Mercurial > octave-nkf
annotate src/ov-scalar.cc @ 7961:a5d1e27ee1f4 ss-3-1-51
3.1.51 snapshot
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Tue, 22 Jul 2008 11:40:48 -0400 |
| parents | f336dd8e96d0 |
| children | c777f3ce02d8 |
| rev | line source |
|---|---|
| 2376 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1996, 1997, 1998, 2000, 2002, 2003, 2004, 2005, 2006, |
| 4 2007 John W. Eaton | |
| 2376 | 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. | |
| 2376 | 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/>. | |
| 2376 | 21 |
| 22 */ | |
| 23 | |
| 24 #ifdef HAVE_CONFIG_H | |
| 25 #include <config.h> | |
| 26 #endif | |
| 27 | |
| 3503 | 28 #include <iostream> |
| 2901 | 29 |
| 4944 | 30 #include "data-conv.h" |
| 31 #include "mach-info.h" | |
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32 #include "lo-specfun.h" |
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33 #include "lo-mappers.h" |
| 4944 | 34 |
| 2376 | 35 #include "defun.h" |
| 36 #include "gripes.h" | |
| 37 #include "oct-obj.h" | |
| 4944 | 38 #include "oct-stream.h" |
| 2376 | 39 #include "ov-scalar.h" |
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40 #include "ov-float.h" |
| 3223 | 41 #include "ov-base.h" |
| 42 #include "ov-base-scalar.h" | |
| 43 #include "ov-base-scalar.cc" | |
| 2423 | 44 #include "ov-re-mat.h" |
| 2376 | 45 #include "ov-typeinfo.h" |
| 46 #include "pr-output.h" | |
| 47 #include "xdiv.h" | |
| 48 #include "xpow.h" | |
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49 #include "ops.h" |
| 2376 | 50 |
| 4687 | 51 #include "ls-oct-ascii.h" |
| 52 #include "ls-hdf5.h" | |
| 53 | |
| 3223 | 54 template class octave_base_scalar<double>; |
| 55 | |
| 3219 | 56 DEFINE_OCTAVE_ALLOCATOR (octave_scalar); |
| 2376 | 57 |
| 4612 | 58 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_scalar, "scalar", "double"); |
| 2376 | 59 |
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60 static octave_base_value * |
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61 default_numeric_demotion_function (const octave_base_value& a) |
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62 { |
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63 CAST_CONV_ARG (const octave_scalar&); |
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64 |
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65 return new octave_float_scalar (v.float_value ()); |
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66 } |
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67 |
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68 octave_base_value::type_conv_fcn |
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69 octave_scalar::numeric_demotion_function (void) const |
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70 { |
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71 return default_numeric_demotion_function; |
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72 } |
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73 |
| 2376 | 74 octave_value |
| 5885 | 75 octave_scalar::do_index_op (const octave_value_list& idx, bool resize_ok) |
| 2376 | 76 { |
| 77 octave_value retval; | |
| 78 | |
| 3933 | 79 if (idx.valid_scalar_indices ()) |
| 2376 | 80 retval = scalar; |
| 81 else | |
| 82 { | |
| 5775 | 83 // FIXME -- this doesn't solve the problem of |
| 2376 | 84 // |
| 85 // a = 1; a([1,1], [1,1], [1,1]) | |
| 86 // | |
| 87 // and similar constructions. Hmm... | |
| 88 | |
| 5775 | 89 // FIXME -- using this constructor avoids narrowing the |
| 2423 | 90 // 1x1 matrix back to a scalar value. Need a better solution |
| 91 // to this problem. | |
| 92 | |
| 93 octave_value tmp (new octave_matrix (matrix_value ())); | |
| 2376 | 94 |
| 3933 | 95 retval = tmp.do_index_op (idx, resize_ok); |
| 2376 | 96 } |
| 97 | |
| 98 return retval; | |
| 99 } | |
| 100 | |
| 5731 | 101 octave_value |
| 102 octave_scalar::resize (const dim_vector& dv, bool fill) const | |
| 103 { | |
| 104 if (fill) | |
| 105 { | |
| 106 NDArray retval (dv, NDArray::resize_fill_value()); | |
| 107 | |
| 108 if (dv.numel ()) | |
| 109 retval(0) = scalar; | |
| 110 | |
| 111 return retval; | |
| 112 } | |
| 113 else | |
| 114 { | |
| 115 NDArray retval (dv); | |
| 116 | |
| 117 if (dv.numel ()) | |
| 118 retval(0) = scalar; | |
| 119 | |
| 120 return retval; | |
| 121 } | |
| 122 } | |
| 123 | |
| 2376 | 124 octave_value |
| 5279 | 125 octave_scalar::convert_to_str_internal (bool, bool, char type) const |
| 2376 | 126 { |
| 127 octave_value retval; | |
| 128 | |
| 129 if (xisnan (scalar)) | |
| 130 ::error ("invalid conversion from NaN to character"); | |
| 131 else | |
| 132 { | |
| 4100 | 133 int ival = NINT (scalar); |
| 134 | |
| 135 if (ival < 0 || ival > UCHAR_MAX) | |
| 136 { | |
| 5775 | 137 // FIXME -- is there something better we could do? |
| 4100 | 138 |
| 139 ival = 0; | |
| 140 | |
| 141 ::warning ("range error for conversion to character value"); | |
| 142 } | |
| 143 | |
| 5279 | 144 retval = octave_value (std::string (1, static_cast<char> (ival)), type); |
| 2376 | 145 } |
| 146 | |
| 147 return retval; | |
| 148 } | |
| 149 | |
| 4687 | 150 bool |
| 6974 | 151 octave_scalar::save_ascii (std::ostream& os) |
| 4687 | 152 { |
| 153 double d = double_value (); | |
| 154 | |
| 5958 | 155 octave_write_double (os, d); |
| 156 | |
| 157 os << "\n"; | |
| 4687 | 158 |
| 159 return true; | |
| 160 } | |
| 161 | |
| 162 bool | |
| 163 octave_scalar::load_ascii (std::istream& is) | |
| 164 { | |
| 165 scalar = octave_read_double (is); | |
| 166 if (!is) | |
| 167 { | |
| 168 error ("load: failed to load scalar constant"); | |
| 169 return false; | |
| 170 } | |
| 171 | |
| 172 return true; | |
| 173 } | |
| 174 | |
| 175 bool | |
| 176 octave_scalar::save_binary (std::ostream& os, bool& /* save_as_floats */) | |
| 177 { | |
| 5760 | 178 char tmp = LS_DOUBLE; |
| 179 os.write (reinterpret_cast<char *> (&tmp), 1); | |
| 4687 | 180 double dtmp = double_value (); |
| 5760 | 181 os.write (reinterpret_cast<char *> (&dtmp), 8); |
| 4687 | 182 |
| 183 return true; | |
| 184 } | |
| 185 | |
| 186 bool | |
| 187 octave_scalar::load_binary (std::istream& is, bool swap, | |
| 4815 | 188 oct_mach_info::float_format fmt) |
| 4687 | 189 { |
| 190 char tmp; | |
| 5760 | 191 if (! is.read (reinterpret_cast<char *> (&tmp), 1)) |
| 4687 | 192 return false; |
| 193 | |
| 194 double dtmp; | |
| 5760 | 195 read_doubles (is, &dtmp, static_cast<save_type> (tmp), 1, swap, fmt); |
| 4687 | 196 if (error_state || ! is) |
| 197 return false; | |
| 198 | |
| 199 scalar = dtmp; | |
| 200 return true; | |
| 201 } | |
| 202 | |
| 203 #if defined (HAVE_HDF5) | |
| 4944 | 204 |
| 4687 | 205 bool |
| 206 octave_scalar::save_hdf5 (hid_t loc_id, const char *name, | |
| 207 bool /* save_as_floats */) | |
| 208 { | |
| 209 hsize_t dimens[3]; | |
| 210 hid_t space_hid = -1, data_hid = -1; | |
| 211 bool retval = true; | |
| 212 | |
| 4815 | 213 space_hid = H5Screate_simple (0, dimens, 0); |
| 4687 | 214 if (space_hid < 0) return false; |
| 215 | |
| 216 data_hid = H5Dcreate (loc_id, name, H5T_NATIVE_DOUBLE, space_hid, | |
| 217 H5P_DEFAULT); | |
| 218 if (data_hid < 0) | |
| 219 { | |
| 220 H5Sclose (space_hid); | |
| 221 return false; | |
| 222 } | |
| 223 | |
| 224 double tmp = double_value (); | |
| 225 retval = H5Dwrite (data_hid, H5T_NATIVE_DOUBLE, H5S_ALL, H5S_ALL, | |
| 4815 | 226 H5P_DEFAULT, &tmp) >= 0; |
| 4687 | 227 |
| 228 H5Dclose (data_hid); | |
| 229 H5Sclose (space_hid); | |
| 4837 | 230 |
| 4687 | 231 return retval; |
| 232 } | |
| 233 | |
| 234 bool | |
| 235 octave_scalar::load_hdf5 (hid_t loc_id, const char *name, | |
| 236 bool /* have_h5giterate_bug */) | |
| 237 { | |
| 238 hid_t data_hid = H5Dopen (loc_id, name); | |
| 239 hid_t space_id = H5Dget_space (data_hid); | |
| 240 | |
| 241 hsize_t rank = H5Sget_simple_extent_ndims (space_id); | |
| 242 | |
| 243 if (rank != 0) | |
| 244 { | |
| 245 H5Dclose (data_hid); | |
| 246 return false; | |
| 247 } | |
| 248 | |
| 249 double dtmp; | |
| 250 if (H5Dread (data_hid, H5T_NATIVE_DOUBLE, H5S_ALL, H5S_ALL, | |
| 4815 | 251 H5P_DEFAULT, &dtmp) < 0) |
| 4687 | 252 { |
| 253 H5Dclose (data_hid); | |
| 254 return false; | |
| 255 } | |
| 256 | |
| 257 scalar = dtmp; | |
| 4837 | 258 |
| 4687 | 259 H5Dclose (data_hid); |
| 4837 | 260 |
| 4687 | 261 return true; |
| 262 } | |
| 4944 | 263 |
| 4687 | 264 #endif |
| 265 | |
| 5900 | 266 mxArray * |
| 267 octave_scalar::as_mxArray (void) const | |
| 268 { | |
| 269 mxArray *retval = new mxArray (mxDOUBLE_CLASS, 1, 1, mxREAL); | |
| 270 | |
| 271 double *pr = static_cast<double *> (retval->get_data ()); | |
| 272 | |
| 273 pr[0] = scalar; | |
| 274 | |
| 275 return retval; | |
| 276 } | |
| 277 | |
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278 #define SCALAR_MAPPER(MAP, FCN) \ |
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279 octave_value \ |
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280 octave_scalar::MAP (void) const \ |
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281 { \ |
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282 return octave_value (FCN (scalar)); \ |
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283 } |
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284 |
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285 #define CD_SCALAR_MAPPER(MAP, RFCN, CFCN, L1, L2) \ |
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286 octave_value \ |
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287 octave_scalar::MAP (void) const \ |
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288 { \ |
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289 return (scalar < L1 || scalar > L2 \ |
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290 ? octave_value (CFCN (Complex (scalar))) \ |
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291 : octave_value (RFCN (scalar))); \ |
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292 } |
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293 |
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294 static double |
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295 xconj (double x) |
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296 { |
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297 return x; |
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298 } |
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299 |
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300 SCALAR_MAPPER (erf, ::erf) |
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301 SCALAR_MAPPER (erfc, ::erfc) |
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302 SCALAR_MAPPER (gamma, xgamma) |
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303 CD_SCALAR_MAPPER (lgamma, xlgamma, xlgamma, 0.0, octave_Inf) |
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304 SCALAR_MAPPER (abs, ::fabs) |
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305 SCALAR_MAPPER (acos, ::acos) |
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306 CD_SCALAR_MAPPER (acosh, ::acosh, ::acosh, 1.0, octave_Inf) |
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307 SCALAR_MAPPER (angle, ::arg) |
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308 SCALAR_MAPPER (arg, ::arg) |
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309 CD_SCALAR_MAPPER (asin, ::asin, ::asin, -1.0, 1.0) |
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310 SCALAR_MAPPER (asinh, ::asinh) |
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311 SCALAR_MAPPER (atan, ::atan) |
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312 CD_SCALAR_MAPPER (atanh, ::atanh, ::atanh, -1.0, 1.0) |
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313 SCALAR_MAPPER (ceil, ::ceil) |
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314 SCALAR_MAPPER (conj, xconj) |
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315 SCALAR_MAPPER (cos, ::cos) |
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316 SCALAR_MAPPER (cosh, ::cosh) |
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317 SCALAR_MAPPER (exp, ::exp) |
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318 SCALAR_MAPPER (expm1, ::expm1) |
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319 SCALAR_MAPPER (fix, ::fix) |
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320 SCALAR_MAPPER (floor, ::floor) |
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321 SCALAR_MAPPER (imag, ::imag) |
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322 CD_SCALAR_MAPPER (log, ::log, std::log, 0.0, octave_Inf) |
| 7740 | 323 CD_SCALAR_MAPPER (log2, xlog2, xlog2, 0.0, octave_Inf) |
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324 CD_SCALAR_MAPPER (log10, ::log10, std::log10, 0.0, octave_Inf) |
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325 CD_SCALAR_MAPPER (log1p, ::log1p, ::log1p, -1.0, octave_Inf) |
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326 SCALAR_MAPPER (real, ::real) |
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327 SCALAR_MAPPER (round, xround) |
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99c410f7f0b0
implement mapper function for banker's rounding
Jaroslav Hajek <highegg@gmail.com>
parents:
7601
diff
changeset
|
328 SCALAR_MAPPER (roundb, xroundb) |
|
7503
8c32f95c2639
convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
329 SCALAR_MAPPER (signum, ::signum) |
|
8c32f95c2639
convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
330 SCALAR_MAPPER (sin, ::sin) |
|
8c32f95c2639
convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
331 SCALAR_MAPPER (sinh, ::sinh) |
|
8c32f95c2639
convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
332 CD_SCALAR_MAPPER (sqrt, ::sqrt, std::sqrt, 0.0, octave_Inf) |
|
8c32f95c2639
convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
333 SCALAR_MAPPER (tan, ::tan) |
|
8c32f95c2639
convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
334 SCALAR_MAPPER (tanh, ::tanh) |
|
8c32f95c2639
convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
335 SCALAR_MAPPER (finite, xfinite) |
|
8c32f95c2639
convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
336 SCALAR_MAPPER (isinf, xisinf) |
|
8c32f95c2639
convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
337 SCALAR_MAPPER (isna, octave_is_NA) |
|
8c32f95c2639
convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
338 SCALAR_MAPPER (isnan, xisnan) |
|
8c32f95c2639
convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
339 |
| 2376 | 340 /* |
| 341 ;;; Local Variables: *** | |
| 342 ;;; mode: C++ *** | |
| 343 ;;; End: *** | |
| 344 */ |