1Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
2 Free Software Foundation, Inc.
3See the end of the file for license conditions.
4
5
6This directory contains Calc, an advanced desk calculator for GNU
7Emacs.
8
9"Calc" Copyright (C) 1990, 1991, 1992, 1993, 2001, 2002, 2003, 2004,
10 2005, 2006, 2007 Free Software Foundation, Inc.
11
12Written 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
19Currently maintained by:
20 Jay Belanger <jay.p.belanger@gmail.com>
21
22From 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
59Calc is written entirely in Emacs Lisp, for maximum portability.
60
61I 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
63exact input and output that occurred, any modes in effect (such as the
64current precision), and so on. If you find Calc is difficult to operate
65in any way, or if you have other suggestions, don't hesitate to let me
66know. If you find errors (including simple typos) in the manual, let
67me know. Even if you find no bugs at all I would love to hear your
68opinions.
69
70
71
72Summary of changes to "Calc"
73------- -- ------- -- ----
74
75
76Version 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
101Version 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
112Version 2.02e:
113
114 * Fixed an installation bug caused by recent changes to `write-region'.
115
116
117Version 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
124Version 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
131Version 2.02b:
132
133 * Minor patch to port Calc to GNU Emacs 19. Will be superseded by Calc 3.00.
134
135
136Version 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
195Version 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
222Version 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
232This file is part of GNU Emacs.
233
234GNU Emacs is free software; you can redistribute it and/or modify
235it under the terms of the GNU General Public License as published by
236the Free Software Foundation; either version 2, or (at your option)
237any later version.
238
239GNU Emacs is distributed in the hope that it will be useful,
240but WITHOUT ANY WARRANTY; without even the implied warranty of
241MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
242GNU General Public License for more details.
243
244You should have received a copy of the GNU General Public License
245along with GNU Emacs; see the file COPYING. If not, write to the
246Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
247Boston, MA 02110-1301, USA.
248