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 23.2
  76
  77 * Added twos-complement display.
  78
  79 Emacs 23.1:
  80
  81 * Gave `j *' (cal-sel-mult-both-sides) an option to expand the
  82   denominator.
  83
  84 * Use `calc-embedded-word-regexp' for finding words in
  85   `calc-embedded-word' in place of delimiters.
  86
  87 * Remove version numbering; use Emacs version for reference.
  88
  89 * Added support for using registers.
  90
  91 * Added support for Yacas, Maxima and Giac languages.
  92
  93 * Added a menu.
  94
  95 * Added logistic non-linear curves to curve-fitting.
  96
  97 * Added option of plotting data points and curve when curve-fitting.
  98
  99 * Made unit conversions exact when possible.
 100
 101 * Lowered the precedence of negation.
 102
 103 Version 2.1:
 104
 105 * New matrix mode for square matrices.  Improved handling of
 106   non-commutative products.
 107
 108 * New functions: powerexpand and ldiv.
 109
 110 * Added new functions: sec, csc, cot, sech, csch, coth.
 111
 112 * 0^0 now evaluates to 1.
 113
 114 * Added a new language mode for LaTeX.
 115
 116 * Calc now tries to use an appropriate language mode in embedded mode.
 117
 118 * Calc now restores original modes when leaving embedded mode.
 119
 120 * User settable variables which are not set with keystrokes are now
 121   customizable.
 122
 123 * Made ~/.calc.el the default Calc settings file.
 124
 125 * Miscellaneous updates and bugfixes.
 126
 127 \f
 128 Version 2.02f:
 129
 130  * Fixed a bug which broke `I', `H', `K' prefix keys in recent Emacs.
 131
 132  * Fixed a bug in calc.texinfo which prevented "make tex2" from working.
 133
 134  * Updated `C-y' (calc-yank) to understand Emacs 19 generalized kill ring.
 135
 136  * Added a copy of "calccard.tex", the Calc quick reference card.
 137
 138 \f
 139 Version 2.02e:
 140
 141  * Fixed an installation bug caused by recent changes to `write-region'.
 142
 143 \f
 144 Version 2.02d:
 145
 146  * Fixed a minor installation problem with a Emacs 19.29 byte-compiler bug.
 147
 148  * Removed archaic "macedit" package (superseded by "edmacro").
 149
 150 \f
 151 Version 2.02c:
 152
 153  * Patch to port Calc to Lucid Emacs 19; still works with GNU 18 and GNU 19.
 154
 155  * Fixed a bug that broke `C-x C-c' after Calc graphics had been used.
 156
 157 \f
 158 Version 2.02b:
 159
 160  * Minor patch to port Calc to GNU Emacs 19.  Will be superseded by Calc 3.00.
 161
 162 \f
 163 Version 2.02:
 164
 165  * Revamped the manual a bit; rearranged some sections.
 166
 167  * Added marginal notes for Key/Function Index refs in printed manual.
 168
 169  * Changed `M-# r' to deal more gracefully with blank lines.
 170
 171  * Made reductions like `V R +' and `M-# :' considerably faster.
 172
 173  * Improved parsing and display of cases like "[a + b]".
 174
 175  * Added `t +' and `t -' for doing business date arithmetic.
 176
 177  * Added "syntax tables," the opposite of compositions.
 178
 179  * Added another Rewrites Tutorial exercise.
 180
 181  * Added the "vmatches" function.
 182
 183  * Added the `Modes' variable and `m g' command.
 184
 185  * Improved `u s' to cancel, e.g., "11 mph hr / yd" to get a number.
 186
 187  * Added "quick units" commands "u 0" through "u 9".
 188
 189  * Moved `M-%' to calc.el to avoid autoloading problems.
 190
 191  * Added `M-=' during algebraic entry, acts like `RET ='.
 192
 193  * Made `LFD' prevent evaluation when finishing a calc-edit command.
 194
 195  * Changed calc-store commands to use `t .' mode for trail display.
 196
 197  * Improved integrator to understand forms involving "erf".
 198
 199  * Fixed parser to make sense of "[1....1e2]" input.
 200
 201  * Fixed FORTRAN parser to treat a(i,j) as a_i_j if a is declared matrix.
 202
 203  * Got rid of some version number stamps to reduce size of patches.
 204
 205  * Fixed a bug in defmath treating "<=" and ">=" predicates.
 206
 207  * Fixed a bug in which Calc crashed multiplying two date forms.
 208
 209  * Fixed a bug in line breaker that crashed for large, nested formulas.
 210
 211  * Fixed a bug using ` to edit string("foo").
 212
 213  * Fixed a bug where `M-# y' in Big mode copied stack level number.
 214
 215  * Fixed a bug where `g O' used wrong default directory, no completion.
 216
 217  * Fixed a bug where "foo_bar(i)" parsed in C mode but showed as foo#bar.
 218
 219  * Fixed several bugs where large calculations got "computation too long."
 220
 221 \f
 222 Version 2.01:
 223
 224  * Added percentage commands `M-%', `b %', and `c %'.
 225
 226  * Changed Big mode to force radix-10 in superscripts.
 227
 228  * Improved display of fractions in various language modes.
 229
 230  * Changed `a n' to work properly with equations and inequalities.
 231
 232  * The problem with cross references to Index nodes in TeX has been fixed.
 233
 234  * Fixed a bug where recursive esc-maps make calc-ext/-aent unloadable.
 235
 236  * Fixed a bug in `M-# k', then `OFF' right away, with fresh Emacs.
 237
 238  * Fixed a bug in which "S_i_j" was formatted wrong after `j s'.
 239
 240  * Fixed a bug in which `h k u c' positioned cursor on wrong line.
 241
 242  * Fixed a bug where `z ?' crashed if `z %' was defined.
 243
 244  * Fixed a bug in `j O' (calc-select-once-maybe).
 245
 246  * Fixed "make private" not to ask "Delete excess versions" and crash.
 247
 248 \f
 249 Version 2.00:
 250
 251  * First complete posting of Calc since 1.01.
 252
 253  * Most parts of Calc have seen changes since version 1.07.  See
 254    section "New for Calc 2.00" in the manual for a summary.  In
 255    the FTP version of the Calc distribution, the file README.prev
 256    contains a detailed change history from 1.00 up to 2.00.
 257
 258 \f
 259 This file is part of GNU Emacs.
 260
 261 GNU Emacs is free software: you can redistribute it and/or modify
 262 it under the terms of the GNU General Public License as published by
 263 the Free Software Foundation, either version 3 of the License, or
 264 (at your option) any later version.
 265
 266 GNU Emacs is distributed in the hope that it will be useful,
 267 but WITHOUT ANY WARRANTY; without even the implied warranty of
 268 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 269 GNU General Public License for more details.
 270
 271 You should have received a copy of the GNU General Public License
 272 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.