lisp/calc/README

   1 Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
   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  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 <belanger@truman.edu>
  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 "belanger@truman.edu".  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
  76 Version 2.1:
  77
  78 * New matrix mode for square matrices.  Improved handling of
  79   non-commutative products.
  80
  81 * New functions: powerexpand and ldiv.
  82
  83 * Added new functions: sec, csc, cot, sech, csch, coth.
  84
  85 * 0^0 now evaluates to 1.
  86
  87 * Added a new language mode for LaTeX.
  88
  89 * Calc now tries to use an appropriate language mode in embedded mode.
  90
  91 * Calc now restores original modes when leaving embedded mode.
  92
  93 * User settable variables which are not set with keystrokes are now
  94   customizable.
  95
  96 * Made ~/.calc.el the default Calc settings file.
  97
  98 * Miscellaneous updates and bugfixes.
  99
 100 \f
 101 Version 2.02f:
 102
 103  * Fixed a bug which broke `I', `H', `K' prefix keys in recent Emacs.
 104
 105  * Fixed a bug in calc.texinfo which prevented "make tex2" from working.
 106
 107  * Updated `C-y' (calc-yank) to understand Emacs 19 generalized kill ring.
 108
 109  * Added a copy of "calccard.tex", the Calc quick reference card.
 110
 111 \f
 112 Version 2.02e:
 113
 114  * Fixed an installation bug caused by recent changes to `write-region'.
 115
 116 \f
 117 Version 2.02d:
 118
 119  * Fixed a minor installation problem with a Emacs 19.29 byte-compiler bug.
 120
 121  * Removed archaic "macedit" package (superseded by "edmacro").
 122
 123 \f
 124 Version 2.02c:
 125
 126  * Patch to port Calc to Lucid Emacs 19; still works with GNU 18 and GNU 19.
 127
 128  * Fixed a bug that broke `C-x C-c' after Calc graphics had been used.
 129
 130 \f
 131 Version 2.02b:
 132
 133  * Minor patch to port Calc to GNU Emacs 19.  Will be superseded by Calc 3.00.
 134
 135 \f
 136 Version 2.02:
 137
 138  * Revamped the manual a bit; rearranged some sections.
 139
 140  * Added marginal notes for Key/Function Index refs in printed manual.
 141
 142  * Changed `M-# r' to deal more gracefully with blank lines.
 143
 144  * Made reductions like `V R +' and `M-# :' considerably faster.
 145
 146  * Improved parsing and display of cases like "[a + b]".
 147
 148  * Added `t +' and `t -' for doing business date arithmetic.
 149
 150  * Added "syntax tables," the opposite of compositions.
 151
 152  * Added another Rewrites Tutorial exercise.
 153
 154  * Added the "vmatches" function.
 155
 156  * Added the `Modes' variable and `m g' command.
 157
 158  * Improved `u s' to cancel, e.g., "11 mph hr / yd" to get a number.
 159
 160  * Added "quick units" commands "u 0" through "u 9".
 161
 162  * Moved `M-%' to calc.el to avoid autoloading problems.
 163
 164  * Added `M-=' during algebraic entry, acts like `RET ='.
 165
 166  * Made `LFD' prevent evaluation when finishing a calc-edit command.
 167
 168  * Changed calc-store commands to use `t .' mode for trail display.
 169
 170  * Improved integrator to understand forms involving "erf".
 171
 172  * Fixed parser to make sense of "[1....1e2]" input.
 173
 174  * Fixed FORTRAN parser to treat a(i,j) as a_i_j if a is declared matrix.
 175
 176  * Got rid of some version number stamps to reduce size of patches.
 177
 178  * Fixed a bug in defmath treating "<=" and ">=" predicates.
 179
 180  * Fixed a bug in which Calc crashed multiplying two date forms.
 181
 182  * Fixed a bug in line breaker that crashed for large, nested formulas.
 183
 184  * Fixed a bug using ` to edit string("foo").
 185
 186  * Fixed a bug where `M-# y' in Big mode copied stack level number.
 187
 188  * Fixed a bug where `g O' used wrong default directory, no completion.
 189
 190  * Fixed a bug where "foo_bar(i)" parsed in C mode but showed as foo#bar.
 191
 192  * Fixed several bugs where large calculations got "computation too long."
 193
 194 \f
 195 Version 2.01:
 196
 197  * Added percentage commands `M-%', `b %', and `c %'.
 198
 199  * Changed Big mode to force radix-10 in superscripts.
 200
 201  * Improved display of fractions in various language modes.
 202
 203  * Changed `a n' to work properly with equations and inequalities.
 204
 205  * The problem with cross references to Index nodes in TeX has been fixed.
 206
 207  * Fixed a bug where recursive esc-maps make calc-ext/-aent unloadable.
 208
 209  * Fixed a bug in `M-# k', then `OFF' right away, with fresh Emacs.
 210
 211  * Fixed a bug in which "S_i_j" was formatted wrong after `j s'.
 212
 213  * Fixed a bug in which `h k u c' positioned cursor on wrong line.
 214
 215  * Fixed a bug where `z ?' crashed if `z %' was defined.
 216
 217  * Fixed a bug in `j O' (calc-select-once-maybe).
 218
 219  * Fixed "make private" not to ask "Delete excess versions" and crash.
 220
 221 \f
 222 Version 2.00:
 223
 224  * First complete posting of Calc since 1.01.
 225
 226  * Most parts of Calc have seen changes since version 1.07.  See
 227    section "New for Calc 2.00" in the manual for a summary.  In
 228    the FTP version of the Calc distribution, the file README.prev
 229    contains a detailed change history from 1.00 up to 2.00.
 230
 231 \f
 232 This file is part of GNU Emacs.
 233
 234 GNU Emacs is free software; you can redistribute it and/or modify
 235 it under the terms of the GNU General Public License as published by
 236 the Free Software Foundation; either version 2, or (at your option)
 237 any later version.
 238
 239 GNU Emacs is distributed in the hope that it will be useful,
 240 but WITHOUT ANY WARRANTY; without even the implied warranty of
 241 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 242 GNU General Public License for more details.
 243
 244 You should have received a copy of the GNU General Public License
 245 along with GNU Emacs; see the file COPYING.  If not, write to the
 246 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 247 Boston, MA 02110-1301, USA.