equ >::value == true) { m_mem[ii] = val; m_mem[jj] = val; } | |
82 else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { m_mem[ii] += val; m_mem[jj] += val; } | |
83 else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { m_mem[ii] -= val; m_mem[jj] -= val; } | |
84 else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { m_mem[ii] *= val; m_mem[jj] *= val; } | |
85 else if(is_same_type<op_type, op_subview_elem_inplace_div >::value == true) { m_mem[ii] /= val; m_mem[jj] /= val; } | |
86 } | |
87 | |
88 if(i < aa_n_elem) | |
89 { | |
90 const uword ii = aa_mem[i]; | |
91 | |
92 arma_debug_check( (ii >= m_n_elem) , "Mat::elem(): index out of bounds" ); | |
93 | |
94 if(is_same_type<op_type, op_subview_elem_equ >::value == true) { m_mem[ii] = val; } | |
95 else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { m_mem[ii] += val; } | |
96 else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { m_mem[ii] -= val; } | |
97 else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { m_mem[ii] *= val; } | |
98 else if(is_same_type<op_type, op_subview_elem_inplace_div >::value == true) { m_mem[ii] /= val; } | |
99 } | |
100 } | |
101 | |
102 | |
103 | |
104 template<typename eT, typename T1> | |
105 template<typename op_type, typename T2> | |
106 inline | |
107 void | |
108 subview_elem1<eT,T1>::inplace_op(const subview_elem1<eT,T2>& x) | |
109 { | |
110 subview_elem1<eT,T1>& t = *this; | |
111 | |
112 if(&(t.m) == &(x.m)) | |
113 { | |
114 arma_extra_debug_print("subview_elem1::inplace_op(): aliasing detected"); | |
115 | |
116 const Mat<eT> tmp(x); | |
117 | |
118 if(is_same_type<op_type, op_subview_elem_equ >::value == true) { t.operator= (tmp); } | |
119 else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { t.operator+=(tmp); } | |
120 else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { t.operator-=(tmp); } | |
121 else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { t.operator%=(tmp); } | |
122 else if(is_same_type<op_type, op_subview_elem_inplace_div >::value == true) { t.operator/=(tmp); } | |
123 } | |
124 else | |
125 { | |
126 Mat<eT>& t_m_local = *(t.m_ptr); | |
127 const Mat<eT>& x_m_local = x.m; | |
128 | |
129 const unwrap_check_mixed<T1> t_tmp(t.a.get_ref(), t_m_local); | |
130 const unwrap_check_mixed<T2> x_tmp(x.a.get_ref(), t_m_local); | |
131 | |
132 const umat& t_aa = t_tmp.M; | |
133 const umat& x_aa = x_tmp.M; | |
134 | |
135 arma_debug_check | |
136 ( | |
137 ( (t_aa.is_vec() == false) || (x_aa.is_vec() == false) ), | |
138 "Mat::elem(): given object is not a vector" | |
139 ); | |
140 | |
141 const uword* t_aa_mem = t_aa.memptr(); | |
142 const uword* x_aa_mem = x_aa.memptr(); | |
143 | |
144 const uword t_aa_n_elem = t_aa.n_elem; | |
145 | |
146 arma_debug_check( (t_aa_n_elem != x_aa.n_elem), "Mat::elem(): size mismatch" ); | |
147 | |
148 | |
149 eT* t_m_mem = t_m_local.memptr(); | |
150 const uword t_m_n_elem = t_m_local.n_elem; | |
151 | |
152 const eT* x_m_mem = x_m_local.memptr(); | |
153 const uword x_m_n_elem = x_m_local.n_elem; | |
154 | |
155 uword i,j; | |
156 for(i=0, j=1; j<t_aa_n_elem; i+=2, j+=2) | |
157 { | |
158 const uword t_ii = t_aa_mem[i]; | |
159 const uword t_jj = t_aa_mem[j]; | |
160 | |
161 const uword x_ii = x_aa_mem[i]; | |
162 const uword x_jj = x_aa_mem[j]; | |
163 | |
164 arma_debug_check | |
165 ( | |
166 (t_ii >= t_m_n_elem) || (t_jj >= t_m_n_elem) || (x_ii >= x_m_n_elem) || (x_jj >= x_m_n_elem), | |
167 "Mat::elem(): index out of bounds" | |
168 ); | |
169 | |
170 if(is_same_type<op_type, op_subview_elem_equ >::value == true) { t_m_mem[t_ii] = x_m_mem[x_ii]; t_m_mem[t_jj] = x_m_mem[x_jj]; } | |
171 else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { t_m_mem[t_ii] += x_m_mem[x_ii]; t_m_mem[t_jj] += x_m_mem[x_jj]; } | |
172 else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { t_m_mem[t_ii] -= x_m_mem[x_ii]; t_m_mem[t_jj] -= x_m_mem[x_jj]; } | |
173 else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { t_m_mem[t_ii] *= x_m_mem[x_ii]; t_m_mem[t_jj] *= x_m_mem[x_jj]; } | |
174 else if(is_same_type<op_type, op_subview_elem_inplace_div >::value == true) { t_m_mem[t_ii] /= x_m_mem[x_ii]; t_m_mem[t_jj] /= x_m_mem[x_jj]; } | |
175 } | |
176 | |
177 if(i < t_aa_n_elem) | |
178 { | |
179 const uword t_ii = t_aa_mem[i]; | |
180 const uword x_ii = x_aa_mem[i]; | |
181 | |
182 arma_debug_check | |
183 ( | |
184 ( (t_ii >= t_m_n_elem) || (x_ii >= x_m_n_elem) ), | |
185 "Mat::elem(): index out of bounds" | |
186 ); | |
187 | |
188 if(is_same_type<op_type, op_subview_elem_equ >::value == true) { t_m_mem[t_ii] = x_m_mem[x_ii]; } | |
189 else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { t_m_mem[t_ii] += x_m_mem[x_ii]; } | |
190 else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { t_m_mem[t_ii] -= x_m_mem[x_ii]; } | |
191 else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { t_m_mem[t_ii] *= x_m_mem[x_ii]; } | |
192 else if(is_same_type<op_type, op_subview_elem_inplace_div >::value == true) { t_m_mem[t_ii] /= x_m_mem[x_ii]; } | |
193 } | |
194 } | |
195 } | |
196 | |
197 | |
198 | |
199 template<typename eT, typename T1> | |
200 template<typename op_type, typename T2> | |
201 inline | |
202 void | |
203 subview_elem1<eT,T1>::inplace_op(const Base<eT,T2>& x) | |
204 { | |
205 arma_extra_debug_sigprint(); | |
206 | |
207 Mat<eT>& m_local = *m_ptr; | |
208 | |
209 eT* m_mem = m_local.memptr(); | |
210 const uword m_n_elem = m_local.n_elem; | |
211 | |
212 const unwrap_check_mixed<T1> tmp(a.get_ref(), m_local); | |
213 const umat& aa = tmp.M; | |
214 | |
215 arma_debug_check | |
216 ( | |
217 ( aa.is_vec() == false ), | |
218 "Mat::elem(): given object is not a vector" | |
219 ); | |
220 | |
221 const uword* aa_mem = aa.memptr(); | |
222 const uword aa_n_elem = aa.n_elem; | |
223 | |
224 const Proxy<T2> P(x.get_ref()); | |
225 | |
226 arma_debug_check( (aa_n_elem != P.get_n_elem()), "Mat::elem(): size mismatch" ); | |
227 | |
228 if( (P.is_alias(m) == false) && (Proxy<T2>::prefer_at_accessor == false) ) | |
229 { | |
230 typename Proxy<T2>::ea_type X = P.get_ea(); | |
231 | |
232 uword i,j; | |
233 for(i=0, j=1; j<aa_n_elem; i+=2, j+=2) | |
234 { | |
235 const uword ii = aa_mem[i]; | |
236 const uword jj = aa_mem[j]; | |
237 | |
238 arma_debug_check( ( (ii >= m_n_elem) || (jj >= m_n_elem) ), "Mat::elem(): index out of bounds" ); | |
239 | |
240 if(is_same_type<op_type, op_subview_elem_equ >::value == true) { m_mem[ii] = X[i]; m_mem[jj] = X[j]; } | |
241 else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { m_mem[ii] += X[i]; m_mem[jj] += X[j]; } | |
242 else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { m_mem[ii] -= X[i]; m_mem[jj] -= X[j]; } | |
243 else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { m_mem[ii] *= X[i]; m_mem[jj] *= X[j]; } | |
244 else if(is_same_type<op_type, op_subview_elem_inplace_div >::value == true) { m_mem[ii] /= X[i]; m_mem[jj] /= X[j]; } | |
245 } | |
246 | |
247 if(i < aa_n_elem) | |
248 { | |
249 const uword ii = aa_mem[i]; | |
250 | |
251 arma_debug_check( (ii >= m_n_elem) , "Mat::elem(): index out of bounds" ); | |
252 | |
253 if(is_same_type<op_type, op_subview_elem_equ >::value == true) { m_mem[ii] = X[i]; } | |
254 else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { m_mem[ii] += X[i]; } | |
255 else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { m_mem[ii] -= X[i]; } | |
256 else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { m_mem[ii] *= X[i]; } | |
257 else if(is_same_type<op_type, op_subview_elem_inplace_div >::value == true) { m_mem[ii] /= X[i]; } | |
258 } | |
259 } | |
260 else | |
261 { | |
262 arma_extra_debug_print("subview_elem1::inplace_op(): aliasing or prefer_at_accessor detected"); | |
263 | |
264 const unwrap_check<typename Proxy<T2>::stored_type> tmp(P.Q, m_local); | |
265 const Mat<eT>& M = tmp.M; | |
266 | |
267 const eT* X = M.memptr(); | |
268 | |
269 uword i,j; | |
270 for(i=0, j=1; j<aa_n_elem; i+=2, j+=2) | |
271 { | |
272 const uword ii = aa_mem[i]; | |
273 const uword jj = aa_mem[j]; | |
274 | |
275 arma_debug_check( ( (ii >= m_n_elem) || (jj >= m_n_elem) ), "Mat::elem(): index out of bounds" ); | |
276 | |
277 if(is_same_type<op_type, op_subview_elem_equ >::value == true) { m_mem[ii] = X[i]; m_mem[jj] = X[j]; } | |
278 else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { m_mem[ii] += X[i]; m_mem[jj] += X[j]; } | |
279 else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { m_mem[ii] -= X[i]; m_mem[jj] -= X[j]; } | |
280 else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { m_mem[ii] *= X[i]; m_mem[jj] *= X[j]; } | |
281 else if(is_same_type<op_type, op_subview_elem_inplace_div >::value == true) { m_mem[ii] /= X[i]; m_mem[jj] /= X[j]; } | |
282 } | |
283 | |
284 if(i < aa_n_elem) | |
285 { | |
286 const uword ii = aa_mem[i]; | |
287 | |
288 arma_debug_check( (ii >= m_n_elem) , "Mat::elem(): index out of bounds" ); | |
289 | |
290 if(is_same_type<op_type, op_subview_elem_equ >::value == true) { m_mem[ii] = X[i]; } | |
291 else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { m_mem[ii] += X[i]; } | |
292 else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { m_mem[ii] -= X[i]; } | |
293 else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { m_mem[ii] *= X[i]; } | |
294 else if(is_same_type<op_type, op_subview_elem_inplace_div >::value == true) { m_mem[ii] /= X[i]; } | |
295 } | |
296 } | |
297 } | |
298 | |
299 | |
300 | |
301 // | |
302 // | |
303 | |
304 | |
305 | |
306 template<typename eT, typename T1> | |
307 inline | |
308 void | |
309 subview_elem1<eT,T1>::fill(const eT val) | |
310 { | |
311 arma_extra_debug_sigprint(); | |
312 | |
313 inplace_op<op_subview_elem_equ>(val); | |
314 } | |
315 | |
316 | |
317 | |
318 template<typename eT, typename T1> | |
319 inline | |
320 void | |
321 subview_elem1<eT,T1>::zeros() | |
322 { | |
323 arma_extra_debug_sigprint(); | |
324 | |
325 inplace_op<op_subview_elem_equ>(eT(0)); | |
326 } | |
327 | |
328 | |
329 | |
330 template<typename eT, typename T1> | |
331 inline | |
332 void | |
333 subview_elem1<eT,T1>::ones() | |
334 { | |
335 arma_extra_debug_sigprint(); | |
336 | |
337 inplace_op<op_subview_elem_equ>(eT(1)); | |
338 } | |
339 | |
340 | |
341 | |
342 template<typename eT, typename T1> | |
343 inline | |
344 void | |
345 subview_elem1<eT,T1>::operator+= (const eT val) | |
346 { | |
347 arma_extra_debug_sigprint(); | |
348 | |
349 inplace_op<op_subview_elem_inplace_plus>(val); | |
350 } | |
351 | |
352 | |
353 | |
354 template<typename eT, typename T1> | |
355 inline | |
356 void | |
357 subview_elem1<eT,T1>::operator-= (const eT val) | |
358 { | |
359 arma_extra_debug_sigprint(); | |
360 | |
361 inplace_op<op_subview_elem_inplace_minus>(val); | |
362 } | |
363 | |
364 | |
365 | |
366 template<typename eT, typename T1> | |
367 inline | |
368 void | |
369 subview_elem1<eT,T1>::operator*= (const eT val) | |
370 { | |
371 arma_extra_debug_sigprint(); | |
372 | |
373 inplace_op<op_subview_elem_inplace_schur>(val); | |
374 } | |
375 | |
376 | |
377 | |
378 template<typename eT, typename T1> | |
379 inline | |
380 void | |
381 subview_elem1<eT,T1>::operator/= (const eT val) | |
382 { | |
383 arma_extra_debug_sigprint(); | |
384 | |
385 inplace_op<op_subview_elem_inplace_div>(val); | |
386 } | |
387 | |
388 | |
389 | |
390 // | |
391 // | |
392 | |
393 | |
394 | |
395 template<typename eT, typename T1> | |
396 template<typename T2> | |
397 inline | |
398 void | |
399 subview_elem1<eT,T1>::operator_equ(const subview_elem1<eT,T2>& x) | |
400 { | |
401 arma_extra_debug_sigprint(); | |
402 | |
403 inplace_op<op_subview_elem_equ>(x); | |
404 } | |
405 | |
406 | |
407 | |
408 | |
409 template<typename eT, typename T1> | |
410 template<typename T2> | |
411 inline | |
412 void | |
413 subview_elem1<eT,T1>::operator= (const subview_elem1<eT,T2>& x) | |
414 { | |
415 arma_extra_debug_sigprint(); | |
416 | |
417 (*this).operator_equ(x); | |
418 } | |
419 | |
420 | |
421 | |
422 //! work around compiler bugs | |
423 template<typename eT, typename T1> | |
424 inline | |
425 void | |
426 subview_elem1<eT,T1>::operator= (const subview_elem1<eT,T1>& x) | |
427 { | |
428 arma_extra_debug_sigprint(); | |
429 | |
430 (*this).operator_equ(x); | |
431 } | |
432 | |
433 | |
434 | |
435 template<typename eT, typename T1> | |
436 template<typename T2> | |
437 inline | |
438 void | |
439 subview_elem1<eT,T1>::operator+= (const subview_elem1<eT,T2>& x) | |
440 { | |
441 arma_extra_debug_sigprint(); | |
442 | |
443 inplace_op<op_subview_elem_inplace_plus>(x); | |
444 } | |
445 | |
446 | |
447 | |
448 template<typename eT, typename T1> | |
449 template<typename T2> | |
450 inline | |
451 void | |
452 subview_elem1<eT,T1>::operator-= (const subview_elem1<eT,T2>& x) | |
453 { | |
454 arma_extra_debug_sigprint(); | |
455 | |
456 inplace_op<op_subview_elem_inplace_minus>(x); | |
457 } | |
458 | |
459 | |
460 | |
461 template<typename eT, typename T1> | |
462 template<typename T2> | |
463 inline | |
464 void | |
465 subview_elem1<eT,T1>::operator%= (const subview_elem1<eT,T2>& x) | |
466 { | |
467 arma_extra_debug_sigprint(); | |
468 | |
469 inplace_op<op_subview_elem_inplace_schur>(x); | |
470 } | |
471 | |
472 | |
473 | |
474 template<typename eT, typename T1> | |
475 template<typename T2> | |
476 inline | |
477 void | |
478 subview_elem1<eT,T1>::operator/= (const subview_elem1<eT,T2>& x) | |
479 { | |
480 arma_extra_debug_sigprint(); | |
481 | |
482 inplace_op<op_subview_elem_inplace_div>(x); | |
483 } | |
484 | |
485 | |
486 | |
487 template<typename eT, typename T1> | |
488 template<typename T2> | |
489 inline | |
490 void | |
491 subview_elem1<eT,T1>::operator= (const Base<eT,T2>& x) | |
492 { | |
493 arma_extra_debug_sigprint(); | |
494 | |
495 inplace_op<op_subview_elem_equ>(x); | |
496 } | |
497 | |
498 | |
499 | |
500 template<typename eT, typename T1> | |
501 template<typename T2> | |
502 inline | |
503 void | |
504 subview_elem1<eT,T1>::operator+= (const Base<eT,T2>& x) | |
505 { | |
506 arma_extra_debug_sigprint(); | |
507 | |
508 inplace_op<op_subview_elem_inplace_plus>(x); | |
509 } | |
510 | |
511 | |
512 | |
513 template<typename eT, typename T1> | |
514 template<typename T2> | |
515 inline | |
516 void | |
517 subview_elem1<eT,T1>::operator-= (const Base<eT,T2>& x) | |
518 { | |
519 arma_extra_debug_sigprint(); | |
520 | |
521 inplace_op<op_subview_elem_inplace_minus>(x); | |
522 } | |
523 | |
524 | |
525 | |
526 template<typename eT, typename T1> | |
527 template<typename T2> | |
528 inline | |
529 void | |
530 subview_elem1<eT,T1>::operator%= (const Base<eT,T2>& x) | |
531 { | |
532 arma_extra_debug_sigprint(); | |
533 | |
534 inplace_op<op_subview_elem_inplace_schur>(x); | |
535 } | |
536 | |
537 | |
538 | |
539 template<typename eT, typename T1> | |
540 template<typename T2> | |
541 inline | |
542 void | |
543 subview_elem1<eT,T1>::operator/= (const Base<eT,T2>& x) | |
544 { | |
545 arma_extra_debug_sigprint(); | |
546 | |
547 inplace_op<op_subview_elem_inplace_div>(x); | |
548 } | |
549 | |
550 | |
551 | |
552 // | |
553 // | |
554 | |
555 | |
556 | |
557 template<typename eT, typename T1> | |
558 inline | |
559 void | |
560 subview_elem1<eT,T1>::extract(Mat<eT>& actual_out, const subview_elem1<eT,T1>& in) | |
561 { | |
562 arma_extra_debug_sigprint(); | |
563 | |
564 const unwrap_check_mixed<T1> tmp1(in.a.get_ref(), actual_out); | |
565 const umat& aa = tmp1.M; | |
566 | |
567 arma_debug_check | |
568 ( | |
569 ( aa.is_vec() == false ), | |
570 "Mat::elem(): given object is not a vector" | |
571 ); | |
572 | |
573 const uword* aa_mem = aa.memptr(); | |
574 const uword aa_n_elem = aa.n_elem; | |
575 | |
576 const Mat<eT>& m_local = in.m; | |
577 | |
578 const eT* m_mem = m_local.memptr(); | |
579 const uword m_n_elem = m_local.n_elem; | |
580 | |
581 const bool alias = (&actual_out == &m_local); | |
582 | |
583 arma_extra_debug_warn(alias, "subview_elem1::extract(): aliasing detected"); | |
584 | |
585 Mat<eT>* tmp_out = alias ? new Mat<eT>() : 0; | |
586 Mat<eT>& out = alias ? *tmp_out : actual_out; | |
587 | |
588 out.set_size(aa_n_elem, 1); | |
589 | |
590 eT* out_mem = out.memptr(); | |
591 | |
592 uword i,j; | |
593 for(i=0, j=1; j<aa_n_elem; i+=2, j+=2) | |
594 { | |
595 const uword ii = aa_mem[i]; | |
596 const uword jj = aa_mem[j]; | |
597 | |
598 arma_debug_check( ( (ii >= m_n_elem) || (jj >= m_n_elem) ), "Mat::elem(): index out of bounds" ); | |
599 | |
600 out_mem[i] = m_mem[ii]; | |
601 out_mem[j] = m_mem[jj]; | |
602 } | |
603 | |
604 if(i < aa_n_elem) | |
605 { | |
606 const uword ii = aa_mem[i]; | |
607 | |
608 arma_debug_check( (ii >= m_n_elem) , "Mat::elem(): index out of bounds" ); | |
609 | |
610 out_mem[i] = m_mem[ii]; | |
611 } | |
612 | |
613 if(alias == true) | |
614 { | |
615 actual_out = out; | |
616 delete tmp_out; | |
617 } | |
618 } | |
619 | |
620 | |
621 | |
622 template<typename eT, typename T1> | |
623 template<typename op_type> | |
624 inline | |
625 void | |
626 subview_elem1<eT,T1>::mat_inplace_op(Mat<eT>& out, const subview_elem1& in) | |
627 { | |
628 arma_extra_debug_sigprint(); | |
629 | |
630 const unwrap<T1> tmp1(in.a.get_ref()); | |
631 const umat& aa = tmp1.M; | |
632 | |
633 arma_debug_check | |
634 ( | |
635 ( aa.is_vec() == false ), | |
636 "Mat::elem(): given object is not a vector" | |
637 ); | |
638 | |
639 const uword* aa_mem = aa.memptr(); | |
640 const uword aa_n_elem = aa.n_elem; | |
641 | |
642 const unwrap_check< Mat<eT> > tmp2(in.m, out); | |
643 const Mat<eT>& m_local = tmp2.M; | |
644 | |
645 const eT* m_mem = m_local.memptr(); | |
646 const uword m_n_elem = m_local.n_elem; | |
647 | |
648 arma_debug_check( (out.n_elem != aa_n_elem), "Mat::elem(): size mismatch" ); | |
649 | |
650 eT* out_mem = out.memptr(); | |
651 | |
652 uword i,j; | |
653 for(i=0, j=1; j<aa_n_elem; i+=2, j+=2) | |
654 { | |
655 const uword ii = aa_mem[i]; | |
656 const uword jj = aa_mem[j]; | |
657 | |
658 arma_debug_check( ( (ii >= m_n_elem) || (jj >= m_n_elem) ), "Mat::elem(): index out of bounds" ); | |
659 | |
660 if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { out_mem[i] += m_mem[ii]; out_mem[j] += m_mem[jj]; } | |
661 else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { out_mem[i] -= m_mem[ii]; out_mem[j] -= m_mem[jj]; } | |
662 else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { out_mem[i] *= m_mem[ii]; out_mem[j] *= m_mem[jj]; } | |
663 else if(is_same_type<op_type, op_subview_elem_inplace_div >::value == true) { out_mem[i] /= m_mem[ii]; out_mem[j] /= m_mem[jj]; } | |
664 } | |
665 | |
666 if(i < aa_n_elem) | |
667 { | |
668 const uword ii = aa_mem[i]; | |
669 | |
670 arma_debug_check( (ii >= m_n_elem) , "Mat::elem(): index out of bounds" ); | |
671 | |
672 if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { out_mem[i] += m_mem[ii]; } | |
673 else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { out_mem[i] -= m_mem[ii]; } | |
674 else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { out_mem[i] *= m_mem[ii]; } | |
675 else if(is_same_type<op_type, op_subview_elem_inplace_div >::value == true) { out_mem[i] /= m_mem[ii]; } | |
676 } | |
677 } | |
678 | |
679 | |
680 | |
681 template<typename eT, typename T1> | |
682 inline | |
683 void | |
684 subview_elem1<eT,T1>::plus_inplace(Mat<eT>& out, const subview_elem1& in) | |
685 { | |
686 arma_extra_debug_sigprint(); | |
687 | |
688 mat_inplace_op<op_subview_elem_inplace_plus>(out, in); | |
689 } | |
690 | |
691 | |
692 | |
693 template<typename eT, typename T1> | |
694 inline | |
695 void | |
696 subview_elem1<eT,T1>::minus_inplace(Mat<eT>& out, const subview_elem1& in) | |
697 { | |
698 arma_extra_debug_sigprint(); | |
699 | |
700 mat_inplace_op<op_subview_elem_inplace_minus>(out, in); | |
701 } | |
702 | |
703 | |
704 | |
705 template<typename eT, typename T1> | |
706 inline | |
707 void | |
708 subview_elem1<eT,T1>::schur_inplace(Mat<eT>& out, const subview_elem1& in) | |
709 { | |
710 arma_extra_debug_sigprint(); | |
711 | |
712 mat_inplace_op<op_subview_elem_inplace_schur>(out, in); | |
713 } | |
714 | |
715 | |
716 | |
717 template<typename eT, typename T1> | |
718 inline | |
719 void | |
720 subview_elem1<eT,T1>::div_inplace(Mat<eT>& out, const subview_elem1& in) | |
721 { | |
722 arma_extra_debug_sigprint(); | |
723 | |
724 mat_inplace_op<op_subview_elem_inplace_div>(out, in); | |
725 } | |
726 | |
727 | |
728 | |
729 //! @} |