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5335a8ce | 1 | ;;; calculator.el --- a calculator for Emacs -*- lexical-binding: t -*- |
d240a249 | 2 | |
ba318903 | 3 | ;; Copyright (C) 1998, 2000-2014 Free Software Foundation, Inc. |
d240a249 | 4 | |
4ece8d61 | 5 | ;; Author: Eli Barzilay <eli@barzilay.org> |
d240a249 | 6 | ;; Keywords: tools, convenience |
d240a249 GM |
7 | |
8 | ;; This file is part of GNU Emacs. | |
9 | ||
eb3fa2cf GM |
10 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
11 | ;; it under the terms of the GNU General Public License as published by | |
12 | ;; the Free Software Foundation, either version 3 of the License, or | |
13 | ;; (at your option) any later version. | |
d240a249 | 14 | |
eb3fa2cf GM |
15 | ;; GNU Emacs is distributed in the hope that it will be useful, |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
d240a249 GM |
19 | |
20 | ;; You should have received a copy of the GNU General Public License | |
eb3fa2cf | 21 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
d240a249 | 22 | |
cbb2dddb | 23 | ;;;===================================================================== |
d240a249 GM |
24 | ;;; Commentary: |
25 | ;; | |
25c269ef | 26 | ;; A calculator for Emacs. |
5ca425fc | 27 | ;; Why should you reach for your mouse to get xcalc (calc.exe, gcalc or |
25c269ef | 28 | ;; whatever), when you have Emacs running already? |
d240a249 GM |
29 | ;; |
30 | ;; If this is not part of your Emacs distribution, then simply bind | |
31 | ;; `calculator' to a key and make it an autoloaded function, e.g.: | |
32 | ;; (autoload 'calculator "calculator" | |
25c269ef | 33 | ;; "Run the Emacs calculator." t) |
d240a249 GM |
34 | ;; (global-set-key [(control return)] 'calculator) |
35 | ;; | |
5335a8ce | 36 | ;; Written by Eli Barzilay, eli@barzilay.org |
d240a249 | 37 | ;; |
d240a249 | 38 | |
cbb2dddb | 39 | ;;;===================================================================== |
d240a249 GM |
40 | ;;; Customization: |
41 | ||
42 | (defgroup calculator nil | |
25c269ef | 43 | "Simple Emacs calculator." |
d240a249 | 44 | :prefix "calculator" |
7def2f92 | 45 | :version "21.1" |
d240a249 | 46 | :group 'tools |
eba5b4dd | 47 | :group 'applications) |
d240a249 GM |
48 | |
49 | (defcustom calculator-electric-mode nil | |
9201cc28 | 50 | "Run `calculator' electrically, in the echo area. |
25c269ef DL |
51 | Electric mode saves some place but changes the way you interact with the |
52 | calculator." | |
d240a249 GM |
53 | :type 'boolean |
54 | :group 'calculator) | |
55 | ||
86f1e1ec | 56 | (defcustom calculator-use-menu t |
9201cc28 | 57 | "Make `calculator' create a menu. |
86f1e1ec GM |
58 | Note that this requires easymenu. Must be set before loading." |
59 | :type 'boolean | |
60 | :group 'calculator) | |
61 | ||
d240a249 | 62 | (defcustom calculator-bind-escape nil |
9201cc28 | 63 | "If non-nil, set escape to exit the calculator." |
d240a249 GM |
64 | :type 'boolean |
65 | :group 'calculator) | |
66 | ||
67 | (defcustom calculator-unary-style 'postfix | |
9201cc28 | 68 | "Value is either 'prefix or 'postfix. |
d240a249 GM |
69 | This determines the default behavior of unary operators." |
70 | :type '(choice (const prefix) (const postfix)) | |
71 | :group 'calculator) | |
72 | ||
25c269ef | 73 | (defcustom calculator-prompt "Calc=%s> " |
9201cc28 | 74 | "The prompt used by the Emacs calculator. |
5335a8ce | 75 | It should contain a \"%s\" somewhere that will indicate the i/o radixes; |
bd9bb96e JB |
76 | this will be a two-character string as described in the documentation |
77 | for `calculator-mode'." | |
d240a249 GM |
78 | :type 'string |
79 | :group 'calculator) | |
80 | ||
25c269ef | 81 | (defcustom calculator-number-digits 3 |
9201cc28 | 82 | "The calculator's number of digits used for standard display. |
25c269ef DL |
83 | Used by the `calculator-standard-display' function - it will use the |
84 | format string \"%.NC\" where this number is N and C is a character given | |
85 | at runtime." | |
2826ac81 | 86 | :type 'integer |
d240a249 GM |
87 | :group 'calculator) |
88 | ||
761d3eb3 | 89 | (defcustom calculator-radix-grouping-mode t |
9201cc28 | 90 | "Use digit grouping in radix output mode. |
761d3eb3 RS |
91 | If this is set, chunks of `calculator-radix-grouping-digits' characters |
92 | will be separated by `calculator-radix-grouping-separator' when in radix | |
f5307782 JB |
93 | output mode is active (determined by `calculator-output-radix')." |
94 | :type 'boolean | |
95 | :group 'calculator) | |
761d3eb3 RS |
96 | |
97 | (defcustom calculator-radix-grouping-digits 4 | |
9201cc28 | 98 | "The number of digits used for grouping display in radix modes. |
f5307782 JB |
99 | See `calculator-radix-grouping-mode'." |
100 | :type 'integer | |
101 | :group 'calculator) | |
761d3eb3 RS |
102 | |
103 | (defcustom calculator-radix-grouping-separator "'" | |
9201cc28 | 104 | "The separator used in radix grouping display. |
f5307782 JB |
105 | See `calculator-radix-grouping-mode'." |
106 | :type 'string | |
107 | :group 'calculator) | |
761d3eb3 | 108 | |
25c269ef | 109 | (defcustom calculator-remove-zeros t |
9201cc28 | 110 | "Non-nil value means delete all redundant zero decimal digits. |
5335a8ce EB |
111 | If this value is not t and not nil, redundant zeros are removed except |
112 | for one. | |
25c269ef DL |
113 | Used by the `calculator-remove-zeros' function." |
114 | :type '(choice (const t) (const leave-decimal) (const nil)) | |
d240a249 GM |
115 | :group 'calculator) |
116 | ||
25c269ef | 117 | (defcustom calculator-displayer '(std ?n) |
9201cc28 | 118 | "A displayer specification for numerical values. |
25c269ef DL |
119 | This is the displayer used to show all numbers in an expression. Result |
120 | values will be displayed according to the first element of | |
121 | `calculator-displayers'. | |
122 | ||
123 | The displayer is a symbol, a string or an expression. A symbol should | |
124 | be the name of a one-argument function, a string is used with a single | |
125 | argument and an expression will be evaluated with the variable `num' | |
126 | bound to whatever should be displayed. If it is a function symbol, it | |
40f7e0e8 SM |
127 | should be able to handle special symbol arguments, currently `left' and |
128 | `right' which will be sent by special keys to modify display parameters | |
25c269ef DL |
129 | associated with the displayer function (for example to change the number |
130 | of digits displayed). | |
131 | ||
5335a8ce EB |
132 | An exception to the above is the case of the list (std C [G]) where C is |
133 | a character and G is an optional boolean, in this case the | |
134 | `calculator-standard-displayer' function will be used with these as | |
135 | arguments." | |
136 | :type '(choice (function) (string) (sexp) | |
137 | (list (const std) character) | |
138 | (list (const std) character boolean)) | |
f5307782 | 139 | :group 'calculator) |
25c269ef DL |
140 | |
141 | (defcustom calculator-displayers | |
2188f2d4 | 142 | '(((std ?n) "Standard display, decimal point or scientific") |
25c269ef | 143 | (calculator-eng-display "Eng display") |
5335a8ce | 144 | ((std ?f t) "Standard display, decimal point with grouping") |
2188f2d4 | 145 | ((std ?e) "Standard display, scientific") |
25c269ef | 146 | ("%S" "Emacs printer")) |
9201cc28 | 147 | "A list of displayers. |
25c269ef | 148 | Each element is a list of a displayer and a description string. The |
5335a8ce EB |
149 | first element is the one which is currently used, this is for the |
150 | display of result values not values in expressions. A displayer | |
151 | specification is the same as the values that can be stored in | |
152 | `calculator-displayer'. | |
25c269ef DL |
153 | |
154 | `calculator-rotate-displayer' rotates this list." | |
155 | :type 'sexp | |
d240a249 GM |
156 | :group 'calculator) |
157 | ||
25c269ef | 158 | (defcustom calculator-paste-decimals t |
9201cc28 | 159 | "If non-nil, convert pasted integers so they have a decimal point. |
25c269ef DL |
160 | This makes it possible to paste big integers since they will be read as |
161 | floats, otherwise the Emacs reader will fail on them." | |
d240a249 GM |
162 | :type 'boolean |
163 | :group 'calculator) | |
164 | ||
4351784f | 165 | (defcustom calculator-copy-displayer nil |
9201cc28 | 166 | "If non-nil, this is any value that can be used for |
4351784f GM |
167 | `calculator-displayer', to format a string before copying it with |
168 | `calculator-copy'. If nil, then `calculator-displayer's normal value is | |
f5307782 JB |
169 | used." |
170 | :type 'boolean | |
171 | :group 'calculator) | |
4351784f | 172 | |
d240a249 | 173 | (defcustom calculator-2s-complement nil |
9201cc28 | 174 | "If non-nil, show negative numbers in 2s complement in radix modes. |
d240a249 GM |
175 | Otherwise show as a negative number." |
176 | :type 'boolean | |
177 | :group 'calculator) | |
178 | ||
179 | (defcustom calculator-mode-hook nil | |
9201cc28 | 180 | "List of hook functions for `calculator-mode' to run. |
761d3eb3 | 181 | Note: if `calculator-electric-mode' is on, then this hook will get |
5335a8ce | 182 | activated in the minibuffer -- in that case it should not do much more |
761d3eb3 RS |
183 | than local key settings and other effects that will change things |
184 | outside the scope of calculator related code." | |
d240a249 GM |
185 | :type 'hook |
186 | :group 'calculator) | |
187 | ||
188 | (defcustom calculator-user-registers nil | |
9201cc28 | 189 | "An association list of user-defined register bindings. |
d240a249 GM |
190 | Each element in this list is a list of a character and a number that |
191 | will be stored in that character's register. | |
192 | ||
193 | For example, use this to define the golden ratio number: | |
25c269ef DL |
194 | (setq calculator-user-registers '((?g . 1.61803398875))) |
195 | before you load calculator." | |
d240a249 | 196 | :type '(repeat (cons character number)) |
4f91a816 SM |
197 | :set (lambda (_ val) |
198 | (and (boundp 'calculator-registers) | |
199 | (setq calculator-registers | |
200 | (append val calculator-registers))) | |
201 | (setq calculator-user-registers val)) | |
d240a249 GM |
202 | :group 'calculator) |
203 | ||
204 | (defcustom calculator-user-operators nil | |
9201cc28 | 205 | "A list of additional operators. |
d240a249 GM |
206 | This is a list in the same format as specified in the documentation for |
207 | `calculator-operators', that you can use to bind additional calculator | |
208 | operators. It is probably not a good idea to modify this value with | |
209 | `customize' since it is too complex... | |
210 | ||
211 | Examples: | |
212 | ||
7def2f92 DL |
213 | * A very simple one, adding a postfix \"x-to-y\" conversion keys, using |
214 | t as a prefix key: | |
d240a249 GM |
215 | |
216 | (setq calculator-user-operators | |
217 | '((\"tf\" cl-to-fr (+ 32 (/ (* X 9) 5)) 1) | |
218 | (\"tc\" fr-to-cl (/ (* (- X 32) 5) 9) 1) | |
219 | (\"tp\" kg-to-lb (/ X 0.453592) 1) | |
220 | (\"tk\" lb-to-kg (* X 0.453592) 1) | |
221 | (\"tF\" mt-to-ft (/ X 0.3048) 1) | |
222 | (\"tM\" ft-to-mt (* X 0.3048) 1))) | |
223 | ||
5335a8ce EB |
224 | * Using a function-like form is very simple: use `X' for the argument |
225 | (`Y' for the second in case of a binary operator), `TX' is a truncated | |
226 | version of `X' and `F' for a recursive call. Here is a [very | |
227 | inefficient] Fibonacci number calculation: | |
d240a249 GM |
228 | |
229 | (add-to-list 'calculator-user-operators | |
5335a8ce EB |
230 | '(\"F\" fib |
231 | (if (<= TX 1) 1 (+ (F (- TX 1)) (F (- TX 2)))))) | |
d240a249 GM |
232 | |
233 | Note that this will be either postfix or prefix, according to | |
234 | `calculator-unary-style'." | |
235 | :type '(repeat (list string symbol sexp integer integer)) | |
236 | :group 'calculator) | |
237 | ||
cbb2dddb | 238 | ;;;===================================================================== |
d240a249 GM |
239 | ;;; Code: |
240 | ||
40f7e0e8 SM |
241 | (eval-when-compile (require 'cl-lib)) |
242 | ||
cbb2dddb | 243 | ;;;--------------------------------------------------------------------- |
25c269ef DL |
244 | ;;; Variables |
245 | ||
d240a249 | 246 | (defvar calculator-initial-operators |
5335a8ce | 247 | '(;; "+"/"-" have keybindings of their own, not calculator-ops |
86f1e1ec | 248 | ("=" = identity 1 -1) |
25c269ef DL |
249 | (nobind "+" + + 2 4) |
250 | (nobind "-" - - 2 4) | |
251 | (nobind "+" + + -1 9) | |
252 | (nobind "-" - - -1 9) | |
86f1e1ec GM |
253 | ("(" \( identity -1 -1) |
254 | (")" \) identity +1 10) | |
d240a249 GM |
255 | ;; normal keys |
256 | ("|" or (logior TX TY) 2 2) | |
257 | ("#" xor (logxor TX TY) 2 2) | |
258 | ("&" and (logand TX TY) 2 3) | |
259 | ("*" * * 2 5) | |
260 | ("/" / / 2 5) | |
261 | ("\\" div (/ TX TY) 2 5) | |
262 | ("%" rem (% TX TY) 2 5) | |
263 | ("L" log log 2 6) | |
264 | ("S" sin (sin DX) x 6) | |
265 | ("C" cos (cos DX) x 6) | |
266 | ("T" tan (tan DX) x 6) | |
267 | ("IS" asin (D (asin X)) x 6) | |
268 | ("IC" acos (D (acos X)) x 6) | |
269 | ("IT" atan (D (atan X)) x 6) | |
270 | ("Q" sqrt sqrt x 7) | |
f50347a9 | 271 | ("^" ^ calculator-expt 2 7) |
d240a249 GM |
272 | ("!" ! calculator-fact x 7) |
273 | (";" 1/ (/ 1 X) 1 7) | |
274 | ("_" - - 1 8) | |
275 | ("~" ~ (lognot TX) x 8) | |
276 | (">" repR calculator-repR 1 8) | |
277 | ("<" repL calculator-repL 1 8) | |
278 | ("v" avg (/ (apply '+ L) (length L)) 0 8) | |
279 | ("l" tot (apply '+ L) 0 8) | |
280 | ) | |
281 | "A list of initial operators. | |
d240a249 GM |
282 | This is a list in the same format as `calculator-operators'. Whenever |
283 | `calculator' starts, it looks at the value of this variable, and if it | |
284 | is not empty, its contents is prepended to `calculator-operators' and | |
285 | the appropriate key bindings are made. | |
286 | ||
287 | This variable is then reset to nil. Don't use this if you want to add | |
288 | user-defined operators, use `calculator-user-operators' instead.") | |
289 | ||
290 | (defvar calculator-operators nil | |
291 | "The calculator operators, each a list with: | |
292 | ||
293 | 1. The key that is bound to for this operation (usually a string); | |
294 | ||
295 | 2. The displayed symbol for this function; | |
296 | ||
297 | 3. The function symbol, or a form that uses the variables `X' and `Y', | |
298 | (if it is a binary operator), `TX' and `TY' (truncated integer | |
299 | versions), `DX' (converted to radians if degrees mode is on), `D' | |
300 | (function for converting radians to degrees if deg mode is on), `L' | |
301 | (list of saved values), `F' (function for recursive iteration calls) | |
5335a8ce | 302 | and evaluates to the function value -- these variables are capital; |
d240a249 | 303 | |
25c269ef | 304 | 4. The function's arity, optional, one of: 2 => binary, -1 => prefix |
5335a8ce EB |
305 | unary, +1 => postfix unary, 0 => a 0-arg operator func (note that |
306 | using such a function replaces the currently entered number, if any), | |
307 | non-number (the default) => postfix or prefix as determined by | |
308 | `calculator-unary-style'; | |
d240a249 | 309 | |
5335a8ce | 310 | 5. The function's precedence -- should be in the range of 1 (lowest) to |
25c269ef | 311 | 9 (highest) (optional, defaults to 1); |
d240a249 GM |
312 | |
313 | It it possible have a unary prefix version of a binary operator if it | |
314 | comes later in this list. If the list begins with the symbol 'nobind, | |
5335a8ce | 315 | then no key binding will take place -- this is only useful for predefined |
d240a249 GM |
316 | keys. |
317 | ||
318 | Use `calculator-user-operators' to add operators to this list, see its | |
319 | documentation for an example.") | |
320 | ||
321 | (defvar calculator-stack nil | |
5335a8ce | 322 | "Stack contents -- operations and operands.") |
d240a249 GM |
323 | |
324 | (defvar calculator-curnum nil | |
325 | "Current number being entered (as a string).") | |
326 | ||
327 | (defvar calculator-stack-display nil | |
328 | "Cons of the stack and its string representation.") | |
329 | ||
330 | (defvar calculator-char-radix | |
331 | '((?D . nil) (?B . bin) (?O . oct) (?H . hex) (?X . hex)) | |
332 | "A table to convert input characters to corresponding radix symbols.") | |
333 | ||
334 | (defvar calculator-output-radix nil | |
335 | "The mode for display, one of: nil (decimal), 'bin, 'oct or 'hex.") | |
336 | ||
337 | (defvar calculator-input-radix nil | |
338 | "The mode for input, one of: nil (decimal), 'bin, 'oct or 'hex.") | |
339 | ||
340 | (defvar calculator-deg nil | |
341 | "Non-nil if trig functions operate on degrees instead of radians.") | |
342 | ||
343 | (defvar calculator-saved-list nil | |
344 | "A list of saved values collected.") | |
345 | ||
346 | (defvar calculator-saved-ptr 0 | |
347 | "The pointer to the current saved number.") | |
348 | ||
349 | (defvar calculator-add-saved nil | |
350 | "Bound to t when a value should be added to the saved-list.") | |
351 | ||
352 | (defvar calculator-display-fragile nil | |
353 | "When non-nil, we see something that the next digit should replace.") | |
354 | ||
355 | (defvar calculator-buffer nil | |
356 | "The current calculator buffer.") | |
357 | ||
25c269ef DL |
358 | (defvar calculator-eng-extra nil |
359 | "Internal value used by `calculator-eng-display'.") | |
360 | ||
361 | (defvar calculator-eng-tmp-show nil | |
362 | "Internal value used by `calculator-eng-display'.") | |
363 | ||
d240a249 GM |
364 | (defvar calculator-last-opXY nil |
365 | "The last binary operation and its arguments. | |
366 | Used for repeating operations in calculator-repR/L.") | |
367 | ||
368 | (defvar calculator-registers ; use user-bindings first | |
9e0d4f9e SM |
369 | (append calculator-user-registers |
370 | (list (cons ?e float-e) (cons ?p float-pi))) | |
d240a249 GM |
371 | "The association list of calculator register values.") |
372 | ||
373 | (defvar calculator-saved-global-map nil | |
374 | "Saved global key map.") | |
375 | ||
86f1e1ec | 376 | (defvar calculator-restart-other-mode nil |
25c269ef DL |
377 | "Used to hack restarting with the electric mode changed.") |
378 | ||
cbb2dddb | 379 | ;;;--------------------------------------------------------------------- |
25c269ef | 380 | ;;; Key bindings |
86f1e1ec | 381 | |
4d789d84 | 382 | (defvar calculator-mode-map |
86f1e1ec | 383 | (let ((map (make-sparse-keymap))) |
d240a249 GM |
384 | (suppress-keymap map t) |
385 | (define-key map "i" nil) | |
386 | (define-key map "o" nil) | |
86f1e1ec | 387 | (let ((p |
25c269ef DL |
388 | '((calculator-open-paren "[") |
389 | (calculator-close-paren "]") | |
390 | (calculator-op-or-exp "+" "-" [kp-add] [kp-subtract]) | |
391 | (calculator-digit "0" "1" "2" "3" "4" "5" "6" "7" "8" | |
392 | "9" "a" "b" "c" "d" "f" | |
393 | [kp-0] [kp-1] [kp-2] [kp-3] [kp-4] | |
394 | [kp-5] [kp-6] [kp-7] [kp-8] [kp-9]) | |
395 | (calculator-op [kp-divide] [kp-multiply]) | |
396 | (calculator-decimal "." [kp-decimal]) | |
397 | (calculator-exp "e") | |
86f1e1ec GM |
398 | (calculator-dec/deg-mode "D") |
399 | (calculator-set-register "s") | |
400 | (calculator-get-register "g") | |
401 | (calculator-radix-mode "H" "X" "O" "B") | |
402 | (calculator-radix-input-mode "id" "ih" "ix" "io" "ib" | |
403 | "iD" "iH" "iX" "iO" "iB") | |
404 | (calculator-radix-output-mode "od" "oh" "ox" "oo" "ob" | |
405 | "oD" "oH" "oX" "oO" "oB") | |
25c269ef DL |
406 | (calculator-rotate-displayer "'") |
407 | (calculator-rotate-displayer-back "\"") | |
761d3eb3 | 408 | (calculator-displayer-prev "{") |
4351784f | 409 | (calculator-displayer-next "}") |
86f1e1ec GM |
410 | (calculator-saved-up [up] [?\C-p]) |
411 | (calculator-saved-down [down] [?\C-n]) | |
412 | (calculator-quit "q" [?\C-g]) | |
25c269ef DL |
413 | (calculator-enter [enter] [linefeed] [kp-enter] |
414 | [return] [?\r] [?\n]) | |
86f1e1ec GM |
415 | (calculator-save-on-list " " [space]) |
416 | (calculator-clear-saved [?\C-c] [(control delete)]) | |
417 | (calculator-save-and-quit [(control return)] | |
418 | [(control kp-enter)]) | |
cbb2dddb | 419 | (calculator-paste [insert] [(shift insert)] |
761d3eb3 | 420 | [paste] [mouse-2] [?\C-y]) |
86f1e1ec GM |
421 | (calculator-clear [delete] [?\C-?] [?\C-d]) |
422 | (calculator-help [?h] [??] [f1] [help]) | |
761d3eb3 | 423 | (calculator-copy [(control insert)] [copy]) |
86f1e1ec GM |
424 | (calculator-backspace [backspace]) |
425 | ))) | |
d240a249 | 426 | (while p |
5335a8ce EB |
427 | ;; reverse the keys so earlier definitions come last -- makes |
428 | ;; the more sensible bindings visible in the menu | |
429 | (let ((func (caar p)) (keys (reverse (cdar p)))) | |
86f1e1ec GM |
430 | (while keys |
431 | (define-key map (car keys) func) | |
432 | (setq keys (cdr keys)))) | |
d240a249 GM |
433 | (setq p (cdr p)))) |
434 | (if calculator-bind-escape | |
435 | (progn (define-key map [?\e] 'calculator-quit) | |
436 | (define-key map [escape] 'calculator-quit)) | |
437 | (define-key map [?\e ?\e ?\e] 'calculator-quit)) | |
438 | ;; make C-h work in text-mode | |
439 | (or window-system (define-key map [?\C-h] 'calculator-backspace)) | |
86f1e1ec | 440 | ;; set up a menu |
5335a8ce | 441 | (when (and calculator-use-menu (not (boundp 'calculator-menu))) |
86f1e1ec GM |
442 | (let ((radix-selectors |
443 | (mapcar (lambda (x) | |
444 | `([,(nth 0 x) | |
445 | (calculator-radix-mode ,(nth 2 x)) | |
446 | :style radio | |
447 | :keys ,(nth 2 x) | |
448 | :selected | |
449 | (and | |
450 | (eq calculator-input-radix ',(nth 1 x)) | |
451 | (eq calculator-output-radix ',(nth 1 x)))] | |
452 | [,(concat (nth 0 x) " Input") | |
453 | (calculator-radix-input-mode ,(nth 2 x)) | |
454 | :keys ,(concat "i" (downcase (nth 2 x))) | |
455 | :style radio | |
456 | :selected | |
457 | (eq calculator-input-radix ',(nth 1 x))] | |
458 | [,(concat (nth 0 x) " Output") | |
459 | (calculator-radix-output-mode ,(nth 2 x)) | |
460 | :keys ,(concat "o" (downcase (nth 2 x))) | |
461 | :style radio | |
462 | :selected | |
463 | (eq calculator-output-radix ',(nth 1 x))])) | |
464 | '(("Decimal" nil "D") | |
465 | ("Binary" bin "B") | |
466 | ("Octal" oct "O") | |
467 | ("Hexadecimal" hex "H")))) | |
4d789d84 SM |
468 | (op (lambda (name key) |
469 | `[,name (calculator-op ,key) :keys ,key]))) | |
86f1e1ec | 470 | (easy-menu-define |
4d789d84 SM |
471 | calculator-menu map "Calculator menu." |
472 | `("Calculator" | |
473 | ["Help" | |
474 | (let ((last-command 'calculator-help)) (calculator-help)) | |
475 | :keys "?"] | |
476 | "---" | |
477 | ["Copy" calculator-copy] | |
478 | ["Paste" calculator-paste] | |
86f1e1ec | 479 | "---" |
4d789d84 SM |
480 | ["Electric mode" |
481 | (progn (calculator-quit) | |
482 | (setq calculator-restart-other-mode t) | |
4f91a816 | 483 | (run-with-timer 0.1 nil (lambda () (message nil))) |
4d789d84 SM |
484 | ;; the message from the menu will be visible, |
485 | ;; couldn't make it go away... | |
486 | (calculator)) | |
487 | :active (not calculator-electric-mode)] | |
488 | ["Normal mode" | |
489 | (progn (setq calculator-restart-other-mode t) | |
490 | (calculator-quit)) | |
491 | :active calculator-electric-mode] | |
86f1e1ec | 492 | "---" |
4d789d84 SM |
493 | ("Functions" |
494 | ,(funcall op "Repeat-right" ">") | |
495 | ,(funcall op "Repeat-left" "<") | |
496 | "------General------" | |
497 | ,(funcall op "Reciprocal" ";") | |
498 | ,(funcall op "Log" "L") | |
499 | ,(funcall op "Square-root" "Q") | |
500 | ,(funcall op "Factorial" "!") | |
501 | "------Trigonometric------" | |
502 | ,(funcall op "Sinus" "S") | |
503 | ,(funcall op "Cosine" "C") | |
504 | ,(funcall op "Tangent" "T") | |
505 | ,(funcall op "Inv-Sinus" "IS") | |
506 | ,(funcall op "Inv-Cosine" "IC") | |
507 | ,(funcall op "Inv-Tangent" "IT") | |
508 | "------Bitwise------" | |
509 | ,(funcall op "Or" "|") | |
510 | ,(funcall op "Xor" "#") | |
511 | ,(funcall op "And" "&") | |
512 | ,(funcall op "Not" "~")) | |
513 | ("Saved List" | |
514 | ["Eval+Save" calculator-save-on-list] | |
515 | ["Prev number" calculator-saved-up] | |
516 | ["Next number" calculator-saved-down] | |
517 | ["Delete current" calculator-clear | |
518 | :active (and calculator-display-fragile | |
519 | calculator-saved-list | |
520 | (= (car calculator-stack) | |
521 | (nth calculator-saved-ptr | |
522 | calculator-saved-list)))] | |
523 | ["Delete all" calculator-clear-saved] | |
86f1e1ec | 524 | "---" |
4d789d84 SM |
525 | ,(funcall op "List-total" "l") |
526 | ,(funcall op "List-average" "v")) | |
527 | ("Registers" | |
528 | ["Get register" calculator-get-register] | |
529 | ["Set register" calculator-set-register]) | |
530 | ("Modes" | |
531 | ["Radians" | |
532 | (progn | |
533 | (and (or calculator-input-radix calculator-output-radix) | |
534 | (calculator-radix-mode "D")) | |
535 | (and calculator-deg (calculator-dec/deg-mode))) | |
536 | :keys "D" | |
537 | :style radio | |
538 | :selected (not (or calculator-input-radix | |
539 | calculator-output-radix | |
540 | calculator-deg))] | |
541 | ["Degrees" | |
542 | (progn | |
543 | (and (or calculator-input-radix calculator-output-radix) | |
544 | (calculator-radix-mode "D")) | |
545 | (or calculator-deg (calculator-dec/deg-mode))) | |
546 | :keys "D" | |
547 | :style radio | |
548 | :selected (and calculator-deg | |
549 | (not (or calculator-input-radix | |
550 | calculator-output-radix)))] | |
551 | "---" | |
552 | ,@(mapcar 'car radix-selectors) | |
553 | ("Separate I/O" | |
554 | ,@(mapcar (lambda (x) (nth 1 x)) radix-selectors) | |
555 | "---" | |
556 | ,@(mapcar (lambda (x) (nth 2 x)) radix-selectors))) | |
557 | ("Decimal Display" | |
558 | ,@(mapcar (lambda (d) | |
559 | (vector (cadr d) | |
560 | ;; Note: inserts actual object here | |
561 | `(calculator-rotate-displayer ',d))) | |
562 | calculator-displayers) | |
563 | "---" | |
564 | ["Change Prev Display" calculator-displayer-prev] | |
565 | ["Change Next Display" calculator-displayer-next]) | |
25c269ef | 566 | "---" |
4d789d84 SM |
567 | ["Copy+Quit" calculator-save-and-quit] |
568 | ["Quit" calculator-quit])))) | |
569 | map) | |
570 | "The calculator key map.") | |
d240a249 | 571 | |
cbb2dddb | 572 | ;;;--------------------------------------------------------------------- |
25c269ef DL |
573 | ;;; Startup and mode stuff |
574 | ||
4d789d84 | 575 | (define-derived-mode calculator-mode fundamental-mode "Calculator" |
25c269ef DL |
576 | ;; this help is also used as the major help screen |
577 | "A [not so] simple calculator for Emacs. | |
d240a249 GM |
578 | |
579 | This calculator is used in the same way as other popular calculators | |
5335a8ce | 580 | like xcalc or calc.exe -- but using an Emacs interface. |
d240a249 GM |
581 | |
582 | Expressions are entered using normal infix notation, parens are used as | |
583 | normal. Unary functions are usually postfix, but some depends on the | |
584 | value of `calculator-unary-style' (if the style for an operator below is | |
585 | specified, then it is fixed, otherwise it depends on this variable). | |
586 | `+' and `-' can be used as either binary operators or prefix unary | |
587 | operators. Numbers can be entered with exponential notation using `e', | |
588 | except when using a non-decimal radix mode for input (in this case `e' | |
5335a8ce | 589 | will be the hexadecimal digit). |
d240a249 GM |
590 | |
591 | Here are the editing keys: | |
592 | * `RET' `=' evaluate the current expression | |
593 | * `C-insert' copy the whole current expression to the `kill-ring' | |
86f1e1ec | 594 | * `C-return' evaluate, save result the `kill-ring' and exit |
d240a249 GM |
595 | * `insert' paste a number if the one was copied (normally) |
596 | * `delete' `C-d' clear last argument or whole expression (hit twice) | |
597 | * `backspace' delete a digit or a previous expression element | |
598 | * `h' `?' pop-up a quick reference help | |
599 | * `ESC' `q' exit (`ESC' can be used if `calculator-bind-escape' is | |
600 | non-nil, otherwise use three consecutive `ESC's) | |
601 | ||
602 | These operators are pre-defined: | |
603 | * `+' `-' `*' `/' the common binary operators | |
604 | * `\\' `%' integer division and reminder | |
605 | * `_' `;' postfix unary negation and reciprocal | |
606 | * `^' `L' binary operators for x^y and log(x) in base y | |
607 | * `Q' `!' unary square root and factorial | |
5335a8ce EB |
608 | * `S' `C' `T' unary trigonometric operators: sin, cos and tan |
609 | * `|' `#' `&' `~' bitwise operators: or, xor, and, not | |
d240a249 GM |
610 | |
611 | The trigonometric functions can be inverted if prefixed with an `I', see | |
612 | below for the way to use degrees instead of the default radians. | |
613 | ||
614 | Two special postfix unary operators are `>' and `<': whenever a binary | |
615 | operator is performed, it is remembered along with its arguments; then | |
616 | `>' (`<') will apply the same operator with the same right (left) | |
617 | argument. | |
618 | ||
619 | hex/oct/bin modes can be set for input and for display separately. | |
620 | Another toggle-able mode is for using degrees instead of radians for | |
621 | trigonometric functions. | |
622 | The keys to switch modes are (`X' is shortcut for `H'): | |
623 | * `D' switch to all-decimal mode, or toggle degrees/radians | |
624 | * `B' `O' `H' `X' binary/octal/hexadecimal modes for input & display | |
625 | * `i' `o' followed by one of `D' `B' `O' `H' `X' (case | |
626 | insensitive) sets only the input or display radix mode | |
627 | The prompt indicates the current modes: | |
628 | * \"D=\": degrees mode; | |
629 | * \"?=\": (? is B/O/H) this is the radix for both input and output; | |
630 | * \"=?\": (? is B/O/H) the display radix (when input is decimal); | |
631 | * \"??\": (? is D/B/O/H) 1st char for input radix, 2nd for display. | |
632 | ||
761d3eb3 RS |
633 | Also, the quote key can be used to switch display modes for decimal |
634 | numbers (double-quote rotates back), and the two brace characters | |
5335a8ce EB |
635 | \(\"{\" and \"}\" change display parameters that these displayers use, |
636 | if they handle such). If output is using any radix mode, then these | |
637 | keys toggle digit grouping mode and the chunk size. | |
25c269ef | 638 | |
d240a249 GM |
639 | Values can be saved for future reference in either a list of saved |
640 | values, or in registers. | |
641 | ||
642 | The list of saved values is useful for statistics operations on some | |
643 | collected data. It is possible to navigate in this list, and if the | |
644 | value shown is the current one on the list, an indication is displayed | |
645 | as \"[N]\" if this is the last number and there are N numbers, or | |
646 | \"[M/N]\" if the M-th value is shown. | |
647 | * `SPC' evaluate the current value as usual, but also adds | |
648 | the result to the list of saved values | |
649 | * `l' `v' computes total / average of saved values | |
650 | * `up' `C-p' browse to the previous value in the list | |
651 | * `down' `C-n' browse to the next value in the list | |
652 | * `delete' `C-d' remove current value from the list (if it is on it) | |
653 | * `C-delete' `C-c' delete the whole list | |
654 | ||
655 | Registers are variable-like place-holders for values: | |
656 | * `s' followed by a character attach the current value to that character | |
657 | * `g' followed by a character fetches the attached value | |
658 | ||
659 | There are many variables that can be used to customize the calculator. | |
660 | Some interesting customization variables are: | |
661 | * `calculator-electric-mode' use only the echo-area electrically. | |
662 | * `calculator-unary-style' set most unary ops to pre/postfix style. | |
663 | * `calculator-user-registers' to define user-preset registers. | |
664 | * `calculator-user-operators' to add user-defined operators. | |
665 | See the documentation for these variables, and \"calculator.el\" for | |
666 | more information. | |
667 | ||
4d789d84 | 668 | \\{calculator-mode-map}") |
d240a249 | 669 | |
f440830d GM |
670 | (declare-function Electric-command-loop "electric" |
671 | (return-tag &optional prompt inhibit-quitting | |
672 | loop-function loop-state)) | |
25c269ef | 673 | |
d240a249 GM |
674 | ;;;###autoload |
675 | (defun calculator () | |
25c269ef | 676 | "Run the Emacs calculator. |
d240a249 GM |
677 | See the documentation for `calculator-mode' for more information." |
678 | (interactive) | |
5335a8ce | 679 | (when calculator-restart-other-mode |
86f1e1ec | 680 | (setq calculator-electric-mode (not calculator-electric-mode))) |
5335a8ce EB |
681 | (when calculator-initial-operators |
682 | (calculator-add-operators calculator-initial-operators) | |
683 | (setq calculator-initial-operators nil) | |
684 | ;; don't change this since it is a customization variable, | |
685 | ;; its set function will add any new operators | |
686 | (calculator-add-operators calculator-user-operators)) | |
cc234da9 | 687 | (setq calculator-buffer (get-buffer-create "*calculator*")) |
d240a249 GM |
688 | (if calculator-electric-mode |
689 | (save-window-excursion | |
5335a8ce EB |
690 | (require 'electric) (message nil) ; hide load message |
691 | (let (old-g-map old-l-map | |
692 | (old-buf (window-buffer (minibuffer-window))) | |
693 | (echo-keystrokes 0) | |
d240a249 | 694 | (garbage-collection-messages nil)) ; no gc msg when electric |
cc234da9 | 695 | (set-window-buffer (minibuffer-window) calculator-buffer) |
d240a249 GM |
696 | (select-window (minibuffer-window)) |
697 | (calculator-reset) | |
698 | (calculator-update-display) | |
699 | (setq old-l-map (current-local-map)) | |
700 | (setq old-g-map (current-global-map)) | |
701 | (setq calculator-saved-global-map (current-global-map)) | |
86f1e1ec | 702 | (use-local-map nil) |
d240a249 | 703 | (use-global-map calculator-mode-map) |
761d3eb3 | 704 | (run-hooks 'calculator-mode-hook) |
d240a249 GM |
705 | (unwind-protect |
706 | (catch 'calculator-done | |
707 | (Electric-command-loop | |
708 | 'calculator-done | |
709 | ;; can't use 'noprompt, bug in electric.el | |
4f91a816 | 710 | (lambda () 'noprompt) |
d240a249 | 711 | nil |
45fdb482 | 712 | (lambda (_x _y) (calculator-update-display)))) |
5335a8ce EB |
713 | (set-window-buffer (minibuffer-window) old-buf) |
714 | (kill-buffer calculator-buffer) | |
d240a249 GM |
715 | (use-local-map old-l-map) |
716 | (use-global-map old-g-map)))) | |
86f1e1ec | 717 | (progn |
4351784f GM |
718 | (cond |
719 | ((not (get-buffer-window calculator-buffer)) | |
a4e32226 | 720 | (let ((window-min-height 2)) |
37269466 CY |
721 | ;; maybe leave two lines for our window because of the |
722 | ;; normal `raised' mode line | |
5335a8ce EB |
723 | (select-window (split-window-below |
724 | (if (calculator-need-3-lines) -3 -2))) | |
4351784f GM |
725 | (switch-to-buffer calculator-buffer))) |
726 | ((not (eq (current-buffer) calculator-buffer)) | |
727 | (select-window (get-buffer-window calculator-buffer)))) | |
86f1e1ec GM |
728 | (calculator-mode) |
729 | (setq buffer-read-only t) | |
730 | (calculator-reset) | |
731 | (message "Hit `?' For a quick help screen."))) | |
5335a8ce | 732 | (when (and calculator-restart-other-mode calculator-electric-mode) |
86f1e1ec | 733 | (calculator))) |
d240a249 | 734 | |
5335a8ce EB |
735 | (defun calculator-need-3-lines () |
736 | ;; If the mode line might interfere with the calculator buffer, use 3 | |
737 | ;; lines instead. | |
738 | (let* ((dh (face-attribute 'default :height)) | |
739 | (mh (face-attribute 'mode-line :height))) | |
740 | ;; if the mode line is shorter than the default, stick with 2 lines | |
741 | ;; (it may be necessary to check how much shorter) | |
742 | (and (not (or (and (integerp dh) (integerp mh) (< mh dh)) | |
743 | (and (numberp mh) (not (integerp mh)) (< mh 1)))) | |
744 | (or ;; if the mode line is taller than the default, use 3 lines | |
745 | (and (integerp dh) (integerp mh) (> mh dh)) | |
746 | (and (numberp mh) (not (integerp mh)) (> mh 1)) | |
747 | ;; if the mode line has a box with non-negative line-width, | |
748 | ;; use 3 lines | |
749 | (let* ((bx (face-attribute 'mode-line :box)) | |
750 | (lh (plist-get bx :line-width))) | |
751 | (and bx (or (not lh) (> lh 0)))) | |
752 | ;; if the mode line has an overline, use 3 lines | |
753 | (not (memq (face-attribute 'mode-line :overline) | |
754 | '(nil unspecified))))))) | |
755 | ||
761d3eb3 | 756 | (defun calculator-message (string &rest arguments) |
5335a8ce | 757 | "Same as `message', but also handle electric mode." |
761d3eb3 | 758 | (apply 'message string arguments) |
5335a8ce | 759 | (when calculator-electric-mode (sit-for 1) (message nil))) |
761d3eb3 | 760 | |
cbb2dddb | 761 | ;;;--------------------------------------------------------------------- |
2188f2d4 | 762 | ;;; Operators |
25c269ef | 763 | |
d240a249 | 764 | (defun calculator-op-arity (op) |
5335a8ce EB |
765 | "Return OP's arity. |
766 | Current results are one of 2 (binary), +1 (postfix), -1 (prefix), or | |
767 | 0 (nullary)." | |
768 | (let ((arity (nth 3 op))) | |
769 | (cond ((numberp arity) arity) | |
770 | ((eq calculator-unary-style 'postfix) +1) | |
771 | (t -1)))) | |
d240a249 GM |
772 | |
773 | (defun calculator-op-prec (op) | |
774 | "Return OP's precedence for reducing when inserting into the stack. | |
775 | Defaults to 1." | |
776 | (or (nth 4 op) 1)) | |
777 | ||
778 | (defun calculator-add-operators (more-ops) | |
779 | "This function handles operator addition. | |
780 | Adds MORE-OPS to `calculator-operator', called initially to handle | |
781 | `calculator-initial-operators' and `calculator-user-operators'." | |
782 | (let ((added-ops nil)) | |
783 | (while more-ops | |
5335a8ce EB |
784 | (or (eq (caar more-ops) 'nobind) |
785 | (let ((i -1) (key (caar more-ops))) | |
d240a249 GM |
786 | ;; make sure the key is undefined, so it's easy to define |
787 | ;; prefix keys | |
788 | (while (< (setq i (1+ i)) (length key)) | |
789 | (or (keymapp | |
790 | (lookup-key calculator-mode-map | |
791 | (substring key 0 (1+ i)))) | |
792 | (progn | |
793 | (define-key | |
794 | calculator-mode-map (substring key 0 (1+ i)) nil) | |
795 | (setq i (length key))))) | |
796 | (define-key calculator-mode-map key 'calculator-op))) | |
5335a8ce EB |
797 | (setq added-ops (cons (if (eq (caar more-ops) 'nobind) |
798 | (cdar more-ops) | |
d240a249 GM |
799 | (car more-ops)) |
800 | added-ops)) | |
801 | (setq more-ops (cdr more-ops))) | |
802 | ;; added-ops come first, but in correct order | |
803 | (setq calculator-operators | |
804 | (append (nreverse added-ops) calculator-operators)))) | |
805 | ||
cbb2dddb | 806 | ;;;--------------------------------------------------------------------- |
25c269ef DL |
807 | ;;; Display stuff |
808 | ||
d240a249 GM |
809 | (defun calculator-reset () |
810 | "Reset calculator variables." | |
86f1e1ec GM |
811 | (or calculator-restart-other-mode |
812 | (setq calculator-stack nil | |
813 | calculator-curnum nil | |
814 | calculator-stack-display nil | |
815 | calculator-display-fragile nil)) | |
816 | (setq calculator-restart-other-mode nil) | |
d240a249 GM |
817 | (calculator-update-display)) |
818 | ||
5335a8ce | 819 | (defun calculator-get-display () |
d240a249 | 820 | "Return a string to display. |
5335a8ce EB |
821 | The result should not exceed the screen width." |
822 | (let* ((in-r (and calculator-input-radix | |
823 | (char-to-string | |
824 | (car (rassq calculator-input-radix | |
825 | calculator-char-radix))))) | |
826 | (out-r (and calculator-output-radix | |
827 | (char-to-string | |
828 | (car (rassq calculator-output-radix | |
829 | calculator-char-radix))))) | |
830 | (prompt (format calculator-prompt | |
831 | (cond ((or in-r out-r) | |
832 | (concat (or in-r "=") | |
833 | (if (equal in-r out-r) "=" | |
834 | (or out-r "=")))) | |
835 | (calculator-deg "D=") | |
836 | (t "==")))) | |
837 | (expr | |
838 | (concat (cdr calculator-stack-display) | |
d240a249 | 839 | (cond |
5335a8ce EB |
840 | ;; entering a number |
841 | (calculator-curnum (concat calculator-curnum "_")) | |
842 | ;; showing a result | |
843 | ((and (= 1 (length calculator-stack)) | |
844 | calculator-display-fragile) | |
845 | nil) | |
846 | ;; waiting for a number or an operator | |
847 | (t "?")))) | |
848 | (trim (+ (length expr) (length prompt) 1 (- (window-width))))) | |
849 | (concat prompt (if (<= trim 0) expr (substring expr trim))))) | |
d240a249 | 850 | |
761d3eb3 RS |
851 | (defun calculator-string-to-number (str) |
852 | "Convert the given STR to a number, according to the value of | |
853 | `calculator-input-radix'." | |
d240a249 GM |
854 | (if calculator-input-radix |
855 | (let ((radix | |
856 | (cdr (assq calculator-input-radix | |
857 | '((bin . 2) (oct . 8) (hex . 16))))) | |
761d3eb3 RS |
858 | (i -1) (value 0) (new-value 0)) |
859 | ;; assume mostly valid input (e.g., characters in range) | |
860 | (while (< (setq i (1+ i)) (length str)) | |
861 | (setq new-value | |
862 | (let* ((ch (upcase (aref str i))) | |
863 | (n (cond ((< ch ?0) nil) | |
864 | ((<= ch ?9) (- ch ?0)) | |
865 | ((< ch ?A) nil) | |
866 | ((<= ch ?Z) (- ch (- ?A 10))) | |
867 | (t nil)))) | |
868 | (if (and n (<= 0 n) (< n radix)) | |
869 | (+ n (* radix value)) | |
870 | (progn | |
871 | (calculator-message | |
872 | "Warning: Ignoring bad input character `%c'." ch) | |
873 | (sit-for 1) | |
874 | value)))) | |
5335a8ce | 875 | (when (if (< new-value 0) (> value 0) (< value 0)) |
761d3eb3 RS |
876 | (calculator-message "Warning: Overflow in input.")) |
877 | (setq value new-value)) | |
d240a249 | 878 | value) |
761d3eb3 RS |
879 | (car (read-from-string |
880 | (cond ((equal "." str) "0.0") | |
45fdb482 JB |
881 | ((string-match-p "[eE][+-]?$" str) (concat str "0")) |
882 | ((string-match-p "\\.[0-9]\\|[eE]" str) str) | |
883 | ((string-match-p "\\." str) | |
761d3eb3 RS |
884 | ;; do this because Emacs reads "23." as an integer |
885 | (concat str "0")) | |
886 | ((stringp str) (concat str ".0")) | |
887 | (t "0.0")))))) | |
888 | ||
5335a8ce EB |
889 | (defun calculator-push-curnum () |
890 | "Push the numeric value of the displayed number to the stack." | |
891 | (when calculator-curnum | |
892 | (push (calculator-string-to-number calculator-curnum) | |
893 | calculator-stack) | |
894 | (setq calculator-curnum nil))) | |
d240a249 | 895 | |
25c269ef DL |
896 | (defun calculator-rotate-displayer (&optional new-disp) |
897 | "Switch to the next displayer on the `calculator-displayers' list. | |
898 | Can be called with an optional argument NEW-DISP to force rotation to | |
761d3eb3 RS |
899 | that argument. |
900 | If radix output mode is active, toggle digit grouping." | |
25c269ef | 901 | (interactive) |
761d3eb3 RS |
902 | (cond |
903 | (calculator-output-radix | |
904 | (setq calculator-radix-grouping-mode | |
905 | (not calculator-radix-grouping-mode)) | |
906 | (calculator-message | |
907 | "Digit grouping mode %s." | |
908 | (if calculator-radix-grouping-mode "ON" "OFF"))) | |
909 | (t | |
910 | (setq calculator-displayers | |
911 | (if (and new-disp (memq new-disp calculator-displayers)) | |
912 | (let ((tmp nil)) | |
913 | (while (not (eq (car calculator-displayers) new-disp)) | |
914 | (setq tmp (cons (car calculator-displayers) tmp)) | |
915 | (setq calculator-displayers | |
916 | (cdr calculator-displayers))) | |
917 | (setq calculator-displayers | |
918 | (nconc calculator-displayers (nreverse tmp)))) | |
919 | (nconc (cdr calculator-displayers) | |
920 | (list (car calculator-displayers))))) | |
921 | (calculator-message | |
922 | "Using %s." (cadr (car calculator-displayers))))) | |
25c269ef DL |
923 | (calculator-enter)) |
924 | ||
925 | (defun calculator-rotate-displayer-back () | |
761d3eb3 RS |
926 | "Like `calculator-rotate-displayer', but rotates modes back. |
927 | If radix output mode is active, toggle digit grouping." | |
25c269ef DL |
928 | (interactive) |
929 | (calculator-rotate-displayer (car (last calculator-displayers)))) | |
930 | ||
4351784f | 931 | (defun calculator-displayer-prev () |
5335a8ce | 932 | "Send the current displayer function a `left' argument. |
25c269ef | 933 | This is used to modify display arguments (if the current displayer |
761d3eb3 RS |
934 | function supports this). |
935 | If radix output mode is active, increase the grouping size." | |
25c269ef | 936 | (interactive) |
761d3eb3 RS |
937 | (if calculator-output-radix |
938 | (progn (setq calculator-radix-grouping-digits | |
939 | (1+ calculator-radix-grouping-digits)) | |
940 | (calculator-enter)) | |
941 | (and (car calculator-displayers) | |
942 | (let ((disp (caar calculator-displayers))) | |
5335a8ce EB |
943 | (cond ((symbolp disp) (funcall disp 'left)) |
944 | ((and (consp disp) (eq 'std (car disp))) | |
945 | (calculator-standard-displayer 'left))))))) | |
25c269ef | 946 | |
4351784f | 947 | (defun calculator-displayer-next () |
5335a8ce | 948 | "Send the current displayer function a `right' argument. |
25c269ef | 949 | This is used to modify display arguments (if the current displayer |
761d3eb3 RS |
950 | function supports this). |
951 | If radix output mode is active, decrease the grouping size." | |
25c269ef | 952 | (interactive) |
761d3eb3 RS |
953 | (if calculator-output-radix |
954 | (progn (setq calculator-radix-grouping-digits | |
955 | (max 2 (1- calculator-radix-grouping-digits))) | |
956 | (calculator-enter)) | |
957 | (and (car calculator-displayers) | |
958 | (let ((disp (caar calculator-displayers))) | |
5335a8ce EB |
959 | (cond ((symbolp disp) (funcall disp 'right)) |
960 | ((and (consp disp) (eq 'std (car disp))) | |
961 | (calculator-standard-displayer 'right))))))) | |
25c269ef DL |
962 | |
963 | (defun calculator-remove-zeros (numstr) | |
a1ff7705 JB |
964 | "Get a number string NUMSTR and remove unnecessary zeros. |
965 | The behavior of this function is controlled by | |
25c269ef | 966 | `calculator-remove-zeros'." |
5335a8ce EB |
967 | (let* ((s (if (not (eq calculator-remove-zeros t)) numstr |
968 | ;; remove all redundant zeros leaving an integer | |
969 | (replace-regexp-in-string | |
970 | "\\.0+\\([eE].*\\)?$" "\\1" numstr))) | |
971 | (s (if (not calculator-remove-zeros) s | |
972 | ;; remove zeros, except for first after the "." | |
973 | (replace-regexp-in-string | |
974 | "\\(\\..[0-9]*?\\)0+\\([eE].*\\)?$" "\\1\\2" s)))) | |
975 | s)) | |
976 | ||
977 | (defun calculator-groupize-number (str n sep &optional fromleft) | |
978 | "Return the input string STR with occurrences of SEP that separate | |
979 | every N characters starting from the right, or from the left if | |
980 | FROMLEFT is true." | |
981 | (let* ((len (length str)) (i (/ len n)) (j (% len n)) | |
982 | (r (if (or (not fromleft) (= j 0)) '() | |
983 | (list (substring str (- len j)))))) | |
984 | (while (> i 0) | |
985 | (let* ((e (* i n)) (e (if fromleft e (+ e j)))) | |
986 | (push (substring str (- e n) e) r)) | |
987 | (setq i (1- i))) | |
988 | (when (and (not fromleft) (> j 0)) | |
989 | (push (substring str 0 j) r)) | |
990 | (mapconcat 'identity r sep))) | |
991 | ||
992 | (defun calculator-standard-displayer (num &optional char group-p) | |
25c269ef DL |
993 | "Standard display function, used to display NUM. |
994 | Its behavior is determined by `calculator-number-digits' and the given | |
995 | CHAR argument (both will be used to compose a format string). If the | |
996 | char is \"n\" then this function will choose one between %f or %e, this | |
997 | is a work around %g jumping to exponential notation too fast. | |
998 | ||
5335a8ce EB |
999 | It will also split digit sequences into comma-separated groups |
1000 | and/or remove redundant zeros. | |
25c269ef | 1001 | |
5335a8ce EB |
1002 | The special `left' and `right' symbols will make it change the current |
1003 | number of digits displayed (`calculator-number-digits')." | |
25c269ef DL |
1004 | (if (symbolp num) |
1005 | (cond ((eq num 'left) | |
1006 | (and (> calculator-number-digits 0) | |
1007 | (setq calculator-number-digits | |
1008 | (1- calculator-number-digits)) | |
1009 | (calculator-enter))) | |
1010 | ((eq num 'right) | |
1011 | (setq calculator-number-digits | |
1012 | (1+ calculator-number-digits)) | |
1013 | (calculator-enter))) | |
5335a8ce EB |
1014 | (let* ((s (if (eq char ?n) |
1015 | (let ((n (abs num))) | |
1016 | (if (or (and (< 0 n) (< n 0.001)) (< 1e8 n)) ?e ?f)) | |
1017 | char)) | |
1018 | (s (format "%%.%s%c" calculator-number-digits s)) | |
1019 | (s (calculator-remove-zeros (format s num))) | |
1020 | (s (if (or (not group-p) (string-match-p "[eE]" s)) s | |
1021 | (replace-regexp-in-string | |
cc43334a EB |
1022 | "\\([0-9]+\\)\\(?:\\..*\\|$\\)" |
1023 | (lambda (_) (calculator-groupize-number | |
1024 | (match-string 1 s) 3 ",")) | |
5335a8ce EB |
1025 | s nil nil 1)))) |
1026 | s))) | |
25c269ef DL |
1027 | |
1028 | (defun calculator-eng-display (num) | |
1029 | "Display NUM in engineering notation. | |
1030 | The number of decimal digits used is controlled by | |
1031 | `calculator-number-digits', so to change it at runtime you have to use | |
5335a8ce | 1032 | the `left' or `right' when one of the standard modes is used." |
25c269ef DL |
1033 | (if (symbolp num) |
1034 | (cond ((eq num 'left) | |
1035 | (setq calculator-eng-extra | |
5335a8ce | 1036 | (if calculator-eng-extra (1+ calculator-eng-extra) 1)) |
25c269ef DL |
1037 | (let ((calculator-eng-tmp-show t)) (calculator-enter))) |
1038 | ((eq num 'right) | |
1039 | (setq calculator-eng-extra | |
5335a8ce | 1040 | (if calculator-eng-extra (1- calculator-eng-extra) -1)) |
25c269ef DL |
1041 | (let ((calculator-eng-tmp-show t)) (calculator-enter)))) |
1042 | (let ((exp 0)) | |
5335a8ce EB |
1043 | (unless (= 0 num) |
1044 | (while (< (abs num) 1.0) | |
1045 | (setq num (* num 1000.0)) (setq exp (- exp 3))) | |
1046 | (while (> (abs num) 999.0) | |
1047 | (setq num (/ num 1000.0)) (setq exp (+ exp 3))) | |
1048 | (when (and calculator-eng-tmp-show | |
1049 | (not (= 0 calculator-eng-extra))) | |
1050 | (let ((i calculator-eng-extra)) | |
1051 | (while (> i 0) | |
1052 | (setq num (* num 1000.0)) (setq exp (- exp 3)) | |
1053 | (setq i (1- i))) | |
1054 | (while (< i 0) | |
1055 | (setq num (/ num 1000.0)) (setq exp (+ exp 3)) | |
1056 | (setq i (1+ i)))))) | |
25c269ef | 1057 | (or calculator-eng-tmp-show (setq calculator-eng-extra nil)) |
5335a8ce | 1058 | (let ((str (format (format "%%.%sf" calculator-number-digits) |
25c269ef DL |
1059 | num))) |
1060 | (concat (let ((calculator-remove-zeros | |
1061 | ;; make sure we don't leave integers | |
1062 | (and calculator-remove-zeros 'x))) | |
1063 | (calculator-remove-zeros str)) | |
1064 | "e" (number-to-string exp)))))) | |
1065 | ||
761d3eb3 | 1066 | (defun calculator-number-to-string (num) |
d240a249 GM |
1067 | "Convert NUM to a displayable string." |
1068 | (cond | |
5335a8ce EB |
1069 | ;; operators are printed here, the rest is for numbers |
1070 | ((not (numberp num)) (prin1-to-string (nth 1 num) t)) | |
1071 | ;; %f/%e handle these, but avoid them in radix or in user displayers | |
1072 | ((and (floatp num) (isnan num)) "NaN") | |
1073 | ((<= 1.0e+INF num) "Inf") | |
1074 | ((<= num -1.0e+INF) "-Inf") | |
1075 | (calculator-output-radix | |
1076 | ;; print with radix -- for binary, convert the octal number | |
1077 | (let* ((fmt (if (eq calculator-output-radix 'hex) "%x" "%o")) | |
1078 | (str (if calculator-2s-complement num (abs num))) | |
1079 | (str (format fmt (calculator-truncate str))) | |
1080 | (bins '((?0 "000") (?1 "001") (?2 "010") (?3 "011") | |
1081 | (?4 "100") (?5 "101") (?6 "110") (?7 "111"))) | |
1082 | (str (if (not (eq calculator-output-radix 'bin)) str | |
1083 | (replace-regexp-in-string | |
1084 | "^0+\\(.\\)" "\\1" | |
1085 | (apply 'concat (mapcar (lambda (c) | |
1086 | (cadr (assq c bins))) | |
1087 | str))))) | |
1088 | (str (if (not calculator-radix-grouping-mode) str | |
1089 | (calculator-groupize-number | |
1090 | str calculator-radix-grouping-digits | |
1091 | calculator-radix-grouping-separator)))) | |
1092 | (upcase (if (or calculator-2s-complement (>= num 0)) str | |
1093 | (concat "-" str))))) | |
1094 | ((stringp calculator-displayer) (format calculator-displayer num)) | |
1095 | ((symbolp calculator-displayer) (funcall calculator-displayer num)) | |
1096 | ((eq 'std (car-safe calculator-displayer)) | |
1097 | (apply 'calculator-standard-displayer | |
1098 | num (cdr calculator-displayer))) | |
1099 | ((listp calculator-displayer) | |
1100 | (eval `(let ((num ',num)) ,calculator-displayer) t)) | |
1101 | ;; nil (or bad) displayer | |
1102 | (t (prin1-to-string num t)))) | |
d240a249 GM |
1103 | |
1104 | (defun calculator-update-display (&optional force) | |
1105 | "Update the display. | |
1106 | If optional argument FORCE is non-nil, don't use the cached string." | |
1107 | (set-buffer calculator-buffer) | |
1108 | ;; update calculator-stack-display | |
5335a8ce EB |
1109 | (when (or force (not (eq (car calculator-stack-display) |
1110 | calculator-stack))) | |
d240a249 GM |
1111 | (setq calculator-stack-display |
1112 | (cons calculator-stack | |
1113 | (if calculator-stack | |
1114 | (concat | |
4351784f GM |
1115 | (let ((calculator-displayer |
1116 | (if (and calculator-displayers | |
1117 | (= 1 (length calculator-stack))) | |
1118 | ;; customizable display for a single value | |
1119 | (caar calculator-displayers) | |
1120 | calculator-displayer))) | |
761d3eb3 | 1121 | (mapconcat 'calculator-number-to-string |
4351784f GM |
1122 | (reverse calculator-stack) |
1123 | " ")) | |
d240a249 GM |
1124 | " " |
1125 | (and calculator-display-fragile | |
1126 | calculator-saved-list | |
1127 | (= (car calculator-stack) | |
1128 | (nth calculator-saved-ptr | |
1129 | calculator-saved-list)) | |
1130 | (if (= 0 calculator-saved-ptr) | |
1131 | (format "[%s]" (length calculator-saved-list)) | |
1132 | (format "[%s/%s]" | |
1133 | (- (length calculator-saved-list) | |
1134 | calculator-saved-ptr) | |
1135 | (length calculator-saved-list))))) | |
1136 | "")))) | |
1137 | (let ((inhibit-read-only t)) | |
1138 | (erase-buffer) | |
5335a8ce | 1139 | (insert (calculator-get-display))) |
d240a249 | 1140 | (set-buffer-modified-p nil) |
5335a8ce EB |
1141 | (goto-char (if calculator-display-fragile |
1142 | (1+ (length calculator-prompt)) | |
1143 | (1- (point))))) | |
d240a249 | 1144 | |
cbb2dddb | 1145 | ;;;--------------------------------------------------------------------- |
25c269ef DL |
1146 | ;;; Stack computations |
1147 | ||
5335a8ce EB |
1148 | (defun calculator-reduce-stack-once (prec) |
1149 | "Worker for `calculator-reduce-stack'." | |
1150 | (cl-flet ((check (ar op) (and (listp op) | |
1151 | (<= prec (calculator-op-prec op)) | |
1152 | (= ar (calculator-op-arity op)))) | |
1153 | (call (op &rest args) (apply 'calculator-funcall | |
1154 | (nth 2 op) args))) | |
1155 | (pcase calculator-stack | |
1156 | ;; reduce "... ( x )" --> "... x" | |
1157 | (`((,_ \) . ,_) ,(and X (pred numberp)) (,_ \( . ,_) . ,rest) | |
1158 | (cons X rest)) | |
1159 | ;; reduce "... x op y" --> "... r", r is the result | |
1160 | (`(,(and Y (pred numberp)) | |
1161 | ,(and O (pred (check 2))) | |
1162 | ,(and X (pred numberp)) | |
1163 | . ,rest) | |
1164 | (cons (call O X Y) rest)) | |
1165 | ;; reduce "... op x" --> "... r" for prefix op | |
1166 | (`(,(and X (pred numberp)) ,(and O (pred (check -1))) . ,rest) | |
1167 | (cons (call O X) rest)) | |
1168 | ;; reduce "... x op" --> "... r" for postfix op | |
1169 | (`(,(and O (pred (check +1))) ,(and X (pred numberp)) . ,rest) | |
1170 | (cons (call O X) rest)) | |
1171 | ;; reduce "... op" --> "... r" for 0-ary op | |
1172 | (`(,(and O (pred (check 0))) . ,rest) | |
1173 | (cons (call O) rest)) | |
1174 | ;; reduce "... y x" --> "... x" | |
1175 | ;; (needed for 0-ary ops: replace current number with result) | |
1176 | (`(,(and X (pred numberp)) ,(and _Y (pred numberp)) . ,rest) | |
1177 | (cons X rest)) | |
1178 | (_ nil)))) ; nil = done | |
1179 | ||
d240a249 | 1180 | (defun calculator-reduce-stack (prec) |
5335a8ce EB |
1181 | "Reduce the stack using top operators as long as possible. |
1182 | PREC is a precedence -- reduce everything with higher precedence." | |
1183 | (let ((new nil)) | |
1184 | (while (setq new (calculator-reduce-stack-once prec)) | |
1185 | (setq calculator-stack new)))) | |
d240a249 | 1186 | |
25c269ef DL |
1187 | (defun calculator-funcall (f &optional X Y) |
1188 | "If F is a symbol, evaluate (F X Y). | |
1189 | Otherwise, it should be a list, evaluate it with X, Y bound to the | |
1190 | arguments." | |
1191 | ;; remember binary ops for calculator-repR/L | |
5335a8ce EB |
1192 | (when Y (setq calculator-last-opXY (list f X Y))) |
1193 | (if (symbolp f) | |
1194 | (cond ((and X Y) (funcall f X Y)) | |
1195 | (X (funcall f X)) | |
1196 | (t (funcall f))) | |
1197 | ;; f is an expression | |
1198 | (let ((TX (and X (calculator-truncate X))) | |
1199 | (TY (and Y (calculator-truncate Y))) | |
1200 | (DX (if (and X calculator-deg) (/ (* X pi) 180) X)) | |
cc43334a EB |
1201 | (L calculator-saved-list) |
1202 | (fF `(calculator-funcall ',f x y)) | |
1203 | (fD `(if calculator-deg (/ (* x 180) float-pi) x))) | |
1204 | (eval `(cl-flet ((F (&optional x y) ,fF) (D (x) ,fD)) | |
1205 | (let ((X ,X) (Y ,Y) (DX ,DX) (TX ,TX) (TY ,TY) (L ',L)) | |
1206 | ,f)) | |
1207 | t)))) | |
25c269ef | 1208 | |
cbb2dddb | 1209 | ;;;--------------------------------------------------------------------- |
25c269ef DL |
1210 | ;;; Input interaction |
1211 | ||
86f1e1ec GM |
1212 | (defun calculator-last-input (&optional keys) |
1213 | "Last char (or event or event sequence) that was read. | |
5335a8ce | 1214 | Use KEYS if given, otherwise use `this-command-keys'." |
86f1e1ec | 1215 | (let ((inp (or keys (this-command-keys)))) |
d240a249 GM |
1216 | (if (or (stringp inp) (not (arrayp inp))) |
1217 | inp | |
cc43334a | 1218 | ;; Translates kp-x to x and [tries to] create a string to lookup |
5335a8ce | 1219 | ;; operators; assume all symbols are translatable via |
7967f7d1 EB |
1220 | ;; `function-key-map'. This is needed because we have key |
1221 | ;; bindings for kp-* (which might be the wrong thing to do) so | |
1222 | ;; they don't get translated in `this-command-keys'. | |
5335a8ce | 1223 | (concat (mapcar (lambda (k) |
7967f7d1 | 1224 | (if (numberp k) k (error "??bad key?? (%S)" k))) |
5335a8ce | 1225 | (or (lookup-key function-key-map inp) inp)))))) |
d240a249 GM |
1226 | |
1227 | (defun calculator-clear-fragile (&optional op) | |
1228 | "Clear the fragile flag if it was set, then maybe reset all. | |
1229 | OP is the operator (if any) that caused this call." | |
5335a8ce EB |
1230 | (when (and calculator-display-fragile |
1231 | (or (not op) (memq (calculator-op-arity op) '(-1 0)))) | |
d240a249 | 1232 | ;; reset if last calc finished, and now get a num or prefix or 0-ary |
25c269ef | 1233 | ;; op |
d240a249 GM |
1234 | (calculator-reset)) |
1235 | (setq calculator-display-fragile nil)) | |
1236 | ||
1237 | (defun calculator-digit () | |
1238 | "Enter a single digit." | |
1239 | (interactive) | |
1240 | (let ((inp (aref (calculator-last-input) 0))) | |
5335a8ce EB |
1241 | (when (and (or calculator-display-fragile |
1242 | (not (numberp (car calculator-stack)))) | |
1243 | (<= inp (pcase calculator-input-radix | |
1244 | (`nil ?9) (`bin ?1) (`oct ?7) (_ 999)))) | |
1245 | (calculator-clear-fragile) | |
1246 | (setq calculator-curnum | |
1247 | (concat (if (equal calculator-curnum "0") "" | |
1248 | calculator-curnum) | |
1249 | (list (upcase inp)))) | |
1250 | (calculator-update-display)))) | |
d240a249 GM |
1251 | |
1252 | (defun calculator-decimal () | |
1253 | "Enter a decimal period." | |
1254 | (interactive) | |
5335a8ce EB |
1255 | (when (and (not calculator-input-radix) |
1256 | (or calculator-display-fragile | |
1257 | (not (numberp (car calculator-stack)))) | |
1258 | (not (and calculator-curnum | |
1259 | (string-match-p "[.eE]" calculator-curnum)))) | |
d240a249 | 1260 | ;; enter the period on the same condition as a digit, only if no |
25c269ef | 1261 | ;; period or exponent entered yet |
5335a8ce EB |
1262 | (calculator-clear-fragile) |
1263 | (setq calculator-curnum (concat (or calculator-curnum "0") ".")) | |
1264 | (calculator-update-display))) | |
d240a249 GM |
1265 | |
1266 | (defun calculator-exp () | |
1267 | "Enter an `E' exponent character, or a digit in hex input mode." | |
1268 | (interactive) | |
5335a8ce EB |
1269 | (cond |
1270 | (calculator-input-radix (calculator-digit)) | |
1271 | ((and (or calculator-display-fragile | |
1272 | (not (numberp (car calculator-stack)))) | |
1273 | (not (and calculator-curnum | |
1274 | (string-match-p "[eE]" calculator-curnum)))) | |
1275 | ;; same condition as above, also no E so far | |
1276 | (calculator-clear-fragile) | |
1277 | (setq calculator-curnum (concat (or calculator-curnum "1") "e")) | |
1278 | (calculator-update-display)))) | |
d240a249 | 1279 | |
86f1e1ec GM |
1280 | (defun calculator-op (&optional keys) |
1281 | "Enter an operator on the stack, doing all necessary reductions. | |
1282 | Optional string argument KEYS will force using it as the keys entered." | |
d240a249 | 1283 | (interactive) |
25c269ef DL |
1284 | (catch 'op-error |
1285 | (let* ((last-inp (calculator-last-input keys)) | |
1286 | (op (assoc last-inp calculator-operators))) | |
1287 | (calculator-clear-fragile op) | |
5335a8ce EB |
1288 | (calculator-push-curnum) |
1289 | (when (and (= 2 (calculator-op-arity op)) | |
1290 | (not (numberp (car calculator-stack)))) | |
1291 | ;; we have a binary operator but no number -- search for a | |
1292 | ;; prefix version | |
1293 | (setq op (assoc last-inp (cdr (memq op calculator-operators)))) | |
1294 | (unless (and op (= -1 (calculator-op-arity op))) | |
1295 | (calculator-message "Binary operator without a first operand") | |
1296 | (throw 'op-error nil))) | |
25c269ef DL |
1297 | (calculator-reduce-stack |
1298 | (cond ((eq (nth 1 op) '\() 10) | |
1299 | ((eq (nth 1 op) '\)) 0) | |
1300 | (t (calculator-op-prec op)))) | |
5335a8ce EB |
1301 | (when (let ((hasnum (numberp (car calculator-stack)))) |
1302 | (pcase (calculator-op-arity op) | |
1303 | (-1 hasnum) | |
1304 | ((or 1 2) (not hasnum)))) | |
1305 | (calculator-message "Incomplete expression") | |
1306 | (throw 'op-error nil)) | |
1307 | (push op calculator-stack) | |
25c269ef DL |
1308 | (calculator-reduce-stack (calculator-op-prec op)) |
1309 | (and (= (length calculator-stack) 1) | |
5335a8ce | 1310 | (numberp (car calculator-stack)) |
25c269ef DL |
1311 | ;; the display is fragile if it contains only one number |
1312 | (setq calculator-display-fragile t) | |
1313 | ;; add number to the saved-list | |
1314 | calculator-add-saved | |
1315 | (if (= 0 calculator-saved-ptr) | |
1316 | (setq calculator-saved-list | |
1317 | (cons (car calculator-stack) calculator-saved-list)) | |
1318 | (let ((p (nthcdr (1- calculator-saved-ptr) | |
1319 | calculator-saved-list))) | |
1320 | (setcdr p (cons (car calculator-stack) (cdr p)))))) | |
1321 | (calculator-update-display)))) | |
d240a249 GM |
1322 | |
1323 | (defun calculator-op-or-exp () | |
1324 | "Either enter an operator or a digit. | |
25c269ef | 1325 | Used with +/- for entering them as digits in numbers like 1e-3 (there is |
5335a8ce EB |
1326 | no need for negative numbers since these are handled by unary |
1327 | operators)." | |
d240a249 GM |
1328 | (interactive) |
1329 | (if (and (not calculator-display-fragile) | |
1330 | calculator-curnum | |
45fdb482 | 1331 | (string-match-p "[eE]$" calculator-curnum)) |
d240a249 GM |
1332 | (calculator-digit) |
1333 | (calculator-op))) | |
1334 | ||
cbb2dddb | 1335 | ;;;--------------------------------------------------------------------- |
25c269ef DL |
1336 | ;;; Input/output modes (not display) |
1337 | ||
d240a249 GM |
1338 | (defun calculator-dec/deg-mode () |
1339 | "Set decimal mode for display & input, if decimal, toggle deg mode." | |
1340 | (interactive) | |
5335a8ce | 1341 | (calculator-push-curnum) |
d240a249 GM |
1342 | (if (or calculator-input-radix calculator-output-radix) |
1343 | (progn (setq calculator-input-radix nil) | |
1344 | (setq calculator-output-radix nil)) | |
5335a8ce | 1345 | ;; already decimal -- toggle degrees mode |
d240a249 GM |
1346 | (setq calculator-deg (not calculator-deg))) |
1347 | (calculator-update-display t)) | |
1348 | ||
86f1e1ec GM |
1349 | (defun calculator-radix-mode (&optional keys) |
1350 | "Set input and display radix modes. | |
1351 | Optional string argument KEYS will force using it as the keys entered." | |
d240a249 | 1352 | (interactive) |
86f1e1ec GM |
1353 | (calculator-radix-input-mode keys) |
1354 | (calculator-radix-output-mode keys)) | |
d240a249 | 1355 | |
86f1e1ec GM |
1356 | (defun calculator-radix-input-mode (&optional keys) |
1357 | "Set input radix modes. | |
1358 | Optional string argument KEYS will force using it as the keys entered." | |
d240a249 | 1359 | (interactive) |
5335a8ce | 1360 | (calculator-push-curnum) |
d240a249 | 1361 | (setq calculator-input-radix |
86f1e1ec | 1362 | (let ((inp (calculator-last-input keys))) |
d240a249 GM |
1363 | (cdr (assq (upcase (aref inp (1- (length inp)))) |
1364 | calculator-char-radix)))) | |
1365 | (calculator-update-display)) | |
1366 | ||
86f1e1ec GM |
1367 | (defun calculator-radix-output-mode (&optional keys) |
1368 | "Set display radix modes. | |
1369 | Optional string argument KEYS will force using it as the keys entered." | |
d240a249 | 1370 | (interactive) |
5335a8ce | 1371 | (calculator-push-curnum) |
d240a249 | 1372 | (setq calculator-output-radix |
86f1e1ec | 1373 | (let ((inp (calculator-last-input keys))) |
d240a249 GM |
1374 | (cdr (assq (upcase (aref inp (1- (length inp)))) |
1375 | calculator-char-radix)))) | |
1376 | (calculator-update-display t)) | |
1377 | ||
cbb2dddb | 1378 | ;;;--------------------------------------------------------------------- |
25c269ef DL |
1379 | ;;; Saved values list |
1380 | ||
d240a249 GM |
1381 | (defun calculator-save-on-list () |
1382 | "Evaluate current expression, put result on the saved values list." | |
1383 | (interactive) | |
1384 | (let ((calculator-add-saved t)) ; marks the result to be added | |
1385 | (calculator-enter))) | |
1386 | ||
1387 | (defun calculator-clear-saved () | |
1388 | "Clear the list of saved values in `calculator-saved-list'." | |
1389 | (interactive) | |
1390 | (setq calculator-saved-list nil) | |
25c269ef | 1391 | (setq calculator-saved-ptr 0) |
d240a249 GM |
1392 | (calculator-update-display t)) |
1393 | ||
1394 | (defun calculator-saved-move (n) | |
1395 | "Go N elements up the list of saved values." | |
1396 | (interactive) | |
5335a8ce EB |
1397 | (when (and calculator-saved-list |
1398 | (or (null calculator-stack) calculator-display-fragile)) | |
1399 | (setq calculator-saved-ptr | |
1400 | (max (min (+ n calculator-saved-ptr) | |
1401 | (length calculator-saved-list)) | |
1402 | 0)) | |
1403 | (if (nth calculator-saved-ptr calculator-saved-list) | |
1404 | (setq calculator-stack (list (nth calculator-saved-ptr | |
1405 | calculator-saved-list)) | |
1406 | calculator-display-fragile t) | |
1407 | (calculator-reset)) | |
1408 | (calculator-update-display))) | |
d240a249 GM |
1409 | |
1410 | (defun calculator-saved-up () | |
1411 | "Go up the list of saved values." | |
1412 | (interactive) | |
1413 | (calculator-saved-move +1)) | |
1414 | ||
1415 | (defun calculator-saved-down () | |
1416 | "Go down the list of saved values." | |
1417 | (interactive) | |
1418 | (calculator-saved-move -1)) | |
1419 | ||
cbb2dddb | 1420 | ;;;--------------------------------------------------------------------- |
25c269ef DL |
1421 | ;;; Misc functions |
1422 | ||
d240a249 GM |
1423 | (defun calculator-open-paren () |
1424 | "Equivalents of `(' use this." | |
1425 | (interactive) | |
86f1e1ec | 1426 | (calculator-op "(")) |
d240a249 GM |
1427 | |
1428 | (defun calculator-close-paren () | |
1429 | "Equivalents of `)' use this." | |
1430 | (interactive) | |
86f1e1ec | 1431 | (calculator-op ")")) |
d240a249 GM |
1432 | |
1433 | (defun calculator-enter () | |
86f1e1ec | 1434 | "Evaluate current expression." |
d240a249 | 1435 | (interactive) |
86f1e1ec | 1436 | (calculator-op "=")) |
d240a249 GM |
1437 | |
1438 | (defun calculator-backspace () | |
1439 | "Backward delete a single digit or a stack element." | |
1440 | (interactive) | |
1441 | (if calculator-curnum | |
1442 | (setq calculator-curnum | |
1443 | (if (> (length calculator-curnum) 1) | |
1444 | (substring calculator-curnum | |
1445 | 0 (1- (length calculator-curnum))) | |
1446 | nil)) | |
1447 | (setq calculator-stack (cdr calculator-stack))) | |
1448 | (calculator-update-display)) | |
1449 | ||
1450 | (defun calculator-clear () | |
1451 | "Clear current number." | |
1452 | (interactive) | |
1453 | (setq calculator-curnum nil) | |
1454 | (cond | |
5335a8ce | 1455 | ;; if the current number is from the saved-list remove it |
d240a249 GM |
1456 | ((and calculator-display-fragile |
1457 | calculator-saved-list | |
1458 | (= (car calculator-stack) | |
1459 | (nth calculator-saved-ptr calculator-saved-list))) | |
1460 | (if (= 0 calculator-saved-ptr) | |
1461 | (setq calculator-saved-list (cdr calculator-saved-list)) | |
1462 | (let ((p (nthcdr (1- calculator-saved-ptr) | |
1463 | calculator-saved-list))) | |
5335a8ce | 1464 | (setcdr p (cddr p)) |
d240a249 GM |
1465 | (setq calculator-saved-ptr (1- calculator-saved-ptr)))) |
1466 | (if calculator-saved-list | |
1467 | (setq calculator-stack | |
1468 | (list (nth calculator-saved-ptr calculator-saved-list))) | |
1469 | (calculator-reset))) | |
1470 | ;; reset if fragile or double clear | |
1471 | ((or calculator-display-fragile (eq last-command this-command)) | |
1472 | (calculator-reset))) | |
1473 | (calculator-update-display)) | |
1474 | ||
1475 | (defun calculator-copy () | |
1476 | "Copy current number to the `kill-ring'." | |
1477 | (interactive) | |
4351784f GM |
1478 | (let ((calculator-displayer |
1479 | (or calculator-copy-displayer calculator-displayer)) | |
1480 | (calculator-displayers | |
1481 | (if calculator-copy-displayer nil calculator-displayers))) | |
1482 | (calculator-enter) | |
1214bb6e | 1483 | ;; remove trailing spaces and an index |
4351784f | 1484 | (let ((s (cdr calculator-stack-display))) |
5335a8ce EB |
1485 | (when s |
1486 | (kill-new (replace-regexp-in-string | |
1487 | "^\\([^ ]+\\) *\\(\\[[0-9/]+\\]\\)? *$" "\\1" s)))))) | |
d240a249 GM |
1488 | |
1489 | (defun calculator-set-register (reg) | |
1490 | "Set a register value for REG." | |
5335a8ce EB |
1491 | ;; FIXME: this should use `register-read-with-preview', but it uses |
1492 | ;; calculator-registers rather than `register-alist'. (Maybe | |
1493 | ;; dynamically rebinding it will get blessed?) Also in to | |
1494 | ;; `calculator-get-register'. | |
d240a249 GM |
1495 | (interactive "cRegister to store into: ") |
1496 | (let* ((as (assq reg calculator-registers)) | |
1497 | (val (progn (calculator-enter) (car calculator-stack)))) | |
1498 | (if as | |
1499 | (setcdr as val) | |
1500 | (setq calculator-registers | |
1501 | (cons (cons reg val) calculator-registers))) | |
761d3eb3 | 1502 | (calculator-message "[%c] := %S" reg val))) |
d240a249 GM |
1503 | |
1504 | (defun calculator-put-value (val) | |
1505 | "Paste VAL as if entered. | |
1506 | Used by `calculator-paste' and `get-register'." | |
5335a8ce EB |
1507 | (when (and (numberp val) |
1508 | ;; (not calculator-curnum) | |
1509 | (or calculator-display-fragile | |
1510 | (not (numberp (car calculator-stack))))) | |
1511 | (calculator-clear-fragile) | |
1512 | (setq calculator-curnum (let ((calculator-displayer "%S")) | |
1513 | (calculator-number-to-string val))) | |
1514 | (calculator-update-display))) | |
d240a249 GM |
1515 | |
1516 | (defun calculator-paste () | |
1517 | "Paste a value from the `kill-ring'." | |
1518 | (interactive) | |
1519 | (calculator-put-value | |
761d3eb3 RS |
1520 | (let ((str (replace-regexp-in-string |
1521 | "^ *\\(.+[^ ]\\) *$" "\\1" (current-kill 0)))) | |
1522 | (and (not calculator-input-radix) | |
1523 | calculator-paste-decimals | |
cbb2dddb GM |
1524 | (string-match "\\([0-9]+\\)\\(\\.[0-9]+\\)?\\(e[0-9]+\\)?" |
1525 | str) | |
1526 | (or (match-string 1 str) | |
1527 | (match-string 2 str) | |
1528 | (match-string 3 str)) | |
761d3eb3 | 1529 | (setq str (concat (or (match-string 1 str) "0") |
cbb2dddb | 1530 | (or (match-string 2 str) ".0") |
761d3eb3 | 1531 | (or (match-string 3 str) "")))) |
45fdb482 | 1532 | (ignore-errors (calculator-string-to-number str))))) |
d240a249 GM |
1533 | |
1534 | (defun calculator-get-register (reg) | |
1535 | "Get a value from a register REG." | |
1536 | (interactive "cRegister to get value from: ") | |
1537 | (calculator-put-value (cdr (assq reg calculator-registers)))) | |
1538 | ||
f440830d GM |
1539 | (declare-function electric-describe-mode "ehelp" ()) |
1540 | ||
d240a249 GM |
1541 | (defun calculator-help () |
1542 | ;; this is used as the quick reference screen you get with `h' | |
1543 | "Quick reference: | |
1544 | * numbers/operators/parens/./e - enter expressions | |
1545 | + - * / \\(div) %(rem) _(-X,postfix) ;(1/X,postfix) ^(exp) L(og) | |
1546 | Q(sqrt) !(fact) S(in) C(os) T(an) |(or) #(xor) &(and) ~(not) | |
1547 | * >/< repeats last binary operation with its 2nd (1st) arg as postfix op | |
25c269ef DL |
1548 | * I inverses next trig function * '/\"/{} - display/display args |
1549 | * D - switch to all-decimal, or toggle deg/rad mode | |
d240a249 GM |
1550 | * B/O/H/X - binary/octal/hex mode for i/o (X is a shortcut for H) |
1551 | * i/o - prefix for d/b/o/x - set only input/output modes | |
1552 | * enter/= - evaluate current expr. * s/g - set/get a register | |
1553 | * space - evaluate & save on list * l/v - list total/average | |
1554 | * up/down/C-p/C-n - browse saved * C-delete - clear all saved | |
86f1e1ec | 1555 | * C-insert - copy whole expr. * C-return - evaluate, copy, exit |
d240a249 GM |
1556 | * insert - paste a number * backspace- delete backwards |
1557 | * delete - clear argument or list value or whole expression (twice) | |
1558 | * escape/q - exit." | |
1559 | (interactive) | |
1560 | (if (eq last-command 'calculator-help) | |
1561 | (let ((mode-name "Calculator") | |
1562 | (major-mode 'calculator-mode) | |
1563 | (g-map (current-global-map)) | |
1564 | (win (selected-window))) | |
1565 | (require 'ehelp) | |
5335a8ce | 1566 | (when calculator-electric-mode |
d240a249 | 1567 | (use-global-map calculator-saved-global-map)) |
d240a249 | 1568 | (if calculator-electric-mode |
5335a8ce EB |
1569 | (electric-describe-mode) |
1570 | (describe-mode)) | |
1571 | (when calculator-electric-mode (use-global-map g-map)) | |
1572 | (select-window win) | |
d240a249 GM |
1573 | (message nil)) |
1574 | (let ((one (one-window-p t)) | |
1575 | (win (selected-window)) | |
1576 | (help-buf (get-buffer-create "*Help*"))) | |
1577 | (save-window-excursion | |
1578 | (with-output-to-temp-buffer "*Help*" | |
1579 | (princ (documentation 'calculator-help))) | |
5335a8ce EB |
1580 | (when one (shrink-window-if-larger-than-buffer |
1581 | (get-buffer-window help-buf))) | |
1582 | (message "`%s' again for more help, %s." | |
1583 | (calculator-last-input) | |
1584 | "any other key continues normally") | |
d240a249 GM |
1585 | (select-window win) |
1586 | (sit-for 360)) | |
1587 | (select-window win)))) | |
1588 | ||
1589 | (defun calculator-quit () | |
1590 | "Quit calculator." | |
1591 | (interactive) | |
1592 | (set-buffer calculator-buffer) | |
1593 | (let ((inhibit-read-only t)) (erase-buffer)) | |
45fdb482 JB |
1594 | (unless calculator-electric-mode |
1595 | (ignore-errors | |
1596 | (while (get-buffer-window calculator-buffer) | |
5335a8ce EB |
1597 | (delete-window (get-buffer-window calculator-buffer))))) |
1598 | (kill-buffer calculator-buffer) | |
d240a249 | 1599 | (message "Calculator done.") |
5335a8ce EB |
1600 | (if calculator-electric-mode |
1601 | (throw 'calculator-done nil) ; will kill the buffer | |
1602 | (setq calculator-buffer nil))) | |
d240a249 GM |
1603 | |
1604 | (defun calculator-save-and-quit () | |
1605 | "Quit the calculator, saving the result on the `kill-ring'." | |
1606 | (interactive) | |
1607 | (calculator-enter) | |
1608 | (calculator-copy) | |
1609 | (calculator-quit)) | |
1610 | ||
d240a249 | 1611 | (defun calculator-repR (x) |
a1ff7705 | 1612 | "Repeat the last binary operation with its second argument and X. |
d240a249 GM |
1613 | To use this, apply a binary operator (evaluate it), then call this." |
1614 | (if calculator-last-opXY | |
1615 | ;; avoid rebinding calculator-last-opXY | |
1616 | (let ((calculator-last-opXY calculator-last-opXY)) | |
1617 | (calculator-funcall | |
1618 | (car calculator-last-opXY) x (nth 2 calculator-last-opXY))) | |
1619 | x)) | |
1620 | ||
1621 | (defun calculator-repL (x) | |
a1ff7705 | 1622 | "Repeat the last binary operation with its first argument and X. |
d240a249 GM |
1623 | To use this, apply a binary operator (evaluate it), then call this." |
1624 | (if calculator-last-opXY | |
1625 | ;; avoid rebinding calculator-last-opXY | |
1626 | (let ((calculator-last-opXY calculator-last-opXY)) | |
1627 | (calculator-funcall | |
1628 | (car calculator-last-opXY) (nth 1 calculator-last-opXY) x)) | |
1629 | x)) | |
1630 | ||
f50347a9 JB |
1631 | (defun calculator-expt (x y) |
1632 | "Compute X^Y, dealing with errors appropriately." | |
45fdb482 | 1633 | (condition-case nil |
f50347a9 JB |
1634 | (expt x y) |
1635 | (domain-error 0.0e+NaN) | |
1636 | (range-error | |
5335a8ce EB |
1637 | (cond ((and (< x 1.0) (> x -1.0)) |
1638 | ;; For small x, the range error comes from large y. | |
1639 | 0.0) | |
1640 | ((and (> x 0.0) (< y 0.0)) | |
1641 | ;; For large positive x and negative y, the range error | |
1642 | ;; comes from large negative y. | |
1643 | 0.0) | |
1644 | ((and (> x 0.0) (> y 0.0)) | |
1645 | ;; For large positive x and positive y, the range error | |
1646 | ;; comes from large y. | |
1647 | 1.0e+INF) | |
1648 | ;; For the rest, x must be large and negative. | |
1649 | ;; The range errors come from large integer y. | |
1650 | ((< y 0.0) | |
1651 | 0.0) | |
1652 | ((eq (logand (truncate y) 1) 1) ; expansion of cl `oddp' | |
1653 | ;; If y is odd | |
1654 | -1.0e+INF) | |
1655 | (t | |
1656 | ;; | |
1657 | 1.0e+INF))) | |
f50347a9 JB |
1658 | (error 0.0e+NaN))) |
1659 | ||
d240a249 GM |
1660 | (defun calculator-fact (x) |
1661 | "Simple factorial of X." | |
5335a8ce EB |
1662 | (cond ((>= x 1.0e+INF) x) |
1663 | ((or (and (floatp x) (isnan x)) (< x 0)) 0.0e+NaN) | |
1664 | ((>= (calculator-expt (/ x 3.0) x) 1.0e+INF) 1.0e+INF) | |
1665 | (t (let ((x (truncate x)) (r 1.0)) | |
1666 | (while (> x 0) (setq r (* r x) x (1- x))) | |
1667 | r)))) | |
d240a249 GM |
1668 | |
1669 | (defun calculator-truncate (n) | |
1670 | "Truncate N, return 0 in case of overflow." | |
5335a8ce | 1671 | (condition-case nil (truncate n) (range-error 0))) |
d240a249 GM |
1672 | |
1673 | ||
1674 | (provide 'calculator) | |
1675 | ||
1676 | ;;; calculator.el ends here |