lisp/calc/README

   1 Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
   2   Free Software Foundation, Inc.
   3 See the end of the file for license conditions.
   4
   5
   6 This directory contains Calc, an advanced desk calculator for GNU
   7 Emacs.
   8
   9 "Calc"  Copyright (C) 1990, 1991, 1992, 1993, 2001, 2002, 2003, 2004,
  10    2005, 2006, 2007, 2008, 2009, 2010  Free Software Foundation, Inc.
  11
  12 Written by:
  13         Dave Gillespie
  14         c/o Synaptics, Inc.
  15         2698 Orchard Parkway
  16         San Jose CA 95134
  17         daveg@synaptics.com, uunet!synaptx!daveg
  18
  19 Currently maintained by:
  20      Jay Belanger <jay.p.belanger@gmail.com>
  21
  22 From the introduction to the manual:
  23
  24   "Calc" is an advanced calculator and mathematical tool that runs as
  25   part of the GNU Emacs environment.  Very roughly based on the HP-28/48
  26   series of calculators, its many features include:
  27
  28     * Choice of algebraic or RPN (stack-based) entry of calculations.
  29
  30     * Arbitrary precision integers and floating-point numbers.
  31
  32     * Arithmetic on rational numbers, complex numbers (rectangular and
  33       polar), error forms with standard deviations, open and closed
  34       intervals, vectors and matrices, dates and times, infinities,
  35       sets, quantities with units, and algebraic formulas.
  36
  37     * Mathematical operations such as logarithms and trigonometric functions.
  38
  39     * Programmer's features (bitwise operations, non-decimal numbers).
  40
  41     * Financial functions such as future value and internal rate of return.
  42
  43     * Number theoretical features such as prime factorization and
  44       arithmetic modulo M for any M.
  45
  46     * Algebraic manipulation features, including symbolic calculus.
  47
  48     * Moving data to and from regular editing buffers.
  49
  50     * "Embedded mode" for manipulating Calc formulas and data directly
  51       inside any editing buffer.
  52
  53     * Graphics using GNUPLOT, a versatile (and free) plotting program.
  54
  55     * Easy programming using keyboard macros, algebraic formulas,
  56       algebraic rewrite rules, or extended Emacs Lisp.
  57
  58
  59 Calc is written entirely in Emacs Lisp, for maximum portability.
  60
  61 I am anxious to hear about your experiences using Calc.  Send mail to
  62 "jay.p.belanger@gmail.com".  A bug report is most useful if you include the
  63 exact input and output that occurred, any modes in effect (such as the
  64 current precision), and so on.  If you find Calc is difficult to operate
  65 in any way, or if you have other suggestions, don't hesitate to let me
  66 know.  If you find errors (including simple typos) in the manual, let
  67 me know.  Even if you find no bugs at all I would love to hear your
  68 opinions.
  69
  70
  71
  72 Summary of changes to "Calc"
  73 ------- -- ------- --  ----
  74
  75 Emacs 24.1
  76
  77 * Added "O" option prefix.
  78
  79 * Used "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
  80
  81 Emacs 23.2
  82
  83 * Added twos-complement display.
  84
  85 Emacs 23.1:
  86
  87 * Gave `j *' (cal-sel-mult-both-sides) an option to expand the
  88   denominator.
  89
  90 * Use `calc-embedded-word-regexp' for finding words in
  91   `calc-embedded-word' in place of delimiters.
  92
  93 * Remove version numbering; use Emacs version for reference.
  94
  95 * Added support for using registers.
  96
  97 * Added support for Yacas, Maxima and Giac languages.
  98
  99 * Added a menu.
 100
 101 * Added logistic non-linear curves to curve-fitting.
 102
 103 * Added option of plotting data points and curve when curve-fitting.
 104
 105 * Made unit conversions exact when possible.
 106
 107 * Lowered the precedence of negation.
 108
 109 Version 2.1:
 110
 111 * New matrix mode for square matrices.  Improved handling of
 112   non-commutative products.
 113
 114 * New functions: powerexpand and ldiv.
 115
 116 * Added new functions: sec, csc, cot, sech, csch, coth.
 117
 118 * 0^0 now evaluates to 1.
 119
 120 * Added a new language mode for LaTeX.
 121
 122 * Calc now tries to use an appropriate language mode in embedded mode.
 123
 124 * Calc now restores original modes when leaving embedded mode.
 125
 126 * User settable variables which are not set with keystrokes are now
 127   customizable.
 128
 129 * Made ~/.calc.el the default Calc settings file.
 130
 131 * Miscellaneous updates and bugfixes.
 132
 133 \f
 134 Version 2.02f:
 135
 136  * Fixed a bug which broke `I', `H', `K' prefix keys in recent Emacs.
 137
 138  * Fixed a bug in calc.texinfo which prevented "make tex2" from working.
 139
 140  * Updated `C-y' (calc-yank) to understand Emacs 19 generalized kill ring.
 141
 142  * Added a copy of "calccard.tex", the Calc quick reference card.
 143
 144 \f
 145 Version 2.02e:
 146
 147  * Fixed an installation bug caused by recent changes to `write-region'.
 148
 149 \f
 150 Version 2.02d:
 151
 152  * Fixed a minor installation problem with a Emacs 19.29 byte-compiler bug.
 153
 154  * Removed archaic "macedit" package (superseded by "edmacro").
 155
 156 \f
 157 Version 2.02c:
 158
 159  * Patch to port Calc to Lucid Emacs 19; still works with GNU 18 and GNU 19.
 160
 161  * Fixed a bug that broke `C-x C-c' after Calc graphics had been used.
 162
 163 \f
 164 Version 2.02b:
 165
 166  * Minor patch to port Calc to GNU Emacs 19.  Will be superseded by Calc 3.00.
 167
 168 \f
 169 Version 2.02:
 170
 171  * Revamped the manual a bit; rearranged some sections.
 172
 173  * Added marginal notes for Key/Function Index refs in printed manual.
 174
 175  * Changed `M-# r' to deal more gracefully with blank lines.
 176
 177  * Made reductions like `V R +' and `M-# :' considerably faster.
 178
 179  * Improved parsing and display of cases like "[a + b]".
 180
 181  * Added `t +' and `t -' for doing business date arithmetic.
 182
 183  * Added "syntax tables," the opposite of compositions.
 184
 185  * Added another Rewrites Tutorial exercise.
 186
 187  * Added the "vmatches" function.
 188
 189  * Added the `Modes' variable and `m g' command.
 190
 191  * Improved `u s' to cancel, e.g., "11 mph hr / yd" to get a number.
 192
 193  * Added "quick units" commands "u 0" through "u 9".
 194
 195  * Moved `M-%' to calc.el to avoid autoloading problems.
 196
 197  * Added `M-=' during algebraic entry, acts like `RET ='.
 198
 199  * Made `LFD' prevent evaluation when finishing a calc-edit command.
 200
 201  * Changed calc-store commands to use `t .' mode for trail display.
 202
 203  * Improved integrator to understand forms involving "erf".
 204
 205  * Fixed parser to make sense of "[1....1e2]" input.
 206
 207  * Fixed FORTRAN parser to treat a(i,j) as a_i_j if a is declared matrix.
 208
 209  * Got rid of some version number stamps to reduce size of patches.
 210
 211  * Fixed a bug in defmath treating "<=" and ">=" predicates.
 212
 213  * Fixed a bug in which Calc crashed multiplying two date forms.
 214
 215  * Fixed a bug in line breaker that crashed for large, nested formulas.
 216
 217  * Fixed a bug using ` to edit string("foo").
 218
 219  * Fixed a bug where `M-# y' in Big mode copied stack level number.
 220
 221  * Fixed a bug where `g O' used wrong default directory, no completion.
 222
 223  * Fixed a bug where "foo_bar(i)" parsed in C mode but showed as foo#bar.
 224
 225  * Fixed several bugs where large calculations got "computation too long."
 226
 227 \f
 228 Version 2.01:
 229
 230  * Added percentage commands `M-%', `b %', and `c %'.
 231
 232  * Changed Big mode to force radix-10 in superscripts.
 233
 234  * Improved display of fractions in various language modes.
 235
 236  * Changed `a n' to work properly with equations and inequalities.
 237
 238  * The problem with cross references to Index nodes in TeX has been fixed.
 239
 240  * Fixed a bug where recursive esc-maps make calc-ext/-aent unloadable.
 241
 242  * Fixed a bug in `M-# k', then `OFF' right away, with fresh Emacs.
 243
 244  * Fixed a bug in which "S_i_j" was formatted wrong after `j s'.
 245
 246  * Fixed a bug in which `h k u c' positioned cursor on wrong line.
 247
 248  * Fixed a bug where `z ?' crashed if `z %' was defined.
 249
 250  * Fixed a bug in `j O' (calc-select-once-maybe).
 251
 252  * Fixed "make private" not to ask "Delete excess versions" and crash.
 253
 254 \f
 255 Version 2.00:
 256
 257  * First complete posting of Calc since 1.01.
 258
 259  * Most parts of Calc have seen changes since version 1.07.  See
 260    section "New for Calc 2.00" in the manual for a summary.  In
 261    the FTP version of the Calc distribution, the file README.prev
 262    contains a detailed change history from 1.00 up to 2.00.
 263
 264 \f
 265 This file is part of GNU Emacs.
 266
 267 GNU Emacs is free software: you can redistribute it and/or modify
 268 it under the terms of the GNU General Public License as published by
 269 the Free Software Foundation, either version 3 of the License, or
 270 (at your option) any later version.
 271
 272 GNU Emacs is distributed in the hope that it will be useful,
 273 but WITHOUT ANY WARRANTY; without even the implied warranty of
 274 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 275 GNU General Public License for more details.
 276
 277 You should have received a copy of the GNU General Public License
 278 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.