lisp/calc/README

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 134  * Removed archaic "macedit" package (superseded by "edmacro").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  Will be superseded by Calc 3.00.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