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 option to highlight selections using faces.
  78
  79 * Gave `calc-histogram' the option of using a vector to determine the bins.
  80
  81 * Added "O" option prefix.
  82
  83 * Used "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
  84
  85 Emacs 23.2
  86
  87 * Added twos-complement display.
  88
  89 Emacs 23.1:
  90
  91 * Gave `j *' (cal-sel-mult-both-sides) an option to expand the
  92   denominator.
  93
  94 * Use `calc-embedded-word-regexp' for finding words in
  95   `calc-embedded-word' in place of delimiters.
  96
  97 * Remove version numbering; use Emacs version for reference.
  98
  99 * Added support for using registers.
 100
 101 * Added support for Yacas, Maxima and Giac languages.
 102
 103 * Added a menu.
 104
 105 * Added logistic non-linear curves to curve-fitting.
 106
 107 * Added option of plotting data points and curve when curve-fitting.
 108
 109 * Made unit conversions exact when possible.
 110
 111 * Lowered the precedence of negation.
 112
 113 Version 2.1:
 114
 115 * New matrix mode for square matrices.  Improved handling of
 116   non-commutative products.
 117
 118 * New functions: powerexpand and ldiv.
 119
 120 * Added new functions: sec, csc, cot, sech, csch, coth.
 121
 122 * 0^0 now evaluates to 1.
 123
 124 * Added a new language mode for LaTeX.
 125
 126 * Calc now tries to use an appropriate language mode in embedded mode.
 127
 128 * Calc now restores original modes when leaving embedded mode.
 129
 130 * User settable variables which are not set with keystrokes are now
 131   customizable.
 132
 133 * Made ~/.calc.el the default Calc settings file.
 134
 135 * Miscellaneous updates and bugfixes.
 136
 137 \f
 138 Version 2.02f:
 139
 140  * Fixed a bug which broke `I', `H', `K' prefix keys in recent Emacs.
 141
 142  * Fixed a bug in calc.texinfo which prevented "make tex2" from working.
 143
 144  * Updated `C-y' (calc-yank) to understand Emacs 19 generalized kill ring.
 145
 146  * Added a copy of "calccard.tex", the Calc quick reference card.
 147
 148 \f
 149 Version 2.02e:
 150
 151  * Fixed an installation bug caused by recent changes to `write-region'.
 152
 153 \f
 154 Version 2.02d:
 155
 156  * Fixed a minor installation problem with a Emacs 19.29 byte-compiler bug.
 157
 158  * Removed archaic "macedit" package (superseded by "edmacro").
 159
 160 \f
 161 Version 2.02c:
 162
 163  * Patch to port Calc to Lucid Emacs 19; still works with GNU 18 and GNU 19.
 164
 165  * Fixed a bug that broke `C-x C-c' after Calc graphics had been used.
 166
 167 \f
 168 Version 2.02b:
 169
 170  * Minor patch to port Calc to GNU Emacs 19.  Will be superseded by Calc 3.00.
 171
 172 \f
 173 Version 2.02:
 174
 175  * Revamped the manual a bit; rearranged some sections.
 176
 177  * Added marginal notes for Key/Function Index refs in printed manual.
 178
 179  * Changed `M-# r' to deal more gracefully with blank lines.
 180
 181  * Made reductions like `V R +' and `M-# :' considerably faster.
 182
 183  * Improved parsing and display of cases like "[a + b]".
 184
 185  * Added `t +' and `t -' for doing business date arithmetic.
 186
 187  * Added "syntax tables," the opposite of compositions.
 188
 189  * Added another Rewrites Tutorial exercise.
 190
 191  * Added the "vmatches" function.
 192
 193  * Added the `Modes' variable and `m g' command.
 194
 195  * Improved `u s' to cancel, e.g., "11 mph hr / yd" to get a number.
 196
 197  * Added "quick units" commands "u 0" through "u 9".
 198
 199  * Moved `M-%' to calc.el to avoid autoloading problems.
 200
 201  * Added `M-=' during algebraic entry, acts like `RET ='.
 202
 203  * Made `LFD' prevent evaluation when finishing a calc-edit command.
 204
 205  * Changed calc-store commands to use `t .' mode for trail display.
 206
 207  * Improved integrator to understand forms involving "erf".
 208
 209  * Fixed parser to make sense of "[1....1e2]" input.
 210
 211  * Fixed FORTRAN parser to treat a(i,j) as a_i_j if a is declared matrix.
 212
 213  * Got rid of some version number stamps to reduce size of patches.
 214
 215  * Fixed a bug in defmath treating "<=" and ">=" predicates.
 216
 217  * Fixed a bug in which Calc crashed multiplying two date forms.
 218
 219  * Fixed a bug in line breaker that crashed for large, nested formulas.
 220
 221  * Fixed a bug using ` to edit string("foo").
 222
 223  * Fixed a bug where `M-# y' in Big mode copied stack level number.
 224
 225  * Fixed a bug where `g O' used wrong default directory, no completion.
 226
 227  * Fixed a bug where "foo_bar(i)" parsed in C mode but showed as foo#bar.
 228
 229  * Fixed several bugs where large calculations got "computation too long."
 230
 231 \f
 232 Version 2.01:
 233
 234  * Added percentage commands `M-%', `b %', and `c %'.
 235
 236  * Changed Big mode to force radix-10 in superscripts.
 237
 238  * Improved display of fractions in various language modes.
 239
 240  * Changed `a n' to work properly with equations and inequalities.
 241
 242  * The problem with cross references to Index nodes in TeX has been fixed.
 243
 244  * Fixed a bug where recursive esc-maps make calc-ext/-aent unloadable.
 245
 246  * Fixed a bug in `M-# k', then `OFF' right away, with fresh Emacs.
 247
 248  * Fixed a bug in which "S_i_j" was formatted wrong after `j s'.
 249
 250  * Fixed a bug in which `h k u c' positioned cursor on wrong line.
 251
 252  * Fixed a bug where `z ?' crashed if `z %' was defined.
 253
 254  * Fixed a bug in `j O' (calc-select-once-maybe).
 255
 256  * Fixed "make private" not to ask "Delete excess versions" and crash.
 257
 258 \f
 259 Version 2.00:
 260
 261  * First complete posting of Calc since 1.01.
 262
 263  * Most parts of Calc have seen changes since version 1.07.  See
 264    section "New for Calc 2.00" in the manual for a summary.  In
 265    the FTP version of the Calc distribution, the file README.prev
 266    contains a detailed change history from 1.00 up to 2.00.
 267
 268 \f
 269 This file is part of GNU Emacs.
 270
 271 GNU Emacs is free software: you can redistribute it and/or modify
 272 it under the terms of the GNU General Public License as published by
 273 the Free Software Foundation, either version 3 of the License, or
 274 (at your option) any later version.
 275
 276 GNU Emacs is distributed in the hope that it will be useful,
 277 but WITHOUT ANY WARRANTY; without even the implied warranty of
 278 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 279 GNU General Public License for more details.
 280
 281 You should have received a copy of the GNU General Public License
 282 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.