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 141  * Removed archaic "macedit" package (superseded by "edmacro").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  Will be superseded by Calc 3.00.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