Mercurial > octave-nkf
annotate doc/interpreter/arith.txi @ 8783:aee6f5c6665e
include DOCSTRING entries for cummin and cummax
| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Tue, 17 Feb 2009 21:36:34 +0100 |
| parents | 6f2d95255911 |
| children | 8463d1a2e544 |
| rev | line source |
|---|---|
| 7018 | 1 @c Copyright (C) 1996, 1997, 1999, 2000, 2001, 2002, 2007 John W. Eaton |
| 2 @c | |
| 3 @c This file is part of Octave. | |
| 4 @c | |
| 5 @c Octave is free software; you can redistribute it and/or modify it | |
| 6 @c under the terms of the GNU General Public License as published by the | |
| 7 @c Free Software Foundation; either version 3 of the License, or (at | |
| 8 @c your option) any later version. | |
| 9 @c | |
| 10 @c Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 11 @c ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 12 @c FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 13 @c for more details. | |
| 14 @c | |
| 15 @c You should have received a copy of the GNU General Public License | |
| 16 @c along with Octave; see the file COPYING. If not, see | |
| 17 @c <http://www.gnu.org/licenses/>. | |
| 3294 | 18 |
| 4167 | 19 @node Arithmetic |
| 3294 | 20 @chapter Arithmetic |
| 21 | |
| 22 Unless otherwise noted, all of the functions described in this chapter | |
| 23 will work for real and complex scalar or matrix arguments. | |
| 24 | |
| 25 @menu | |
| 26 * Utility Functions:: | |
| 27 * Complex Arithmetic:: | |
| 28 * Trigonometry:: | |
| 29 * Sums and Products:: | |
| 30 * Special Functions:: | |
| 3803 | 31 * Coordinate Transformations:: |
| 3294 | 32 * Mathematical Constants:: |
| 33 @end menu | |
| 34 | |
| 4169 | 35 @node Utility Functions |
| 3294 | 36 @section Utility Functions |
| 37 | |
| 38 The following functions are available for working with complex numbers. | |
| 39 Each expects a single argument. They are called @dfn{mapping functions} | |
| 40 because when given a matrix argument, they apply the given function to | |
| 41 each element of the matrix. | |
| 42 | |
| 3321 | 43 @DOCSTRING(ceil) |
| 3294 | 44 |
| 6550 | 45 @DOCSTRING(cplxpair) |
| 46 | |
| 6788 | 47 @DOCSTRING(del2) |
| 48 | |
| 3321 | 49 @DOCSTRING(exp) |
| 3294 | 50 |
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51 @DOCSTRING(expm1) |
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52 |
| 6550 | 53 @DOCSTRING(factor) |
| 54 | |
| 55 @DOCSTRING(factorial) | |
| 56 | |
| 3321 | 57 @DOCSTRING(fix) |
| 3294 | 58 |
| 3321 | 59 @DOCSTRING(floor) |
| 3294 | 60 |
| 6550 | 61 @DOCSTRING(fmod) |
| 62 | |
| 3321 | 63 @DOCSTRING(gcd) |
| 3294 | 64 |
| 6551 | 65 @DOCSTRING(gradient) |
| 66 | |
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67 @DOCSTRING(hypot) |
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68 |
| 3321 | 69 @DOCSTRING(lcm) |
| 3294 | 70 |
| 3321 | 71 @DOCSTRING(log) |
| 3294 | 72 |
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73 @DOCSTRING(log1p) |
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74 |
| 3321 | 75 @DOCSTRING(log10) |
| 3294 | 76 |
| 3321 | 77 @DOCSTRING(log2) |
| 3294 | 78 |
| 3321 | 79 @DOCSTRING(max) |
| 3294 | 80 |
| 3321 | 81 @DOCSTRING(min) |
| 82 | |
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83 @DOCSTRING(cummax) |
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84 |
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85 @DOCSTRING(cummin) |
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86 |
| 3982 | 87 @DOCSTRING(mod) |
| 88 | |
| 3321 | 89 @DOCSTRING(nextpow2) |
| 3294 | 90 |
| 6550 | 91 @DOCSTRING(nthroot) |
| 92 | |
| 3321 | 93 @DOCSTRING(pow2) |
| 3294 | 94 |
| 6550 | 95 @DOCSTRING(primes) |
| 96 | |
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97 @DOCSTRING(reallog) |
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98 |
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99 @DOCSTRING(realpow) |
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100 |
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101 @DOCSTRING(realsqrt) |
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102 |
| 3321 | 103 @DOCSTRING(rem) |
| 3294 | 104 |
| 3321 | 105 @DOCSTRING(round) |
| 3294 | 106 |
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107 @DOCSTRING(roundb) |
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parents:
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changeset
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108 |
| 3321 | 109 @DOCSTRING(sign) |
| 3294 | 110 |
| 3321 | 111 @DOCSTRING(sqrt) |
| 3294 | 112 |
| 4169 | 113 @node Complex Arithmetic |
| 3294 | 114 @section Complex Arithmetic |
| 115 | |
| 116 The following functions are available for working with complex | |
| 117 numbers. Each expects a single argument. Given a matrix they work on | |
| 118 an element by element basis. In the descriptions of the following | |
| 119 functions, | |
| 120 @iftex | |
| 121 @tex | |
| 122 $z$ is the complex number $x + iy$, where $i$ is defined as | |
| 123 $\sqrt{-1}$. | |
| 124 @end tex | |
| 125 @end iftex | |
| 126 @ifinfo | |
| 127 @var{z} is the complex number @var{x} + @var{i}@var{y}, where @var{i} is | |
| 128 defined as @code{sqrt (-1)}. | |
| 129 @end ifinfo | |
| 130 | |
| 3321 | 131 @DOCSTRING(abs) |
| 3294 | 132 |
| 3321 | 133 @DOCSTRING(arg) |
| 3294 | 134 |
| 3321 | 135 @DOCSTRING(conj) |
| 3294 | 136 |
| 3321 | 137 @DOCSTRING(imag) |
| 3294 | 138 |
| 3321 | 139 @DOCSTRING(real) |
| 3294 | 140 |
| 4169 | 141 @node Trigonometry |
| 3294 | 142 @section Trigonometry |
| 143 | |
| 144 Octave provides the following trigonometric functions. Angles are | |
| 6939 | 145 specified in radians. To convert from degrees to radians multiply by |
| 3294 | 146 @iftex |
| 147 @tex | |
| 148 $\pi/180$ | |
| 149 @end tex | |
| 150 @end iftex | |
| 151 @ifinfo | |
| 152 @code{pi/180} | |
| 153 @end ifinfo | |
| 154 (e.g. @code{sin (30 * pi/180)} returns the sine of 30 degrees). | |
| 155 | |
| 3321 | 156 @DOCSTRING(sin) |
| 157 @DOCSTRING(cos) | |
| 158 @DOCSTRING(tan) | |
| 159 @DOCSTRING(sec) | |
| 160 @DOCSTRING(csc) | |
| 161 @DOCSTRING(cot) | |
| 3294 | 162 |
| 3321 | 163 @DOCSTRING(asin) |
| 164 @DOCSTRING(acos) | |
| 165 @DOCSTRING(atan) | |
| 166 @DOCSTRING(asec) | |
| 167 @DOCSTRING(acsc) | |
| 168 @DOCSTRING(acot) | |
| 3294 | 169 |
| 3321 | 170 @DOCSTRING(sinh) |
| 171 @DOCSTRING(cosh) | |
| 172 @DOCSTRING(tanh) | |
| 173 @DOCSTRING(sech) | |
| 3428 | 174 @DOCSTRING(csch) |
| 3321 | 175 @DOCSTRING(coth) |
| 3294 | 176 |
| 3321 | 177 @DOCSTRING(asinh) |
| 178 @DOCSTRING(acosh) | |
| 179 @DOCSTRING(atanh) | |
| 180 @DOCSTRING(asech) | |
| 181 @DOCSTRING(acsch) | |
| 182 @DOCSTRING(acoth) | |
| 3294 | 183 |
| 7001 | 184 Each of these functions expects a single argument. For matrix arguments, |
| 3294 | 185 they work on an element by element basis. For example, |
| 186 | |
| 187 @example | |
| 188 @group | |
| 189 sin ([1, 2; 3, 4]) | |
| 190 @result{} 0.84147 0.90930 | |
| 191 0.14112 -0.75680 | |
| 192 @end group | |
| 193 @end example | |
| 194 | |
| 3321 | 195 @DOCSTRING(atan2) |
| 196 | |
| 6502 | 197 In addition to the trigonometric functions that work with radians, |
| 198 Octave also provides the following functions which work with degrees. | |
| 199 | |
| 200 @DOCSTRING(sind) | |
| 201 @DOCSTRING(cosd) | |
| 202 @DOCSTRING(tand) | |
| 203 @DOCSTRING(secd) | |
| 204 @DOCSTRING(cscd) | |
| 205 @DOCSTRING(cotd) | |
| 206 | |
| 207 @DOCSTRING(asind) | |
| 208 @DOCSTRING(acosd) | |
| 209 @DOCSTRING(atand) | |
| 210 @DOCSTRING(asecd) | |
| 211 @DOCSTRING(acscd) | |
| 212 @DOCSTRING(acotd) | |
| 3294 | 213 |
| 4169 | 214 @node Sums and Products |
| 3294 | 215 @section Sums and Products |
| 216 | |
| 3321 | 217 @DOCSTRING(sum) |
| 3294 | 218 |
| 3321 | 219 @DOCSTRING(prod) |
| 3294 | 220 |
| 3321 | 221 @DOCSTRING(cumsum) |
| 3294 | 222 |
| 3321 | 223 @DOCSTRING(cumprod) |
| 3294 | 224 |
| 3321 | 225 @DOCSTRING(sumsq) |
| 3294 | 226 |
| 6770 | 227 @DOCSTRING(accumarray) |
| 228 | |
| 4169 | 229 @node Special Functions |
| 3294 | 230 @section Special Functions |
| 231 | |
| 3459 | 232 @DOCSTRING(besselj) |
| 233 | |
| 234 @DOCSTRING(airy) | |
| 3294 | 235 |
| 3321 | 236 @DOCSTRING(beta) |
| 3294 | 237 |
| 3444 | 238 @DOCSTRING(betainc) |
| 3294 | 239 |
| 6502 | 240 @DOCSTRING(betaln) |
| 241 | |
| 3321 | 242 @DOCSTRING(bincoeff) |
| 3294 | 243 |
| 3321 | 244 @DOCSTRING(erf) |
| 3294 | 245 |
| 3321 | 246 @DOCSTRING(erfc) |
| 3294 | 247 |
| 3321 | 248 @DOCSTRING(erfinv) |
| 3294 | 249 |
| 3321 | 250 @DOCSTRING(gamma) |
| 3294 | 251 |
| 3444 | 252 @DOCSTRING(gammainc) |
| 3294 | 253 |
| 6502 | 254 @DOCSTRING(legendre) |
| 255 | |
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256 @anchor{doc-gammaln} |
| 3321 | 257 @DOCSTRING(lgamma) |
| 258 | |
| 259 @DOCSTRING(cross) | |
| 3294 | 260 |
| 3321 | 261 @DOCSTRING(commutation_matrix) |
| 3294 | 262 |
| 3321 | 263 @DOCSTRING(duplication_matrix) |
| 3294 | 264 |
| 4169 | 265 @node Coordinate Transformations |
| 3803 | 266 @section Coordinate Transformations |
| 267 | |
| 268 @DOCSTRING(cart2pol) | |
| 269 | |
| 270 @DOCSTRING(pol2cart) | |
| 271 | |
| 272 @DOCSTRING(cart2sph) | |
| 273 | |
| 274 @DOCSTRING(sph2cart) | |
| 275 | |
| 4169 | 276 @node Mathematical Constants |
| 3294 | 277 @section Mathematical Constants |
| 278 | |
| 3321 | 279 @DOCSTRING(I) |
| 280 | |
| 281 @DOCSTRING(Inf) | |
| 3294 | 282 |
| 3321 | 283 @DOCSTRING(NaN) |
| 3294 | 284 |
| 3321 | 285 @DOCSTRING(pi) |
| 3294 | 286 |
| 3321 | 287 @DOCSTRING(e) |
| 288 | |
| 289 @DOCSTRING(eps) | |
| 3294 | 290 |
| 3321 | 291 @DOCSTRING(realmax) |
| 3294 | 292 |
| 3321 | 293 @DOCSTRING(realmin) |