code.delx.au - gnu-emacs/blob - lisp/calc/README

   1 Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
   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  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 23.1:
  76
  77 * Gave `j *' (cal-sel-mult-both-sides) an option to expand the
  78   denominator.
  79
  80 * Use `calc-embedded-word-regexp' for finding words in
  81   `calc-embedded-word' in place of delimiters.
  82
  83 * Remove version numbering; use Emacs version for reference.
  84
  85 * Added support for using registers.
  86
  87 * Added support for Yacas, Maxima and Giac languages.
  88
  89 * Added a menu.
  90
  91 * Added logistic non-linear curves to curve-fitting.
  92
  93 * Added option of plotting data points and curve when curve-fitting.
  94
  95 * Made unit conversions exact when possible.
  96
  97 * Lowered the precedence of negation.
  98
  99 Version 2.1:
 100
 101 * New matrix mode for square matrices.  Improved handling of
 102   non-commutative products.
 103
 104 * New functions: powerexpand and ldiv.
 105
 106 * Added new functions: sec, csc, cot, sech, csch, coth.
 107
 108 * 0^0 now evaluates to 1.
 109
 110 * Added a new language mode for LaTeX.
 111
 112 * Calc now tries to use an appropriate language mode in embedded mode.
 113
 114 * Calc now restores original modes when leaving embedded mode.
 115
 116 * User settable variables which are not set with keystrokes are now
 117   customizable.
 118
 119 * Made ~/.calc.el the default Calc settings file.
 120
 121 * Miscellaneous updates and bugfixes.
 122
 123 \f
 124 Version 2.02f:
 125
 126  * Fixed a bug which broke `I', `H', `K' prefix keys in recent Emacs.
 127
 128  * Fixed a bug in calc.texinfo which prevented "make tex2" from working.
 129
 130  * Updated `C-y' (calc-yank) to understand Emacs 19 generalized kill ring.
 131
 132  * Added a copy of "calccard.tex", the Calc quick reference card.
 133
 134 \f
 135 Version 2.02e:
 136
 137  * Fixed an installation bug caused by recent changes to `write-region'.
 138
 139 \f
 140 Version 2.02d:
 141
 142  * Fixed a minor installation problem with a Emacs 19.29 byte-compiler bug.
 143
 144  * Removed archaic "macedit" package (superseded by "edmacro").
 145
 146 \f
 147 Version 2.02c:
 148
 149  * Patch to port Calc to Lucid Emacs 19; still works with GNU 18 and GNU 19.
 150
 151  * Fixed a bug that broke `C-x C-c' after Calc graphics had been used.
 152
 153 \f
 154 Version 2.02b:
 155
 156  * Minor patch to port Calc to GNU Emacs 19.  Will be superseded by Calc 3.00.
 157
 158 \f
 159 Version 2.02:
 160
 161  * Revamped the manual a bit; rearranged some sections.
 162
 163  * Added marginal notes for Key/Function Index refs in printed manual.
 164
 165  * Changed `M-# r' to deal more gracefully with blank lines.
 166
 167  * Made reductions like `V R +' and `M-# :' considerably faster.
 168
 169  * Improved parsing and display of cases like "[a + b]".
 170
 171  * Added `t +' and `t -' for doing business date arithmetic.
 172
 173  * Added "syntax tables," the opposite of compositions.
 174
 175  * Added another Rewrites Tutorial exercise.
 176
 177  * Added the "vmatches" function.
 178
 179  * Added the `Modes' variable and `m g' command.
 180
 181  * Improved `u s' to cancel, e.g., "11 mph hr / yd" to get a number.
 182
 183  * Added "quick units" commands "u 0" through "u 9".
 184
 185  * Moved `M-%' to calc.el to avoid autoloading problems.
 186
 187  * Added `M-=' during algebraic entry, acts like `RET ='.
 188
 189  * Made `LFD' prevent evaluation when finishing a calc-edit command.
 190
 191  * Changed calc-store commands to use `t .' mode for trail display.
 192
 193  * Improved integrator to understand forms involving "erf".
 194
 195  * Fixed parser to make sense of "[1....1e2]" input.
 196
 197  * Fixed FORTRAN parser to treat a(i,j) as a_i_j if a is declared matrix.
 198
 199  * Got rid of some version number stamps to reduce size of patches.
 200
 201  * Fixed a bug in defmath treating "<=" and ">=" predicates.
 202
 203  * Fixed a bug in which Calc crashed multiplying two date forms.
 204
 205  * Fixed a bug in line breaker that crashed for large, nested formulas.
 206
 207  * Fixed a bug using ` to edit string("foo").
 208
 209  * Fixed a bug where `M-# y' in Big mode copied stack level number.
 210
 211  * Fixed a bug where `g O' used wrong default directory, no completion.
 212
 213  * Fixed a bug where "foo_bar(i)" parsed in C mode but showed as foo#bar.
 214
 215  * Fixed several bugs where large calculations got "computation too long."
 216
 217 \f
 218 Version 2.01:
 219
 220  * Added percentage commands `M-%', `b %', and `c %'.
 221
 222  * Changed Big mode to force radix-10 in superscripts.
 223
 224  * Improved display of fractions in various language modes.
 225
 226  * Changed `a n' to work properly with equations and inequalities.
 227
 228  * The problem with cross references to Index nodes in TeX has been fixed.
 229
 230  * Fixed a bug where recursive esc-maps make calc-ext/-aent unloadable.
 231
 232  * Fixed a bug in `M-# k', then `OFF' right away, with fresh Emacs.
 233
 234  * Fixed a bug in which "S_i_j" was formatted wrong after `j s'.
 235
 236  * Fixed a bug in which `h k u c' positioned cursor on wrong line.
 237
 238  * Fixed a bug where `z ?' crashed if `z %' was defined.
 239
 240  * Fixed a bug in `j O' (calc-select-once-maybe).
 241
 242  * Fixed "make private" not to ask "Delete excess versions" and crash.
 243
 244 \f
 245 Version 2.00:
 246
 247  * First complete posting of Calc since 1.01.
 248
 249  * Most parts of Calc have seen changes since version 1.07.  See
 250    section "New for Calc 2.00" in the manual for a summary.  In
 251    the FTP version of the Calc distribution, the file README.prev
 252    contains a detailed change history from 1.00 up to 2.00.
 253
 254 \f
 255 This file is part of GNU Emacs.
 256
 257 GNU Emacs is free software: you can redistribute it and/or modify
 258 it under the terms of the GNU General Public License as published by
 259 the Free Software Foundation, either version 3 of the License, or
 260 (at your option) any later version.
 261
 262 GNU Emacs is distributed in the hope that it will be useful,
 263 but WITHOUT ANY WARRANTY; without even the implied warranty of
 264 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 265 GNU General Public License for more details.
 266
 267 You should have received a copy of the GNU General Public License
 268 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.