Mercurial > hg > octave-lyh
annotate liboctave/dRowVector.cc @ 14685:4460c4fb20e6 stable rc-3-6-2-2
3.6.2-rc2 release candidate
* configure.ac (AC_INIT): Version is now 3.6.2-rc2.
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Thu, 24 May 2012 15:35:50 -0400 |
| parents | 72c96de7a403 |
| children | 460a3c6d8bf1 |
| rev | line source |
|---|---|
| 1993 | 1 // RowVector manipulations. |
| 458 | 2 /* |
| 3 | |
|
14138
72c96de7a403
maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
4 Copyright (C) 1994-2012 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 | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 458 | 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 | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 458 | 21 |
| 22 */ | |
| 23 | |
| 24 #ifdef HAVE_CONFIG_H | |
| 1192 | 25 #include <config.h> |
| 458 | 26 #endif |
| 27 | |
| 3503 | 28 #include <iostream> |
| 458 | 29 |
| 4669 | 30 #include "Array-util.h" |
| 1847 | 31 #include "f77-fcn.h" |
|
7503
8c32f95c2639
convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents:
7482
diff
changeset
|
32 #include "functor.h" |
| 1368 | 33 #include "lo-error.h" |
| 458 | 34 #include "mx-base.h" |
| 35 #include "mx-inlines.cc" | |
| 1650 | 36 #include "oct-cmplx.h" |
| 458 | 37 |
| 38 // Fortran functions we call. | |
| 39 | |
| 40 extern "C" | |
| 41 { | |
| 4552 | 42 F77_RET_T |
| 43 F77_FUNC (dgemv, DGEMV) (F77_CONST_CHAR_ARG_DECL, | |
| 11518 | 44 const octave_idx_type&, const octave_idx_type&, |
| 45 const double&, const double*, | |
| 46 const octave_idx_type&, const double*, | |
| 47 const octave_idx_type&, const double&, | |
| 48 double*, const octave_idx_type& | |
|
10314
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10158
diff
changeset
|
49 F77_CHAR_ARG_LEN_DECL); |
| 5983 | 50 F77_RET_T |
| 11518 | 51 F77_FUNC (xddot, XDDOT) (const octave_idx_type&, const double*, |
| 52 const octave_idx_type&, const double*, | |
| 53 const octave_idx_type&, double&); | |
| 458 | 54 } |
| 55 | |
| 1360 | 56 // Row Vector class. |
| 458 | 57 |
| 2386 | 58 bool |
| 458 | 59 RowVector::operator == (const RowVector& a) const |
| 60 { | |
| 5275 | 61 octave_idx_type len = length (); |
| 458 | 62 if (len != a.length ()) |
| 63 return 0; | |
|
9550
3d6a9aea2aea
refactor binary & bool ops in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents:
8999
diff
changeset
|
64 return mx_inline_equal (len, data (), a.data ()); |
| 458 | 65 } |
| 66 | |
| 2386 | 67 bool |
| 458 | 68 RowVector::operator != (const RowVector& a) const |
| 69 { | |
| 70 return !(*this == a); | |
| 71 } | |
| 72 | |
| 73 RowVector& | |
| 5275 | 74 RowVector::insert (const RowVector& a, octave_idx_type c) |
| 458 | 75 { |
| 5275 | 76 octave_idx_type a_len = a.length (); |
| 4316 | 77 |
| 1699 | 78 if (c < 0 || c + a_len > length ()) |
| 458 | 79 { |
| 80 (*current_liboctave_error_handler) ("range error for insert"); | |
| 81 return *this; | |
| 82 } | |
| 83 | |
| 4316 | 84 if (a_len > 0) |
| 85 { | |
| 86 make_unique (); | |
| 87 | |
| 5275 | 88 for (octave_idx_type i = 0; i < a_len; i++) |
|
10314
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10158
diff
changeset
|
89 xelem (c+i) = a.elem (i); |
| 4316 | 90 } |
| 458 | 91 |
| 92 return *this; | |
| 93 } | |
| 94 | |
| 95 RowVector& | |
| 96 RowVector::fill (double val) | |
| 97 { | |
| 5275 | 98 octave_idx_type len = length (); |
| 4316 | 99 |
| 458 | 100 if (len > 0) |
| 4316 | 101 { |
| 102 make_unique (); | |
| 103 | |
| 5275 | 104 for (octave_idx_type i = 0; i < len; i++) |
|
10314
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10158
diff
changeset
|
105 xelem (i) = val; |
| 4316 | 106 } |
| 107 | |
| 458 | 108 return *this; |
| 109 } | |
| 110 | |
| 111 RowVector& | |
| 5275 | 112 RowVector::fill (double val, octave_idx_type c1, octave_idx_type c2) |
| 458 | 113 { |
| 5275 | 114 octave_idx_type len = length (); |
| 4316 | 115 |
| 458 | 116 if (c1 < 0 || c2 < 0 || c1 >= len || c2 >= len) |
| 117 { | |
| 118 (*current_liboctave_error_handler) ("range error for fill"); | |
| 119 return *this; | |
| 120 } | |
| 121 | |
| 5275 | 122 if (c1 > c2) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; } |
| 458 | 123 |
| 4316 | 124 if (c2 >= c1) |
| 125 { | |
| 126 make_unique (); | |
| 127 | |
| 5275 | 128 for (octave_idx_type i = c1; i <= c2; i++) |
|
10314
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10158
diff
changeset
|
129 xelem (i) = val; |
| 4316 | 130 } |
| 458 | 131 |
| 132 return *this; | |
| 133 } | |
| 134 | |
| 135 RowVector | |
| 136 RowVector::append (const RowVector& a) const | |
| 137 { | |
| 5275 | 138 octave_idx_type len = length (); |
| 139 octave_idx_type nc_insert = len; | |
| 458 | 140 RowVector retval (len + a.length ()); |
| 141 retval.insert (*this, 0); | |
| 142 retval.insert (a, nc_insert); | |
| 143 return retval; | |
| 144 } | |
| 145 | |
| 146 ColumnVector | |
| 147 RowVector::transpose (void) const | |
| 148 { | |
|
7789
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
7503
diff
changeset
|
149 return MArray<double>::transpose(); |
| 458 | 150 } |
| 151 | |
| 152 RowVector | |
| 1205 | 153 real (const ComplexRowVector& a) |
| 154 { | |
|
10363
a0728e81ed25
improve diag matrix interface & implementation
Jaroslav Hajek <highegg@gmail.com>
parents:
10314
diff
changeset
|
155 return do_mx_unary_op<double, Complex> (a, mx_inline_real); |
| 1205 | 156 } |
| 157 | |
| 158 RowVector | |
| 159 imag (const ComplexRowVector& a) | |
| 160 { | |
|
10363
a0728e81ed25
improve diag matrix interface & implementation
Jaroslav Hajek <highegg@gmail.com>
parents:
10314
diff
changeset
|
161 return do_mx_unary_op<double, Complex> (a, mx_inline_imag); |
| 1205 | 162 } |
| 163 | |
| 164 RowVector | |
| 5275 | 165 RowVector::extract (octave_idx_type c1, octave_idx_type c2) const |
| 458 | 166 { |
| 5275 | 167 if (c1 > c2) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; } |
| 458 | 168 |
| 5275 | 169 octave_idx_type new_c = c2 - c1 + 1; |
| 458 | 170 |
| 171 RowVector result (new_c); | |
| 172 | |
| 5275 | 173 for (octave_idx_type i = 0; i < new_c; i++) |
| 4316 | 174 result.xelem (i) = elem (c1+i); |
| 175 | |
| 176 return result; | |
| 177 } | |
| 178 | |
| 179 RowVector | |
| 5275 | 180 RowVector::extract_n (octave_idx_type r1, octave_idx_type n) const |
| 4316 | 181 { |
| 182 RowVector result (n); | |
| 183 | |
| 5275 | 184 for (octave_idx_type i = 0; i < n; i++) |
| 4316 | 185 result.xelem (i) = elem (r1+i); |
| 458 | 186 |
| 187 return result; | |
| 188 } | |
| 189 | |
| 190 // row vector by matrix -> row vector | |
| 191 | |
| 192 RowVector | |
| 193 operator * (const RowVector& v, const Matrix& a) | |
| 194 { | |
| 1947 | 195 RowVector retval; |
| 196 | |
| 5275 | 197 octave_idx_type len = v.length (); |
| 1947 | 198 |
| 5275 | 199 octave_idx_type a_nr = a.rows (); |
| 200 octave_idx_type a_nc = a.cols (); | |
| 2386 | 201 |
| 202 if (a_nr != len) | |
| 203 gripe_nonconformant ("operator *", 1, len, a_nr, a_nc); | |
| 1947 | 204 else |
| 458 | 205 { |
| 1947 | 206 if (len == 0) |
|
10314
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10158
diff
changeset
|
207 retval.resize (a_nc, 0.0); |
| 1947 | 208 else |
|
10314
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10158
diff
changeset
|
209 { |
|
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10158
diff
changeset
|
210 // Transpose A to form A'*x == (x'*A)' |
| 1947 | 211 |
|
10314
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10158
diff
changeset
|
212 octave_idx_type ld = a_nr; |
| 1947 | 213 |
|
10314
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10158
diff
changeset
|
214 retval.resize (a_nc); |
|
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10158
diff
changeset
|
215 double *y = retval.fortran_vec (); |
| 1947 | 216 |
|
10314
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10158
diff
changeset
|
217 F77_XFCN (dgemv, DGEMV, (F77_CONST_CHAR_ARG2 ("T", 1), |
|
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10158
diff
changeset
|
218 a_nr, a_nc, 1.0, a.data (), |
|
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10158
diff
changeset
|
219 ld, v.data (), 1, 0.0, y, 1 |
|
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10158
diff
changeset
|
220 F77_CHAR_ARG_LEN (1))); |
|
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10158
diff
changeset
|
221 } |
| 458 | 222 } |
| 223 | |
| 1947 | 224 return retval; |
| 458 | 225 } |
| 226 | |
| 227 // other operations | |
| 228 | |
| 229 double | |
| 230 RowVector::min (void) const | |
| 231 { | |
| 5275 | 232 octave_idx_type len = length (); |
| 458 | 233 if (len == 0) |
| 234 return 0; | |
| 235 | |
| 236 double res = elem (0); | |
| 237 | |
| 5275 | 238 for (octave_idx_type i = 1; i < len; i++) |
| 458 | 239 if (elem (i) < res) |
| 240 res = elem (i); | |
| 241 | |
| 242 return res; | |
| 243 } | |
| 244 | |
| 245 double | |
| 246 RowVector::max (void) const | |
| 247 { | |
| 5275 | 248 octave_idx_type len = length (); |
| 458 | 249 if (len == 0) |
| 250 return 0; | |
| 251 | |
| 252 double res = elem (0); | |
| 253 | |
| 5275 | 254 for (octave_idx_type i = 1; i < len; i++) |
| 458 | 255 if (elem (i) > res) |
| 256 res = elem (i); | |
| 257 | |
| 258 return res; | |
| 259 } | |
| 260 | |
| 3504 | 261 std::ostream& |
| 262 operator << (std::ostream& os, const RowVector& a) | |
| 458 | 263 { |
| 264 // int field_width = os.precision () + 7; | |
| 1360 | 265 |
| 5275 | 266 for (octave_idx_type i = 0; i < a.length (); i++) |
| 458 | 267 os << " " /* setw (field_width) */ << a.elem (i); |
| 268 return os; | |
| 269 } | |
| 270 | |
| 3504 | 271 std::istream& |
| 272 operator >> (std::istream& is, RowVector& a) | |
| 458 | 273 { |
| 5275 | 274 octave_idx_type len = a.length(); |
| 458 | 275 |
|
8999
dc07bc4157b8
allow empty matrices in stream input operators
Jaroslav Hajek <highegg@gmail.com>
parents:
8920
diff
changeset
|
276 if (len > 0) |
| 458 | 277 { |
| 278 double tmp; | |
| 5275 | 279 for (octave_idx_type i = 0; i < len; i++) |
| 458 | 280 { |
| 281 is >> tmp; | |
| 282 if (is) | |
| 283 a.elem (i) = tmp; | |
| 284 else | |
| 285 break; | |
| 286 } | |
| 287 } | |
| 532 | 288 return is; |
| 458 | 289 } |
| 290 | |
| 1205 | 291 // other operations |
| 292 | |
| 293 RowVector | |
| 5275 | 294 linspace (double x1, double x2, octave_idx_type n) |
| 1205 | 295 { |
|
9653
e087d7c77ff9
improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents:
9550
diff
changeset
|
296 if (n < 1) n = 1; |
|
e087d7c77ff9
improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents:
9550
diff
changeset
|
297 |
|
e087d7c77ff9
improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents:
9550
diff
changeset
|
298 NoAlias<RowVector> retval (n); |
| 1205 | 299 |
|
9653
e087d7c77ff9
improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents:
9550
diff
changeset
|
300 double delta = (x2 - x1) / (n - 1); |
|
9658
3429c956de6f
extend linspace & fix up liboctave rewrite
Jaroslav Hajek <highegg@gmail.com>
parents:
9653
diff
changeset
|
301 retval(0) = x1; |
|
9653
e087d7c77ff9
improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents:
9550
diff
changeset
|
302 for (octave_idx_type i = 1; i < n-1; i++) |
|
9658
3429c956de6f
extend linspace & fix up liboctave rewrite
Jaroslav Hajek <highegg@gmail.com>
parents:
9653
diff
changeset
|
303 retval(i) = x1 + i*delta; |
|
9653
e087d7c77ff9
improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents:
9550
diff
changeset
|
304 retval(n-1) = x2; |
| 1205 | 305 |
| 306 return retval; | |
| 307 } | |
| 308 | |
| 309 // row vector by column vector -> scalar | |
| 310 | |
| 311 double | |
| 312 operator * (const RowVector& v, const ColumnVector& a) | |
| 313 { | |
| 1947 | 314 double retval = 0.0; |
| 315 | |
| 5275 | 316 octave_idx_type len = v.length (); |
| 1947 | 317 |
| 5275 | 318 octave_idx_type a_len = a.length (); |
| 2386 | 319 |
| 320 if (len != a_len) | |
| 321 gripe_nonconformant ("operator *", len, a_len); | |
| 1947 | 322 else if (len != 0) |
| 5983 | 323 F77_FUNC (xddot, XDDOT) (len, v.data (), 1, a.data (), 1, retval); |
| 1205 | 324 |
| 1947 | 325 return retval; |
| 1205 | 326 } |
| 327 | |
| 328 Complex | |
| 329 operator * (const RowVector& v, const ComplexColumnVector& a) | |
| 330 { | |
| 331 ComplexRowVector tmp (v); | |
| 332 return tmp * a; | |
| 333 } |