| | 1 | ;;; calculator.el --- a [not so] simple calculator for Emacs -*- lexical-binding: t -*- |
| | 2 | |
| | 3 | ;; Copyright (C) 1998, 2000-2014 Free Software Foundation, Inc. |
| | 4 | |
| | 5 | ;; Author: Eli Barzilay <eli@barzilay.org> |
| | 6 | ;; Keywords: tools, convenience |
| | 7 | |
| | 8 | ;; This file is part of GNU Emacs. |
| | 9 | |
| | 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. |
| | 14 | |
| | 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. |
| | 19 | |
| | 20 | ;; You should have received a copy of the GNU General Public License |
| | 21 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
| | 22 | |
| | 23 | ;;;===================================================================== |
| | 24 | ;;; Commentary: |
| | 25 | ;; |
| | 26 | ;; A calculator for Emacs. |
| | 27 | ;; Why should you reach for your mouse to get xcalc (calc.exe, gcalc or |
| | 28 | ;; whatever), when you have Emacs running already? |
| | 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" |
| | 33 | ;; "Run the Emacs calculator." t) |
| | 34 | ;; (global-set-key [(control return)] 'calculator) |
| | 35 | ;; |
| | 36 | ;; Written by Eli Barzilay: Maze is Life! eli@barzilay.org |
| | 37 | ;; http://www.barzilay.org/ |
| | 38 | ;; |
| | 39 | ;; For latest version, check |
| | 40 | ;; http://www.barzilay.org/misc/calculator.el |
| | 41 | ;; |
| | 42 | |
| | 43 | ;;; History: |
| | 44 | ;; I hate history. |
| | 45 | |
| | 46 | ;;;===================================================================== |
| | 47 | ;;; Customization: |
| | 48 | |
| | 49 | (defgroup calculator nil |
| | 50 | "Simple Emacs calculator." |
| | 51 | :prefix "calculator" |
| | 52 | :version "21.1" |
| | 53 | :group 'tools |
| | 54 | :group 'applications) |
| | 55 | |
| | 56 | (defcustom calculator-electric-mode nil |
| | 57 | "Run `calculator' electrically, in the echo area. |
| | 58 | Electric mode saves some place but changes the way you interact with the |
| | 59 | calculator." |
| | 60 | :type 'boolean |
| | 61 | :group 'calculator) |
| | 62 | |
| | 63 | (defcustom calculator-use-menu t |
| | 64 | "Make `calculator' create a menu. |
| | 65 | Note that this requires easymenu. Must be set before loading." |
| | 66 | :type 'boolean |
| | 67 | :group 'calculator) |
| | 68 | |
| | 69 | (defcustom calculator-bind-escape nil |
| | 70 | "If non-nil, set escape to exit the calculator." |
| | 71 | :type 'boolean |
| | 72 | :group 'calculator) |
| | 73 | |
| | 74 | (defcustom calculator-unary-style 'postfix |
| | 75 | "Value is either 'prefix or 'postfix. |
| | 76 | This determines the default behavior of unary operators." |
| | 77 | :type '(choice (const prefix) (const postfix)) |
| | 78 | :group 'calculator) |
| | 79 | |
| | 80 | (defcustom calculator-prompt "Calc=%s> " |
| | 81 | "The prompt used by the Emacs calculator. |
| | 82 | It should contain a \"%s\" somewhere that will indicate the i/o radices; |
| | 83 | this will be a two-character string as described in the documentation |
| | 84 | for `calculator-mode'." |
| | 85 | :type 'string |
| | 86 | :group 'calculator) |
| | 87 | |
| | 88 | (defcustom calculator-number-digits 3 |
| | 89 | "The calculator's number of digits used for standard display. |
| | 90 | Used by the `calculator-standard-display' function - it will use the |
| | 91 | format string \"%.NC\" where this number is N and C is a character given |
| | 92 | at runtime." |
| | 93 | :type 'integer |
| | 94 | :group 'calculator) |
| | 95 | |
| | 96 | (defcustom calculator-radix-grouping-mode t |
| | 97 | "Use digit grouping in radix output mode. |
| | 98 | If this is set, chunks of `calculator-radix-grouping-digits' characters |
| | 99 | will be separated by `calculator-radix-grouping-separator' when in radix |
| | 100 | output mode is active (determined by `calculator-output-radix')." |
| | 101 | :type 'boolean |
| | 102 | :group 'calculator) |
| | 103 | |
| | 104 | (defcustom calculator-radix-grouping-digits 4 |
| | 105 | "The number of digits used for grouping display in radix modes. |
| | 106 | See `calculator-radix-grouping-mode'." |
| | 107 | :type 'integer |
| | 108 | :group 'calculator) |
| | 109 | |
| | 110 | (defcustom calculator-radix-grouping-separator "'" |
| | 111 | "The separator used in radix grouping display. |
| | 112 | See `calculator-radix-grouping-mode'." |
| | 113 | :type 'string |
| | 114 | :group 'calculator) |
| | 115 | |
| | 116 | (defcustom calculator-remove-zeros t |
| | 117 | "Non-nil value means delete all redundant zero decimal digits. |
| | 118 | If this value is not t, and not nil, redundant zeros are removed except |
| | 119 | for one and if it is nil, nothing is removed. |
| | 120 | Used by the `calculator-remove-zeros' function." |
| | 121 | :type '(choice (const t) (const leave-decimal) (const nil)) |
| | 122 | :group 'calculator) |
| | 123 | |
| | 124 | (defcustom calculator-displayer '(std ?n) |
| | 125 | "A displayer specification for numerical values. |
| | 126 | This is the displayer used to show all numbers in an expression. Result |
| | 127 | values will be displayed according to the first element of |
| | 128 | `calculator-displayers'. |
| | 129 | |
| | 130 | The displayer is a symbol, a string or an expression. A symbol should |
| | 131 | be the name of a one-argument function, a string is used with a single |
| | 132 | argument and an expression will be evaluated with the variable `num' |
| | 133 | bound to whatever should be displayed. If it is a function symbol, it |
| | 134 | should be able to handle special symbol arguments, currently `left' and |
| | 135 | `right' which will be sent by special keys to modify display parameters |
| | 136 | associated with the displayer function (for example to change the number |
| | 137 | of digits displayed). |
| | 138 | |
| | 139 | An exception to the above is the case of the list (std C) where C is a |
| | 140 | character, in this case the `calculator-standard-displayer' function |
| | 141 | will be used with this character for a format string." |
| | 142 | :type '(choice (function) (string) (list (const std) character) (sexp)) |
| | 143 | :group 'calculator) |
| | 144 | |
| | 145 | (defcustom calculator-displayers |
| | 146 | '(((std ?n) "Standard display, decimal point or scientific") |
| | 147 | (calculator-eng-display "Eng display") |
| | 148 | ((std ?f) "Standard display, decimal point") |
| | 149 | ((std ?e) "Standard display, scientific") |
| | 150 | ("%S" "Emacs printer")) |
| | 151 | "A list of displayers. |
| | 152 | Each element is a list of a displayer and a description string. The |
| | 153 | first element is the one which is currently used, this is for the display |
| | 154 | of result values not values in expressions. A displayer specification |
| | 155 | is the same as the values that can be stored in `calculator-displayer'. |
| | 156 | |
| | 157 | `calculator-rotate-displayer' rotates this list." |
| | 158 | :type 'sexp |
| | 159 | :group 'calculator) |
| | 160 | |
| | 161 | (defcustom calculator-paste-decimals t |
| | 162 | "If non-nil, convert pasted integers so they have a decimal point. |
| | 163 | This makes it possible to paste big integers since they will be read as |
| | 164 | floats, otherwise the Emacs reader will fail on them." |
| | 165 | :type 'boolean |
| | 166 | :group 'calculator) |
| | 167 | |
| | 168 | (defcustom calculator-copy-displayer nil |
| | 169 | "If non-nil, this is any value that can be used for |
| | 170 | `calculator-displayer', to format a string before copying it with |
| | 171 | `calculator-copy'. If nil, then `calculator-displayer's normal value is |
| | 172 | used." |
| | 173 | :type 'boolean |
| | 174 | :group 'calculator) |
| | 175 | |
| | 176 | (defcustom calculator-2s-complement nil |
| | 177 | "If non-nil, show negative numbers in 2s complement in radix modes. |
| | 178 | Otherwise show as a negative number." |
| | 179 | :type 'boolean |
| | 180 | :group 'calculator) |
| | 181 | |
| | 182 | (defcustom calculator-mode-hook nil |
| | 183 | "List of hook functions for `calculator-mode' to run. |
| | 184 | Note: if `calculator-electric-mode' is on, then this hook will get |
| | 185 | activated in the minibuffer - in that case it should not do much more |
| | 186 | than local key settings and other effects that will change things |
| | 187 | outside the scope of calculator related code." |
| | 188 | :type 'hook |
| | 189 | :group 'calculator) |
| | 190 | |
| | 191 | (defcustom calculator-user-registers nil |
| | 192 | "An association list of user-defined register bindings. |
| | 193 | Each element in this list is a list of a character and a number that |
| | 194 | will be stored in that character's register. |
| | 195 | |
| | 196 | For example, use this to define the golden ratio number: |
| | 197 | (setq calculator-user-registers '((?g . 1.61803398875))) |
| | 198 | before you load calculator." |
| | 199 | :type '(repeat (cons character number)) |
| | 200 | :set (lambda (_ val) |
| | 201 | (and (boundp 'calculator-registers) |
| | 202 | (setq calculator-registers |
| | 203 | (append val calculator-registers))) |
| | 204 | (setq calculator-user-registers val)) |
| | 205 | :group 'calculator) |
| | 206 | |
| | 207 | (defcustom calculator-user-operators nil |
| | 208 | "A list of additional operators. |
| | 209 | This is a list in the same format as specified in the documentation for |
| | 210 | `calculator-operators', that you can use to bind additional calculator |
| | 211 | operators. It is probably not a good idea to modify this value with |
| | 212 | `customize' since it is too complex... |
| | 213 | |
| | 214 | Examples: |
| | 215 | |
| | 216 | * A very simple one, adding a postfix \"x-to-y\" conversion keys, using |
| | 217 | t as a prefix key: |
| | 218 | |
| | 219 | (setq calculator-user-operators |
| | 220 | '((\"tf\" cl-to-fr (+ 32 (/ (* X 9) 5)) 1) |
| | 221 | (\"tc\" fr-to-cl (/ (* (- X 32) 5) 9) 1) |
| | 222 | (\"tp\" kg-to-lb (/ X 0.453592) 1) |
| | 223 | (\"tk\" lb-to-kg (* X 0.453592) 1) |
| | 224 | (\"tF\" mt-to-ft (/ X 0.3048) 1) |
| | 225 | (\"tM\" ft-to-mt (* X 0.3048) 1))) |
| | 226 | |
| | 227 | * Using a function-like form is very simple, X for an argument (Y the |
| | 228 | second in case of a binary operator), TX is a truncated version of X |
| | 229 | and F does a recursive call, Here is a [very inefficient] Fibonacci |
| | 230 | number calculation: |
| | 231 | |
| | 232 | (add-to-list 'calculator-user-operators |
| | 233 | '(\"F\" fib (if (<= TX 1) |
| | 234 | 1 |
| | 235 | (+ (F (- TX 1)) (F (- TX 2)))) 0)) |
| | 236 | |
| | 237 | Note that this will be either postfix or prefix, according to |
| | 238 | `calculator-unary-style'." |
| | 239 | :type '(repeat (list string symbol sexp integer integer)) |
| | 240 | :group 'calculator) |
| | 241 | |
| | 242 | ;;;===================================================================== |
| | 243 | ;;; Code: |
| | 244 | |
| | 245 | (eval-when-compile (require 'cl-lib)) |
| | 246 | |
| | 247 | ;;;--------------------------------------------------------------------- |
| | 248 | ;;; Variables |
| | 249 | |
| | 250 | (defvar calculator-initial-operators |
| | 251 | '(;; "+"/"-" have keybindings of themselves, not calculator-ops |
| | 252 | ("=" = identity 1 -1) |
| | 253 | (nobind "+" + + 2 4) |
| | 254 | (nobind "-" - - 2 4) |
| | 255 | (nobind "+" + + -1 9) |
| | 256 | (nobind "-" - - -1 9) |
| | 257 | ("(" \( identity -1 -1) |
| | 258 | (")" \) identity +1 10) |
| | 259 | ;; normal keys |
| | 260 | ("|" or (logior TX TY) 2 2) |
| | 261 | ("#" xor (logxor TX TY) 2 2) |
| | 262 | ("&" and (logand TX TY) 2 3) |
| | 263 | ("*" * * 2 5) |
| | 264 | ("/" / / 2 5) |
| | 265 | ("\\" div (/ TX TY) 2 5) |
| | 266 | ("%" rem (% TX TY) 2 5) |
| | 267 | ("L" log log 2 6) |
| | 268 | ("S" sin (sin DX) x 6) |
| | 269 | ("C" cos (cos DX) x 6) |
| | 270 | ("T" tan (tan DX) x 6) |
| | 271 | ("IS" asin (D (asin X)) x 6) |
| | 272 | ("IC" acos (D (acos X)) x 6) |
| | 273 | ("IT" atan (D (atan X)) x 6) |
| | 274 | ("Q" sqrt sqrt x 7) |
| | 275 | ("^" ^ calculator-expt 2 7) |
| | 276 | ("!" ! calculator-fact x 7) |
| | 277 | (";" 1/ (/ 1 X) 1 7) |
| | 278 | ("_" - - 1 8) |
| | 279 | ("~" ~ (lognot TX) x 8) |
| | 280 | (">" repR calculator-repR 1 8) |
| | 281 | ("<" repL calculator-repL 1 8) |
| | 282 | ("v" avg (/ (apply '+ L) (length L)) 0 8) |
| | 283 | ("l" tot (apply '+ L) 0 8) |
| | 284 | ) |
| | 285 | "A list of initial operators. |
| | 286 | This is a list in the same format as `calculator-operators'. Whenever |
| | 287 | `calculator' starts, it looks at the value of this variable, and if it |
| | 288 | is not empty, its contents is prepended to `calculator-operators' and |
| | 289 | the appropriate key bindings are made. |
| | 290 | |
| | 291 | This variable is then reset to nil. Don't use this if you want to add |
| | 292 | user-defined operators, use `calculator-user-operators' instead.") |
| | 293 | |
| | 294 | (defvar calculator-operators nil |
| | 295 | "The calculator operators, each a list with: |
| | 296 | |
| | 297 | 1. The key that is bound to for this operation (usually a string); |
| | 298 | |
| | 299 | 2. The displayed symbol for this function; |
| | 300 | |
| | 301 | 3. The function symbol, or a form that uses the variables `X' and `Y', |
| | 302 | (if it is a binary operator), `TX' and `TY' (truncated integer |
| | 303 | versions), `DX' (converted to radians if degrees mode is on), `D' |
| | 304 | (function for converting radians to degrees if deg mode is on), `L' |
| | 305 | (list of saved values), `F' (function for recursive iteration calls) |
| | 306 | and evaluates to the function value - these variables are capital; |
| | 307 | |
| | 308 | 4. The function's arity, optional, one of: 2 => binary, -1 => prefix |
| | 309 | unary, +1 => postfix unary, 0 => a 0-arg operator func, non-number => |
| | 310 | postfix/prefix as determined by `calculator-unary-style' (the |
| | 311 | default); |
| | 312 | |
| | 313 | 5. The function's precedence - should be in the range of 1 (lowest) to |
| | 314 | 9 (highest) (optional, defaults to 1); |
| | 315 | |
| | 316 | It it possible have a unary prefix version of a binary operator if it |
| | 317 | comes later in this list. If the list begins with the symbol 'nobind, |
| | 318 | then no key binding will take place - this is only useful for predefined |
| | 319 | keys. |
| | 320 | |
| | 321 | Use `calculator-user-operators' to add operators to this list, see its |
| | 322 | documentation for an example.") |
| | 323 | |
| | 324 | (defvar calculator-stack nil |
| | 325 | "Stack contents - operations and operands.") |
| | 326 | |
| | 327 | (defvar calculator-curnum nil |
| | 328 | "Current number being entered (as a string).") |
| | 329 | |
| | 330 | (defvar calculator-stack-display nil |
| | 331 | "Cons of the stack and its string representation.") |
| | 332 | |
| | 333 | (defvar calculator-char-radix |
| | 334 | '((?D . nil) (?B . bin) (?O . oct) (?H . hex) (?X . hex)) |
| | 335 | "A table to convert input characters to corresponding radix symbols.") |
| | 336 | |
| | 337 | (defvar calculator-output-radix nil |
| | 338 | "The mode for display, one of: nil (decimal), 'bin, 'oct or 'hex.") |
| | 339 | |
| | 340 | (defvar calculator-input-radix nil |
| | 341 | "The mode for input, one of: nil (decimal), 'bin, 'oct or 'hex.") |
| | 342 | |
| | 343 | (defvar calculator-deg nil |
| | 344 | "Non-nil if trig functions operate on degrees instead of radians.") |
| | 345 | |
| | 346 | (defvar calculator-saved-list nil |
| | 347 | "A list of saved values collected.") |
| | 348 | |
| | 349 | (defvar calculator-saved-ptr 0 |
| | 350 | "The pointer to the current saved number.") |
| | 351 | |
| | 352 | (defvar calculator-add-saved nil |
| | 353 | "Bound to t when a value should be added to the saved-list.") |
| | 354 | |
| | 355 | (defvar calculator-display-fragile nil |
| | 356 | "When non-nil, we see something that the next digit should replace.") |
| | 357 | |
| | 358 | (defvar calculator-buffer nil |
| | 359 | "The current calculator buffer.") |
| | 360 | |
| | 361 | (defvar calculator-eng-extra nil |
| | 362 | "Internal value used by `calculator-eng-display'.") |
| | 363 | |
| | 364 | (defvar calculator-eng-tmp-show nil |
| | 365 | "Internal value used by `calculator-eng-display'.") |
| | 366 | |
| | 367 | (defvar calculator-last-opXY nil |
| | 368 | "The last binary operation and its arguments. |
| | 369 | Used for repeating operations in calculator-repR/L.") |
| | 370 | |
| | 371 | (defvar calculator-registers ; use user-bindings first |
| | 372 | (append calculator-user-registers |
| | 373 | (list (cons ?e float-e) (cons ?p float-pi))) |
| | 374 | "The association list of calculator register values.") |
| | 375 | |
| | 376 | (defvar calculator-saved-global-map nil |
| | 377 | "Saved global key map.") |
| | 378 | |
| | 379 | (defvar calculator-restart-other-mode nil |
| | 380 | "Used to hack restarting with the electric mode changed.") |
| | 381 | |
| | 382 | ;;;--------------------------------------------------------------------- |
| | 383 | ;;; Key bindings |
| | 384 | |
| | 385 | (defvar calculator-mode-map |
| | 386 | (let ((map (make-sparse-keymap))) |
| | 387 | (suppress-keymap map t) |
| | 388 | (define-key map "i" nil) |
| | 389 | (define-key map "o" nil) |
| | 390 | (let ((p |
| | 391 | '((calculator-open-paren "[") |
| | 392 | (calculator-close-paren "]") |
| | 393 | (calculator-op-or-exp "+" "-" [kp-add] [kp-subtract]) |
| | 394 | (calculator-digit "0" "1" "2" "3" "4" "5" "6" "7" "8" |
| | 395 | "9" "a" "b" "c" "d" "f" |
| | 396 | [kp-0] [kp-1] [kp-2] [kp-3] [kp-4] |
| | 397 | [kp-5] [kp-6] [kp-7] [kp-8] [kp-9]) |
| | 398 | (calculator-op [kp-divide] [kp-multiply]) |
| | 399 | (calculator-decimal "." [kp-decimal]) |
| | 400 | (calculator-exp "e") |
| | 401 | (calculator-dec/deg-mode "D") |
| | 402 | (calculator-set-register "s") |
| | 403 | (calculator-get-register "g") |
| | 404 | (calculator-radix-mode "H" "X" "O" "B") |
| | 405 | (calculator-radix-input-mode "id" "ih" "ix" "io" "ib" |
| | 406 | "iD" "iH" "iX" "iO" "iB") |
| | 407 | (calculator-radix-output-mode "od" "oh" "ox" "oo" "ob" |
| | 408 | "oD" "oH" "oX" "oO" "oB") |
| | 409 | (calculator-rotate-displayer "'") |
| | 410 | (calculator-rotate-displayer-back "\"") |
| | 411 | (calculator-displayer-prev "{") |
| | 412 | (calculator-displayer-next "}") |
| | 413 | (calculator-saved-up [up] [?\C-p]) |
| | 414 | (calculator-saved-down [down] [?\C-n]) |
| | 415 | (calculator-quit "q" [?\C-g]) |
| | 416 | (calculator-enter [enter] [linefeed] [kp-enter] |
| | 417 | [return] [?\r] [?\n]) |
| | 418 | (calculator-save-on-list " " [space]) |
| | 419 | (calculator-clear-saved [?\C-c] [(control delete)]) |
| | 420 | (calculator-save-and-quit [(control return)] |
| | 421 | [(control kp-enter)]) |
| | 422 | (calculator-paste [insert] [(shift insert)] |
| | 423 | [paste] [mouse-2] [?\C-y]) |
| | 424 | (calculator-clear [delete] [?\C-?] [?\C-d]) |
| | 425 | (calculator-help [?h] [??] [f1] [help]) |
| | 426 | (calculator-copy [(control insert)] [copy]) |
| | 427 | (calculator-backspace [backspace]) |
| | 428 | ))) |
| | 429 | (while p |
| | 430 | ;; reverse the keys so first defs come last - makes the more |
| | 431 | ;; sensible bindings visible in the menu |
| | 432 | (let ((func (car (car p))) (keys (reverse (cdr (car p))))) |
| | 433 | (while keys |
| | 434 | (define-key map (car keys) func) |
| | 435 | (setq keys (cdr keys)))) |
| | 436 | (setq p (cdr p)))) |
| | 437 | (if calculator-bind-escape |
| | 438 | (progn (define-key map [?\e] 'calculator-quit) |
| | 439 | (define-key map [escape] 'calculator-quit)) |
| | 440 | (define-key map [?\e ?\e ?\e] 'calculator-quit)) |
| | 441 | ;; make C-h work in text-mode |
| | 442 | (or window-system (define-key map [?\C-h] 'calculator-backspace)) |
| | 443 | ;; set up a menu |
| | 444 | (if (and calculator-use-menu (not (boundp 'calculator-menu))) |
| | 445 | (let ((radix-selectors |
| | 446 | (mapcar (lambda (x) |
| | 447 | `([,(nth 0 x) |
| | 448 | (calculator-radix-mode ,(nth 2 x)) |
| | 449 | :style radio |
| | 450 | :keys ,(nth 2 x) |
| | 451 | :selected |
| | 452 | (and |
| | 453 | (eq calculator-input-radix ',(nth 1 x)) |
| | 454 | (eq calculator-output-radix ',(nth 1 x)))] |
| | 455 | [,(concat (nth 0 x) " Input") |
| | 456 | (calculator-radix-input-mode ,(nth 2 x)) |
| | 457 | :keys ,(concat "i" (downcase (nth 2 x))) |
| | 458 | :style radio |
| | 459 | :selected |
| | 460 | (eq calculator-input-radix ',(nth 1 x))] |
| | 461 | [,(concat (nth 0 x) " Output") |
| | 462 | (calculator-radix-output-mode ,(nth 2 x)) |
| | 463 | :keys ,(concat "o" (downcase (nth 2 x))) |
| | 464 | :style radio |
| | 465 | :selected |
| | 466 | (eq calculator-output-radix ',(nth 1 x))])) |
| | 467 | '(("Decimal" nil "D") |
| | 468 | ("Binary" bin "B") |
| | 469 | ("Octal" oct "O") |
| | 470 | ("Hexadecimal" hex "H")))) |
| | 471 | (op (lambda (name key) |
| | 472 | `[,name (calculator-op ,key) :keys ,key]))) |
| | 473 | (easy-menu-define |
| | 474 | calculator-menu map "Calculator menu." |
| | 475 | `("Calculator" |
| | 476 | ["Help" |
| | 477 | (let ((last-command 'calculator-help)) (calculator-help)) |
| | 478 | :keys "?"] |
| | 479 | "---" |
| | 480 | ["Copy" calculator-copy] |
| | 481 | ["Paste" calculator-paste] |
| | 482 | "---" |
| | 483 | ["Electric mode" |
| | 484 | (progn (calculator-quit) |
| | 485 | (setq calculator-restart-other-mode t) |
| | 486 | (run-with-timer 0.1 nil (lambda () (message nil))) |
| | 487 | ;; the message from the menu will be visible, |
| | 488 | ;; couldn't make it go away... |
| | 489 | (calculator)) |
| | 490 | :active (not calculator-electric-mode)] |
| | 491 | ["Normal mode" |
| | 492 | (progn (setq calculator-restart-other-mode t) |
| | 493 | (calculator-quit)) |
| | 494 | :active calculator-electric-mode] |
| | 495 | "---" |
| | 496 | ("Functions" |
| | 497 | ,(funcall op "Repeat-right" ">") |
| | 498 | ,(funcall op "Repeat-left" "<") |
| | 499 | "------General------" |
| | 500 | ,(funcall op "Reciprocal" ";") |
| | 501 | ,(funcall op "Log" "L") |
| | 502 | ,(funcall op "Square-root" "Q") |
| | 503 | ,(funcall op "Factorial" "!") |
| | 504 | "------Trigonometric------" |
| | 505 | ,(funcall op "Sinus" "S") |
| | 506 | ,(funcall op "Cosine" "C") |
| | 507 | ,(funcall op "Tangent" "T") |
| | 508 | ,(funcall op "Inv-Sinus" "IS") |
| | 509 | ,(funcall op "Inv-Cosine" "IC") |
| | 510 | ,(funcall op "Inv-Tangent" "IT") |
| | 511 | "------Bitwise------" |
| | 512 | ,(funcall op "Or" "|") |
| | 513 | ,(funcall op "Xor" "#") |
| | 514 | ,(funcall op "And" "&") |
| | 515 | ,(funcall op "Not" "~")) |
| | 516 | ("Saved List" |
| | 517 | ["Eval+Save" calculator-save-on-list] |
| | 518 | ["Prev number" calculator-saved-up] |
| | 519 | ["Next number" calculator-saved-down] |
| | 520 | ["Delete current" calculator-clear |
| | 521 | :active (and calculator-display-fragile |
| | 522 | calculator-saved-list |
| | 523 | (= (car calculator-stack) |
| | 524 | (nth calculator-saved-ptr |
| | 525 | calculator-saved-list)))] |
| | 526 | ["Delete all" calculator-clear-saved] |
| | 527 | "---" |
| | 528 | ,(funcall op "List-total" "l") |
| | 529 | ,(funcall op "List-average" "v")) |
| | 530 | ("Registers" |
| | 531 | ["Get register" calculator-get-register] |
| | 532 | ["Set register" calculator-set-register]) |
| | 533 | ("Modes" |
| | 534 | ["Radians" |
| | 535 | (progn |
| | 536 | (and (or calculator-input-radix calculator-output-radix) |
| | 537 | (calculator-radix-mode "D")) |
| | 538 | (and calculator-deg (calculator-dec/deg-mode))) |
| | 539 | :keys "D" |
| | 540 | :style radio |
| | 541 | :selected (not (or calculator-input-radix |
| | 542 | calculator-output-radix |
| | 543 | calculator-deg))] |
| | 544 | ["Degrees" |
| | 545 | (progn |
| | 546 | (and (or calculator-input-radix calculator-output-radix) |
| | 547 | (calculator-radix-mode "D")) |
| | 548 | (or calculator-deg (calculator-dec/deg-mode))) |
| | 549 | :keys "D" |
| | 550 | :style radio |
| | 551 | :selected (and calculator-deg |
| | 552 | (not (or calculator-input-radix |
| | 553 | calculator-output-radix)))] |
| | 554 | "---" |
| | 555 | ,@(mapcar 'car radix-selectors) |
| | 556 | ("Separate I/O" |
| | 557 | ,@(mapcar (lambda (x) (nth 1 x)) radix-selectors) |
| | 558 | "---" |
| | 559 | ,@(mapcar (lambda (x) (nth 2 x)) radix-selectors))) |
| | 560 | ("Decimal Display" |
| | 561 | ,@(mapcar (lambda (d) |
| | 562 | (vector (cadr d) |
| | 563 | ;; Note: inserts actual object here |
| | 564 | `(calculator-rotate-displayer ',d))) |
| | 565 | calculator-displayers) |
| | 566 | "---" |
| | 567 | ["Change Prev Display" calculator-displayer-prev] |
| | 568 | ["Change Next Display" calculator-displayer-next]) |
| | 569 | "---" |
| | 570 | ["Copy+Quit" calculator-save-and-quit] |
| | 571 | ["Quit" calculator-quit])))) |
| | 572 | map) |
| | 573 | "The calculator key map.") |
| | 574 | |
| | 575 | ;;;--------------------------------------------------------------------- |
| | 576 | ;;; Startup and mode stuff |
| | 577 | |
| | 578 | (define-derived-mode calculator-mode fundamental-mode "Calculator" |
| | 579 | ;; this help is also used as the major help screen |
| | 580 | "A [not so] simple calculator for Emacs. |
| | 581 | |
| | 582 | This calculator is used in the same way as other popular calculators |
| | 583 | like xcalc or calc.exe - but using an Emacs interface. |
| | 584 | |
| | 585 | Expressions are entered using normal infix notation, parens are used as |
| | 586 | normal. Unary functions are usually postfix, but some depends on the |
| | 587 | value of `calculator-unary-style' (if the style for an operator below is |
| | 588 | specified, then it is fixed, otherwise it depends on this variable). |
| | 589 | `+' and `-' can be used as either binary operators or prefix unary |
| | 590 | operators. Numbers can be entered with exponential notation using `e', |
| | 591 | except when using a non-decimal radix mode for input (in this case `e' |
| | 592 | will be the hexadecimal digit). If the result of a calculation is too |
| | 593 | large (out of range for Emacs), the value of \"inf\" is returned. |
| | 594 | |
| | 595 | Here are the editing keys: |
| | 596 | * `RET' `=' evaluate the current expression |
| | 597 | * `C-insert' copy the whole current expression to the `kill-ring' |
| | 598 | * `C-return' evaluate, save result the `kill-ring' and exit |
| | 599 | * `insert' paste a number if the one was copied (normally) |
| | 600 | * `delete' `C-d' clear last argument or whole expression (hit twice) |
| | 601 | * `backspace' delete a digit or a previous expression element |
| | 602 | * `h' `?' pop-up a quick reference help |
| | 603 | * `ESC' `q' exit (`ESC' can be used if `calculator-bind-escape' is |
| | 604 | non-nil, otherwise use three consecutive `ESC's) |
| | 605 | |
| | 606 | These operators are pre-defined: |
| | 607 | * `+' `-' `*' `/' the common binary operators |
| | 608 | * `\\' `%' integer division and reminder |
| | 609 | * `_' `;' postfix unary negation and reciprocal |
| | 610 | * `^' `L' binary operators for x^y and log(x) in base y |
| | 611 | * `Q' `!' unary square root and factorial |
| | 612 | * `S' `C' `T' unary trigonometric operators - sin, cos and tan |
| | 613 | * `|' `#' `&' `~' bitwise operators - or, xor, and, not |
| | 614 | |
| | 615 | The trigonometric functions can be inverted if prefixed with an `I', see |
| | 616 | below for the way to use degrees instead of the default radians. |
| | 617 | |
| | 618 | Two special postfix unary operators are `>' and `<': whenever a binary |
| | 619 | operator is performed, it is remembered along with its arguments; then |
| | 620 | `>' (`<') will apply the same operator with the same right (left) |
| | 621 | argument. |
| | 622 | |
| | 623 | hex/oct/bin modes can be set for input and for display separately. |
| | 624 | Another toggle-able mode is for using degrees instead of radians for |
| | 625 | trigonometric functions. |
| | 626 | The keys to switch modes are (`X' is shortcut for `H'): |
| | 627 | * `D' switch to all-decimal mode, or toggle degrees/radians |
| | 628 | * `B' `O' `H' `X' binary/octal/hexadecimal modes for input & display |
| | 629 | * `i' `o' followed by one of `D' `B' `O' `H' `X' (case |
| | 630 | insensitive) sets only the input or display radix mode |
| | 631 | The prompt indicates the current modes: |
| | 632 | * \"D=\": degrees mode; |
| | 633 | * \"?=\": (? is B/O/H) this is the radix for both input and output; |
| | 634 | * \"=?\": (? is B/O/H) the display radix (when input is decimal); |
| | 635 | * \"??\": (? is D/B/O/H) 1st char for input radix, 2nd for display. |
| | 636 | |
| | 637 | Also, the quote key can be used to switch display modes for decimal |
| | 638 | numbers (double-quote rotates back), and the two brace characters |
| | 639 | \(\"{\" and \"}\" change display parameters that these displayers use (if |
| | 640 | they handle such). If output is using any radix mode, then these keys |
| | 641 | toggle digit grouping mode and the chunk size. |
| | 642 | |
| | 643 | Values can be saved for future reference in either a list of saved |
| | 644 | values, or in registers. |
| | 645 | |
| | 646 | The list of saved values is useful for statistics operations on some |
| | 647 | collected data. It is possible to navigate in this list, and if the |
| | 648 | value shown is the current one on the list, an indication is displayed |
| | 649 | as \"[N]\" if this is the last number and there are N numbers, or |
| | 650 | \"[M/N]\" if the M-th value is shown. |
| | 651 | * `SPC' evaluate the current value as usual, but also adds |
| | 652 | the result to the list of saved values |
| | 653 | * `l' `v' computes total / average of saved values |
| | 654 | * `up' `C-p' browse to the previous value in the list |
| | 655 | * `down' `C-n' browse to the next value in the list |
| | 656 | * `delete' `C-d' remove current value from the list (if it is on it) |
| | 657 | * `C-delete' `C-c' delete the whole list |
| | 658 | |
| | 659 | Registers are variable-like place-holders for values: |
| | 660 | * `s' followed by a character attach the current value to that character |
| | 661 | * `g' followed by a character fetches the attached value |
| | 662 | |
| | 663 | There are many variables that can be used to customize the calculator. |
| | 664 | Some interesting customization variables are: |
| | 665 | * `calculator-electric-mode' use only the echo-area electrically. |
| | 666 | * `calculator-unary-style' set most unary ops to pre/postfix style. |
| | 667 | * `calculator-user-registers' to define user-preset registers. |
| | 668 | * `calculator-user-operators' to add user-defined operators. |
| | 669 | See the documentation for these variables, and \"calculator.el\" for |
| | 670 | more information. |
| | 671 | |
| | 672 | \\{calculator-mode-map}") |
| | 673 | |
| | 674 | (declare-function Electric-command-loop "electric" |
| | 675 | (return-tag &optional prompt inhibit-quitting |
| | 676 | loop-function loop-state)) |
| | 677 | |
| | 678 | ;;;###autoload |
| | 679 | (defun calculator () |
| | 680 | "Run the Emacs calculator. |
| | 681 | See the documentation for `calculator-mode' for more information." |
| | 682 | (interactive) |
| | 683 | (if calculator-restart-other-mode |
| | 684 | (setq calculator-electric-mode (not calculator-electric-mode))) |
| | 685 | (if calculator-initial-operators |
| | 686 | (progn (calculator-add-operators calculator-initial-operators) |
| | 687 | (setq calculator-initial-operators nil) |
| | 688 | ;; don't change this since it is a customization variable, |
| | 689 | ;; its set function will add any new operators |
| | 690 | (calculator-add-operators calculator-user-operators))) |
| | 691 | (setq calculator-buffer (get-buffer-create "*calculator*")) |
| | 692 | (if calculator-electric-mode |
| | 693 | (save-window-excursion |
| | 694 | (progn (require 'electric) (message nil)) ; hide load message |
| | 695 | (let (old-g-map old-l-map (echo-keystrokes 0) |
| | 696 | (garbage-collection-messages nil)) ; no gc msg when electric |
| | 697 | (set-window-buffer (minibuffer-window) calculator-buffer) |
| | 698 | (select-window (minibuffer-window)) |
| | 699 | (calculator-reset) |
| | 700 | (calculator-update-display) |
| | 701 | (setq old-l-map (current-local-map)) |
| | 702 | (setq old-g-map (current-global-map)) |
| | 703 | (setq calculator-saved-global-map (current-global-map)) |
| | 704 | (use-local-map nil) |
| | 705 | (use-global-map calculator-mode-map) |
| | 706 | (run-hooks 'calculator-mode-hook) |
| | 707 | (unwind-protect |
| | 708 | (catch 'calculator-done |
| | 709 | (Electric-command-loop |
| | 710 | 'calculator-done |
| | 711 | ;; can't use 'noprompt, bug in electric.el |
| | 712 | (lambda () 'noprompt) |
| | 713 | nil |
| | 714 | (lambda (_x _y) (calculator-update-display)))) |
| | 715 | (and calculator-buffer |
| | 716 | (catch 'calculator-done (calculator-quit))) |
| | 717 | (use-local-map old-l-map) |
| | 718 | (use-global-map old-g-map)))) |
| | 719 | (progn |
| | 720 | (cond |
| | 721 | ((not (get-buffer-window calculator-buffer)) |
| | 722 | (let ((window-min-height 2)) |
| | 723 | ;; maybe leave two lines for our window because of the |
| | 724 | ;; normal `raised' mode line |
| | 725 | (select-window |
| | 726 | (split-window-below |
| | 727 | ;; If the mode line might interfere with the calculator |
| | 728 | ;; buffer, use 3 lines instead. |
| | 729 | (if (and (fboundp 'face-attr-construct) |
| | 730 | (let* ((dh (plist-get (face-attr-construct 'default) :height)) |
| | 731 | (mf (face-attr-construct 'mode-line)) |
| | 732 | (mh (plist-get mf :height))) |
| | 733 | ;; If the mode line is shorter than the default, |
| | 734 | ;; stick with 2 lines. (It may be necessary to |
| | 735 | ;; check how much shorter.) |
| | 736 | (and |
| | 737 | (not |
| | 738 | (or (and (integerp dh) |
| | 739 | (integerp mh) |
| | 740 | (< mh dh)) |
| | 741 | (and (numberp mh) |
| | 742 | (not (integerp mh)) |
| | 743 | (< mh 1)))) |
| | 744 | (or |
| | 745 | ;; If the mode line is taller than the default, |
| | 746 | ;; use 3 lines. |
| | 747 | (and (integerp dh) |
| | 748 | (integerp mh) |
| | 749 | (> mh dh)) |
| | 750 | (and (numberp mh) |
| | 751 | (not (integerp mh)) |
| | 752 | (> mh 1)) |
| | 753 | ;; If the mode line has a box with non-negative line-width, |
| | 754 | ;; use 3 lines. |
| | 755 | (let* ((bx (plist-get mf :box)) |
| | 756 | (lh (plist-get bx :line-width))) |
| | 757 | (and bx |
| | 758 | (or |
| | 759 | (not lh) |
| | 760 | (> lh 0)))) |
| | 761 | ;; If the mode line has an overline, use 3 lines. |
| | 762 | (plist-get (face-attr-construct 'mode-line) :overline))))) |
| | 763 | -3 -2))) |
| | 764 | (switch-to-buffer calculator-buffer))) |
| | 765 | ((not (eq (current-buffer) calculator-buffer)) |
| | 766 | (select-window (get-buffer-window calculator-buffer)))) |
| | 767 | (calculator-mode) |
| | 768 | (setq buffer-read-only t) |
| | 769 | (calculator-reset) |
| | 770 | (message "Hit `?' For a quick help screen."))) |
| | 771 | (if (and calculator-restart-other-mode calculator-electric-mode) |
| | 772 | (calculator))) |
| | 773 | |
| | 774 | (defun calculator-message (string &rest arguments) |
| | 775 | "Same as `message', but special handle of electric mode." |
| | 776 | (apply 'message string arguments) |
| | 777 | (if calculator-electric-mode |
| | 778 | (progn (sit-for 1) (message nil)))) |
| | 779 | |
| | 780 | ;;;--------------------------------------------------------------------- |
| | 781 | ;;; Operators |
| | 782 | |
| | 783 | (defun calculator-op-arity (op) |
| | 784 | "Return OP's arity, 2, +1 or -1." |
| | 785 | (let ((arity (or (nth 3 op) 'x))) |
| | 786 | (if (numberp arity) |
| | 787 | arity |
| | 788 | (if (eq calculator-unary-style 'postfix) +1 -1)))) |
| | 789 | |
| | 790 | (defun calculator-op-prec (op) |
| | 791 | "Return OP's precedence for reducing when inserting into the stack. |
| | 792 | Defaults to 1." |
| | 793 | (or (nth 4 op) 1)) |
| | 794 | |
| | 795 | (defun calculator-add-operators (more-ops) |
| | 796 | "This function handles operator addition. |
| | 797 | Adds MORE-OPS to `calculator-operator', called initially to handle |
| | 798 | `calculator-initial-operators' and `calculator-user-operators'." |
| | 799 | (let ((added-ops nil)) |
| | 800 | (while more-ops |
| | 801 | (or (eq (car (car more-ops)) 'nobind) |
| | 802 | (let ((i -1) (key (car (car more-ops)))) |
| | 803 | ;; make sure the key is undefined, so it's easy to define |
| | 804 | ;; prefix keys |
| | 805 | (while (< (setq i (1+ i)) (length key)) |
| | 806 | (or (keymapp |
| | 807 | (lookup-key calculator-mode-map |
| | 808 | (substring key 0 (1+ i)))) |
| | 809 | (progn |
| | 810 | (define-key |
| | 811 | calculator-mode-map (substring key 0 (1+ i)) nil) |
| | 812 | (setq i (length key))))) |
| | 813 | (define-key calculator-mode-map key 'calculator-op))) |
| | 814 | (setq added-ops (cons (if (eq (car (car more-ops)) 'nobind) |
| | 815 | (cdr (car more-ops)) |
| | 816 | (car more-ops)) |
| | 817 | added-ops)) |
| | 818 | (setq more-ops (cdr more-ops))) |
| | 819 | ;; added-ops come first, but in correct order |
| | 820 | (setq calculator-operators |
| | 821 | (append (nreverse added-ops) calculator-operators)))) |
| | 822 | |
| | 823 | ;;;--------------------------------------------------------------------- |
| | 824 | ;;; Display stuff |
| | 825 | |
| | 826 | (defun calculator-reset () |
| | 827 | "Reset calculator variables." |
| | 828 | (or calculator-restart-other-mode |
| | 829 | (setq calculator-stack nil |
| | 830 | calculator-curnum nil |
| | 831 | calculator-stack-display nil |
| | 832 | calculator-display-fragile nil)) |
| | 833 | (setq calculator-restart-other-mode nil) |
| | 834 | (calculator-update-display)) |
| | 835 | |
| | 836 | (defun calculator-get-prompt () |
| | 837 | "Return a string to display. |
| | 838 | The string is set not to exceed the screen width." |
| | 839 | (let* ((calculator-prompt |
| | 840 | (format calculator-prompt |
| | 841 | (cond |
| | 842 | ((or calculator-output-radix calculator-input-radix) |
| | 843 | (if (eq calculator-output-radix |
| | 844 | calculator-input-radix) |
| | 845 | (concat |
| | 846 | (char-to-string |
| | 847 | (car (rassq calculator-output-radix |
| | 848 | calculator-char-radix))) |
| | 849 | "=") |
| | 850 | (concat |
| | 851 | (if calculator-input-radix |
| | 852 | (char-to-string |
| | 853 | (car (rassq calculator-input-radix |
| | 854 | calculator-char-radix))) |
| | 855 | "=") |
| | 856 | (char-to-string |
| | 857 | (car (rassq calculator-output-radix |
| | 858 | calculator-char-radix)))))) |
| | 859 | (calculator-deg "D=") |
| | 860 | (t "==")))) |
| | 861 | (prompt |
| | 862 | (concat calculator-prompt |
| | 863 | (cdr calculator-stack-display) |
| | 864 | (cond (calculator-curnum |
| | 865 | ;; number being typed |
| | 866 | (concat calculator-curnum "_")) |
| | 867 | ((and (= 1 (length calculator-stack)) |
| | 868 | calculator-display-fragile) |
| | 869 | ;; only the result is shown, next number will |
| | 870 | ;; restart |
| | 871 | nil) |
| | 872 | (t |
| | 873 | ;; waiting for a number or an operator |
| | 874 | "?")))) |
| | 875 | (trim (- (length prompt) (1- (window-width))))) |
| | 876 | (if (<= trim 0) |
| | 877 | prompt |
| | 878 | (concat calculator-prompt |
| | 879 | (substring prompt (+ trim (length calculator-prompt))))))) |
| | 880 | |
| | 881 | (defun calculator-string-to-number (str) |
| | 882 | "Convert the given STR to a number, according to the value of |
| | 883 | `calculator-input-radix'." |
| | 884 | (if calculator-input-radix |
| | 885 | (let ((radix |
| | 886 | (cdr (assq calculator-input-radix |
| | 887 | '((bin . 2) (oct . 8) (hex . 16))))) |
| | 888 | (i -1) (value 0) (new-value 0)) |
| | 889 | ;; assume mostly valid input (e.g., characters in range) |
| | 890 | (while (< (setq i (1+ i)) (length str)) |
| | 891 | (setq new-value |
| | 892 | (let* ((ch (upcase (aref str i))) |
| | 893 | (n (cond ((< ch ?0) nil) |
| | 894 | ((<= ch ?9) (- ch ?0)) |
| | 895 | ((< ch ?A) nil) |
| | 896 | ((<= ch ?Z) (- ch (- ?A 10))) |
| | 897 | (t nil)))) |
| | 898 | (if (and n (<= 0 n) (< n radix)) |
| | 899 | (+ n (* radix value)) |
| | 900 | (progn |
| | 901 | (calculator-message |
| | 902 | "Warning: Ignoring bad input character `%c'." ch) |
| | 903 | (sit-for 1) |
| | 904 | value)))) |
| | 905 | (if (if (< new-value 0) (> value 0) (< value 0)) |
| | 906 | (calculator-message "Warning: Overflow in input.")) |
| | 907 | (setq value new-value)) |
| | 908 | value) |
| | 909 | (car (read-from-string |
| | 910 | (cond ((equal "." str) "0.0") |
| | 911 | ((string-match-p "[eE][+-]?$" str) (concat str "0")) |
| | 912 | ((string-match-p "\\.[0-9]\\|[eE]" str) str) |
| | 913 | ((string-match-p "\\." str) |
| | 914 | ;; do this because Emacs reads "23." as an integer |
| | 915 | (concat str "0")) |
| | 916 | ((stringp str) (concat str ".0")) |
| | 917 | (t "0.0")))))) |
| | 918 | |
| | 919 | (defun calculator-curnum-value () |
| | 920 | "Get the numeric value of the displayed number string as a float." |
| | 921 | (calculator-string-to-number calculator-curnum)) |
| | 922 | |
| | 923 | (defun calculator-rotate-displayer (&optional new-disp) |
| | 924 | "Switch to the next displayer on the `calculator-displayers' list. |
| | 925 | Can be called with an optional argument NEW-DISP to force rotation to |
| | 926 | that argument. |
| | 927 | If radix output mode is active, toggle digit grouping." |
| | 928 | (interactive) |
| | 929 | (cond |
| | 930 | (calculator-output-radix |
| | 931 | (setq calculator-radix-grouping-mode |
| | 932 | (not calculator-radix-grouping-mode)) |
| | 933 | (calculator-message |
| | 934 | "Digit grouping mode %s." |
| | 935 | (if calculator-radix-grouping-mode "ON" "OFF"))) |
| | 936 | (t |
| | 937 | (setq calculator-displayers |
| | 938 | (if (and new-disp (memq new-disp calculator-displayers)) |
| | 939 | (let ((tmp nil)) |
| | 940 | (while (not (eq (car calculator-displayers) new-disp)) |
| | 941 | (setq tmp (cons (car calculator-displayers) tmp)) |
| | 942 | (setq calculator-displayers |
| | 943 | (cdr calculator-displayers))) |
| | 944 | (setq calculator-displayers |
| | 945 | (nconc calculator-displayers (nreverse tmp)))) |
| | 946 | (nconc (cdr calculator-displayers) |
| | 947 | (list (car calculator-displayers))))) |
| | 948 | (calculator-message |
| | 949 | "Using %s." (cadr (car calculator-displayers))))) |
| | 950 | (calculator-enter)) |
| | 951 | |
| | 952 | (defun calculator-rotate-displayer-back () |
| | 953 | "Like `calculator-rotate-displayer', but rotates modes back. |
| | 954 | If radix output mode is active, toggle digit grouping." |
| | 955 | (interactive) |
| | 956 | (calculator-rotate-displayer (car (last calculator-displayers)))) |
| | 957 | |
| | 958 | (defun calculator-displayer-prev () |
| | 959 | "Send the current displayer function a 'left argument. |
| | 960 | This is used to modify display arguments (if the current displayer |
| | 961 | function supports this). |
| | 962 | If radix output mode is active, increase the grouping size." |
| | 963 | (interactive) |
| | 964 | (if calculator-output-radix |
| | 965 | (progn (setq calculator-radix-grouping-digits |
| | 966 | (1+ calculator-radix-grouping-digits)) |
| | 967 | (calculator-enter)) |
| | 968 | (and (car calculator-displayers) |
| | 969 | (let ((disp (caar calculator-displayers))) |
| | 970 | (cond |
| | 971 | ((symbolp disp) (funcall disp 'left)) |
| | 972 | ((and (consp disp) (eq 'std (car disp))) |
| | 973 | (calculator-standard-displayer 'left (cadr disp)))))))) |
| | 974 | |
| | 975 | (defun calculator-displayer-next () |
| | 976 | "Send the current displayer function a 'right argument. |
| | 977 | This is used to modify display arguments (if the current displayer |
| | 978 | function supports this). |
| | 979 | If radix output mode is active, decrease the grouping size." |
| | 980 | (interactive) |
| | 981 | (if calculator-output-radix |
| | 982 | (progn (setq calculator-radix-grouping-digits |
| | 983 | (max 2 (1- calculator-radix-grouping-digits))) |
| | 984 | (calculator-enter)) |
| | 985 | (and (car calculator-displayers) |
| | 986 | (let ((disp (caar calculator-displayers))) |
| | 987 | (cond |
| | 988 | ((symbolp disp) (funcall disp 'right)) |
| | 989 | ((and (consp disp) (eq 'std (car disp))) |
| | 990 | (calculator-standard-displayer 'right (cadr disp)))))))) |
| | 991 | |
| | 992 | (defun calculator-remove-zeros (numstr) |
| | 993 | "Get a number string NUMSTR and remove unnecessary zeros. |
| | 994 | The behavior of this function is controlled by |
| | 995 | `calculator-remove-zeros'." |
| | 996 | (cond ((and (eq calculator-remove-zeros t) |
| | 997 | (string-match "\\.0+\\([eE][+-]?[0-9]*\\)?$" numstr)) |
| | 998 | ;; remove all redundant zeros leaving an integer |
| | 999 | (if (match-beginning 1) |
| | 1000 | (concat (substring numstr 0 (match-beginning 0)) |
| | 1001 | (match-string 1 numstr)) |
| | 1002 | (substring numstr 0 (match-beginning 0)))) |
| | 1003 | ((and calculator-remove-zeros |
| | 1004 | (string-match |
| | 1005 | "\\..\\([0-9]*[1-9]\\)?\\(0+\\)\\([eE][+-]?[0-9]*\\)?$" |
| | 1006 | numstr)) |
| | 1007 | ;; remove zeros, except for first after the "." |
| | 1008 | (if (match-beginning 3) |
| | 1009 | (concat (substring numstr 0 (match-beginning 2)) |
| | 1010 | (match-string 3 numstr)) |
| | 1011 | (substring numstr 0 (match-beginning 2)))) |
| | 1012 | (t numstr))) |
| | 1013 | |
| | 1014 | (defun calculator-standard-displayer (num char) |
| | 1015 | "Standard display function, used to display NUM. |
| | 1016 | Its behavior is determined by `calculator-number-digits' and the given |
| | 1017 | CHAR argument (both will be used to compose a format string). If the |
| | 1018 | char is \"n\" then this function will choose one between %f or %e, this |
| | 1019 | is a work around %g jumping to exponential notation too fast. |
| | 1020 | |
| | 1021 | The special 'left and 'right symbols will make it change the current |
| | 1022 | number of digits displayed (`calculator-number-digits'). |
| | 1023 | |
| | 1024 | It will also remove redundant zeros from the result." |
| | 1025 | (if (symbolp num) |
| | 1026 | (cond ((eq num 'left) |
| | 1027 | (and (> calculator-number-digits 0) |
| | 1028 | (setq calculator-number-digits |
| | 1029 | (1- calculator-number-digits)) |
| | 1030 | (calculator-enter))) |
| | 1031 | ((eq num 'right) |
| | 1032 | (setq calculator-number-digits |
| | 1033 | (1+ calculator-number-digits)) |
| | 1034 | (calculator-enter))) |
| | 1035 | (let ((str (if (zerop num) |
| | 1036 | "0" |
| | 1037 | (format |
| | 1038 | (concat "%." |
| | 1039 | (number-to-string calculator-number-digits) |
| | 1040 | (if (eq char ?n) |
| | 1041 | (let ((n (abs num))) |
| | 1042 | (if (or (< n 0.001) (> n 1e8)) "e" "f")) |
| | 1043 | (string char))) |
| | 1044 | num)))) |
| | 1045 | (calculator-remove-zeros str)))) |
| | 1046 | |
| | 1047 | (defun calculator-eng-display (num) |
| | 1048 | "Display NUM in engineering notation. |
| | 1049 | The number of decimal digits used is controlled by |
| | 1050 | `calculator-number-digits', so to change it at runtime you have to use |
| | 1051 | the 'left or 'right when one of the standard modes is used." |
| | 1052 | (if (symbolp num) |
| | 1053 | (cond ((eq num 'left) |
| | 1054 | (setq calculator-eng-extra |
| | 1055 | (if calculator-eng-extra |
| | 1056 | (1+ calculator-eng-extra) |
| | 1057 | 1)) |
| | 1058 | (let ((calculator-eng-tmp-show t)) (calculator-enter))) |
| | 1059 | ((eq num 'right) |
| | 1060 | (setq calculator-eng-extra |
| | 1061 | (if calculator-eng-extra |
| | 1062 | (1- calculator-eng-extra) |
| | 1063 | -1)) |
| | 1064 | (let ((calculator-eng-tmp-show t)) (calculator-enter)))) |
| | 1065 | (let ((exp 0)) |
| | 1066 | (and (not (= 0 num)) |
| | 1067 | (progn |
| | 1068 | (while (< (abs num) 1.0) |
| | 1069 | (setq num (* num 1000.0)) (setq exp (- exp 3))) |
| | 1070 | (while (> (abs num) 999.0) |
| | 1071 | (setq num (/ num 1000.0)) (setq exp (+ exp 3))) |
| | 1072 | (and calculator-eng-tmp-show |
| | 1073 | (not (= 0 calculator-eng-extra)) |
| | 1074 | (let ((i calculator-eng-extra)) |
| | 1075 | (while (> i 0) |
| | 1076 | (setq num (* num 1000.0)) (setq exp (- exp 3)) |
| | 1077 | (setq i (1- i))) |
| | 1078 | (while (< i 0) |
| | 1079 | (setq num (/ num 1000.0)) (setq exp (+ exp 3)) |
| | 1080 | (setq i (1+ i))))))) |
| | 1081 | (or calculator-eng-tmp-show (setq calculator-eng-extra nil)) |
| | 1082 | (let ((str (format (concat "%." (number-to-string |
| | 1083 | calculator-number-digits) |
| | 1084 | "f") |
| | 1085 | num))) |
| | 1086 | (concat (let ((calculator-remove-zeros |
| | 1087 | ;; make sure we don't leave integers |
| | 1088 | (and calculator-remove-zeros 'x))) |
| | 1089 | (calculator-remove-zeros str)) |
| | 1090 | "e" (number-to-string exp)))))) |
| | 1091 | |
| | 1092 | (defun calculator-number-to-string (num) |
| | 1093 | "Convert NUM to a displayable string." |
| | 1094 | (cond |
| | 1095 | ((and (numberp num) calculator-output-radix) |
| | 1096 | ;; print with radix - for binary I convert the octal number |
| | 1097 | (let ((str (format (if (eq calculator-output-radix 'hex) "%x" "%o") |
| | 1098 | (calculator-truncate |
| | 1099 | (if calculator-2s-complement num (abs num)))))) |
| | 1100 | (if (eq calculator-output-radix 'bin) |
| | 1101 | (let ((i -1) (s "")) |
| | 1102 | (while (< (setq i (1+ i)) (length str)) |
| | 1103 | (setq s |
| | 1104 | (concat s |
| | 1105 | (cdr (assq (aref str i) |
| | 1106 | '((?0 . "000") (?1 . "001") |
| | 1107 | (?2 . "010") (?3 . "011") |
| | 1108 | (?4 . "100") (?5 . "101") |
| | 1109 | (?6 . "110") (?7 . "111"))))))) |
| | 1110 | (string-match "^0*\\(.+\\)" s) |
| | 1111 | (setq str (match-string 1 s)))) |
| | 1112 | (if calculator-radix-grouping-mode |
| | 1113 | (let ((d (/ (length str) calculator-radix-grouping-digits)) |
| | 1114 | (r (% (length str) calculator-radix-grouping-digits))) |
| | 1115 | (while (>= (setq d (1- d)) (if (zerop r) 1 0)) |
| | 1116 | (let ((i (+ r (* d calculator-radix-grouping-digits)))) |
| | 1117 | (setq str (concat (substring str 0 i) |
| | 1118 | calculator-radix-grouping-separator |
| | 1119 | (substring str i))))))) |
| | 1120 | (upcase |
| | 1121 | (if (and (not calculator-2s-complement) (< num 0)) |
| | 1122 | (concat "-" str) |
| | 1123 | str)))) |
| | 1124 | ((and (numberp num) calculator-displayer) |
| | 1125 | (cond |
| | 1126 | ((stringp calculator-displayer) |
| | 1127 | (format calculator-displayer num)) |
| | 1128 | ((symbolp calculator-displayer) |
| | 1129 | (funcall calculator-displayer num)) |
| | 1130 | ((eq 'std (car-safe calculator-displayer)) |
| | 1131 | (calculator-standard-displayer num (cadr calculator-displayer))) |
| | 1132 | ((listp calculator-displayer) |
| | 1133 | (eval calculator-displayer `((num. ,num)))) |
| | 1134 | (t (prin1-to-string num t)))) |
| | 1135 | ;; operators are printed here |
| | 1136 | (t (prin1-to-string (nth 1 num) t)))) |
| | 1137 | |
| | 1138 | (defun calculator-update-display (&optional force) |
| | 1139 | "Update the display. |
| | 1140 | If optional argument FORCE is non-nil, don't use the cached string." |
| | 1141 | (set-buffer calculator-buffer) |
| | 1142 | ;; update calculator-stack-display |
| | 1143 | (if (or force |
| | 1144 | (not (eq (car calculator-stack-display) calculator-stack))) |
| | 1145 | (setq calculator-stack-display |
| | 1146 | (cons calculator-stack |
| | 1147 | (if calculator-stack |
| | 1148 | (concat |
| | 1149 | (let ((calculator-displayer |
| | 1150 | (if (and calculator-displayers |
| | 1151 | (= 1 (length calculator-stack))) |
| | 1152 | ;; customizable display for a single value |
| | 1153 | (caar calculator-displayers) |
| | 1154 | calculator-displayer))) |
| | 1155 | (mapconcat 'calculator-number-to-string |
| | 1156 | (reverse calculator-stack) |
| | 1157 | " ")) |
| | 1158 | " " |
| | 1159 | (and calculator-display-fragile |
| | 1160 | calculator-saved-list |
| | 1161 | (= (car calculator-stack) |
| | 1162 | (nth calculator-saved-ptr |
| | 1163 | calculator-saved-list)) |
| | 1164 | (if (= 0 calculator-saved-ptr) |
| | 1165 | (format "[%s]" (length calculator-saved-list)) |
| | 1166 | (format "[%s/%s]" |
| | 1167 | (- (length calculator-saved-list) |
| | 1168 | calculator-saved-ptr) |
| | 1169 | (length calculator-saved-list))))) |
| | 1170 | "")))) |
| | 1171 | (let ((inhibit-read-only t)) |
| | 1172 | (erase-buffer) |
| | 1173 | (insert (calculator-get-prompt))) |
| | 1174 | (set-buffer-modified-p nil) |
| | 1175 | (if calculator-display-fragile |
| | 1176 | (goto-char (1+ (length calculator-prompt))) |
| | 1177 | (goto-char (1- (point))))) |
| | 1178 | |
| | 1179 | ;;;--------------------------------------------------------------------- |
| | 1180 | ;;; Stack computations |
| | 1181 | |
| | 1182 | (defun calculator-reduce-stack (prec) |
| | 1183 | "Reduce the stack using top operator. |
| | 1184 | PREC is a precedence - reduce everything with higher precedence." |
| | 1185 | (while |
| | 1186 | (cond |
| | 1187 | ((and (cdr (cdr calculator-stack)) ; have three values |
| | 1188 | (consp (nth 0 calculator-stack)) ; two operators & num |
| | 1189 | (numberp (nth 1 calculator-stack)) |
| | 1190 | (consp (nth 2 calculator-stack)) |
| | 1191 | (eq '\) (nth 1 (nth 0 calculator-stack))) |
| | 1192 | (eq '\( (nth 1 (nth 2 calculator-stack)))) |
| | 1193 | ;; reduce "... ( x )" --> "... x" |
| | 1194 | (setq calculator-stack |
| | 1195 | (cons (nth 1 calculator-stack) |
| | 1196 | (nthcdr 3 calculator-stack))) |
| | 1197 | ;; another iteration |
| | 1198 | t) |
| | 1199 | ((and (cdr (cdr calculator-stack)) ; have three values |
| | 1200 | (numberp (nth 0 calculator-stack)) ; two nums & operator |
| | 1201 | (consp (nth 1 calculator-stack)) |
| | 1202 | (numberp (nth 2 calculator-stack)) |
| | 1203 | (= 2 (calculator-op-arity ; binary operator |
| | 1204 | (nth 1 calculator-stack))) |
| | 1205 | (<= prec ; with higher prec. |
| | 1206 | (calculator-op-prec (nth 1 calculator-stack)))) |
| | 1207 | ;; reduce "... x op y" --> "... r", r is the result |
| | 1208 | (setq calculator-stack |
| | 1209 | (cons (calculator-funcall |
| | 1210 | (nth 2 (nth 1 calculator-stack)) |
| | 1211 | (nth 2 calculator-stack) |
| | 1212 | (nth 0 calculator-stack)) |
| | 1213 | (nthcdr 3 calculator-stack))) |
| | 1214 | ;; another iteration |
| | 1215 | t) |
| | 1216 | ((and (>= (length calculator-stack) 2) ; have two values |
| | 1217 | (numberp (nth 0 calculator-stack)) ; number & operator |
| | 1218 | (consp (nth 1 calculator-stack)) |
| | 1219 | (= -1 (calculator-op-arity ; prefix-unary op |
| | 1220 | (nth 1 calculator-stack))) |
| | 1221 | (<= prec ; with higher prec. |
| | 1222 | (calculator-op-prec (nth 1 calculator-stack)))) |
| | 1223 | ;; reduce "... op x" --> "... r" for prefix op |
| | 1224 | (setq calculator-stack |
| | 1225 | (cons (calculator-funcall |
| | 1226 | (nth 2 (nth 1 calculator-stack)) |
| | 1227 | (nth 0 calculator-stack)) |
| | 1228 | (nthcdr 2 calculator-stack))) |
| | 1229 | ;; another iteration |
| | 1230 | t) |
| | 1231 | ((and (cdr calculator-stack) ; have two values |
| | 1232 | (consp (nth 0 calculator-stack)) ; operator & number |
| | 1233 | (numberp (nth 1 calculator-stack)) |
| | 1234 | (= +1 (calculator-op-arity ; postfix-unary op |
| | 1235 | (nth 0 calculator-stack))) |
| | 1236 | (<= prec ; with higher prec. |
| | 1237 | (calculator-op-prec (nth 0 calculator-stack)))) |
| | 1238 | ;; reduce "... x op" --> "... r" for postfix op |
| | 1239 | (setq calculator-stack |
| | 1240 | (cons (calculator-funcall |
| | 1241 | (nth 2 (nth 0 calculator-stack)) |
| | 1242 | (nth 1 calculator-stack)) |
| | 1243 | (nthcdr 2 calculator-stack))) |
| | 1244 | ;; another iteration |
| | 1245 | t) |
| | 1246 | ((and calculator-stack ; have one value |
| | 1247 | (consp (nth 0 calculator-stack)) ; an operator |
| | 1248 | (= 0 (calculator-op-arity ; 0-ary op |
| | 1249 | (nth 0 calculator-stack)))) |
| | 1250 | ;; reduce "... op" --> "... r" for 0-ary op |
| | 1251 | (setq calculator-stack |
| | 1252 | (cons (calculator-funcall |
| | 1253 | (nth 2 (nth 0 calculator-stack))) |
| | 1254 | (nthcdr 1 calculator-stack))) |
| | 1255 | ;; another iteration |
| | 1256 | t) |
| | 1257 | ((and (cdr calculator-stack) ; have two values |
| | 1258 | (numberp (nth 0 calculator-stack)) ; both numbers |
| | 1259 | (numberp (nth 1 calculator-stack))) |
| | 1260 | ;; get rid of redundant numbers: |
| | 1261 | ;; reduce "... y x" --> "... x" |
| | 1262 | ;; needed for 0-ary ops that puts more values |
| | 1263 | (setcdr calculator-stack (cdr (cdr calculator-stack)))) |
| | 1264 | (t ;; no more iterations |
| | 1265 | nil)))) |
| | 1266 | |
| | 1267 | (defun calculator-funcall (f &optional X Y) |
| | 1268 | "If F is a symbol, evaluate (F X Y). |
| | 1269 | Otherwise, it should be a list, evaluate it with X, Y bound to the |
| | 1270 | arguments." |
| | 1271 | ;; remember binary ops for calculator-repR/L |
| | 1272 | (if Y (setq calculator-last-opXY (list f X Y))) |
| | 1273 | (condition-case nil |
| | 1274 | ;; there used to be code here that returns 0 if the result was |
| | 1275 | ;; smaller than calculator-epsilon (1e-15). I don't think this is |
| | 1276 | ;; necessary now. |
| | 1277 | (if (symbolp f) |
| | 1278 | (cond ((and X Y) (funcall f X Y)) |
| | 1279 | (X (funcall f X)) |
| | 1280 | (t (funcall f))) |
| | 1281 | ;; f is an expression |
| | 1282 | (let* ((TX (calculator-truncate X)) |
| | 1283 | (TY (and Y (calculator-truncate Y))) |
| | 1284 | (DX (if calculator-deg (/ (* X pi) 180) X)) |
| | 1285 | (L calculator-saved-list)) |
| | 1286 | (cl-letf (((symbol-function 'F) |
| | 1287 | (lambda (&optional x y) (calculator-funcall f x y))) |
| | 1288 | ((symbol-function 'D) |
| | 1289 | (lambda (x) (if calculator-deg (/ (* x 180) float-pi) x)))) |
| | 1290 | (eval f `((X . ,X) |
| | 1291 | (Y . ,Y) |
| | 1292 | (TX . ,TX) |
| | 1293 | (TY . ,TY) |
| | 1294 | (DX . ,DX) |
| | 1295 | (L . ,L)))))) |
| | 1296 | (error 0))) |
| | 1297 | |
| | 1298 | ;;;--------------------------------------------------------------------- |
| | 1299 | ;;; Input interaction |
| | 1300 | |
| | 1301 | (defun calculator-last-input (&optional keys) |
| | 1302 | "Last char (or event or event sequence) that was read. |
| | 1303 | Optional string argument KEYS will force using it as the keys entered." |
| | 1304 | (let ((inp (or keys (this-command-keys)))) |
| | 1305 | (if (or (stringp inp) (not (arrayp inp))) |
| | 1306 | inp |
| | 1307 | ;; this translates kp-x to x and [tries to] create a string to |
| | 1308 | ;; lookup operators |
| | 1309 | (let* ((i -1) (converted-str (make-string (length inp) ? )) k) |
| | 1310 | ;; converts an array to a string the ops lookup with keypad |
| | 1311 | ;; input |
| | 1312 | (while (< (setq i (1+ i)) (length inp)) |
| | 1313 | (setq k (aref inp i)) |
| | 1314 | ;; if Emacs will someday have a event-key, then this would |
| | 1315 | ;; probably be modified anyway |
| | 1316 | (and (if (fboundp 'key-press-event-p) (key-press-event-p k)) |
| | 1317 | (if (fboundp 'event-key) |
| | 1318 | (and (event-key k) (setq k (event-key k))))) |
| | 1319 | ;; assume all symbols are translatable with an ascii-character |
| | 1320 | (and (symbolp k) |
| | 1321 | (setq k (or (get k 'ascii-character) ? ))) |
| | 1322 | (aset converted-str i k)) |
| | 1323 | converted-str)))) |
| | 1324 | |
| | 1325 | (defun calculator-clear-fragile (&optional op) |
| | 1326 | "Clear the fragile flag if it was set, then maybe reset all. |
| | 1327 | OP is the operator (if any) that caused this call." |
| | 1328 | (if (and calculator-display-fragile |
| | 1329 | (or (not op) |
| | 1330 | (= -1 (calculator-op-arity op)) |
| | 1331 | (= 0 (calculator-op-arity op)))) |
| | 1332 | ;; reset if last calc finished, and now get a num or prefix or 0-ary |
| | 1333 | ;; op |
| | 1334 | (calculator-reset)) |
| | 1335 | (setq calculator-display-fragile nil)) |
| | 1336 | |
| | 1337 | (defun calculator-digit () |
| | 1338 | "Enter a single digit." |
| | 1339 | (interactive) |
| | 1340 | (let ((inp (aref (calculator-last-input) 0))) |
| | 1341 | (if (and (or calculator-display-fragile |
| | 1342 | (not (numberp (car calculator-stack)))) |
| | 1343 | (cond |
| | 1344 | ((not calculator-input-radix) (<= inp ?9)) |
| | 1345 | ((eq calculator-input-radix 'bin) (<= inp ?1)) |
| | 1346 | ((eq calculator-input-radix 'oct) (<= inp ?7)) |
| | 1347 | (t t))) |
| | 1348 | ;; enter digit if starting a new computation or have an op on the |
| | 1349 | ;; stack |
| | 1350 | (progn |
| | 1351 | (calculator-clear-fragile) |
| | 1352 | (let ((digit (upcase (char-to-string inp)))) |
| | 1353 | (if (equal calculator-curnum "0") |
| | 1354 | (setq calculator-curnum nil)) |
| | 1355 | (setq calculator-curnum |
| | 1356 | (concat (or calculator-curnum "") digit))) |
| | 1357 | (calculator-update-display))))) |
| | 1358 | |
| | 1359 | (defun calculator-decimal () |
| | 1360 | "Enter a decimal period." |
| | 1361 | (interactive) |
| | 1362 | (if (and (not calculator-input-radix) |
| | 1363 | (or calculator-display-fragile |
| | 1364 | (not (numberp (car calculator-stack)))) |
| | 1365 | (not (and calculator-curnum |
| | 1366 | (string-match-p "[.eE]" calculator-curnum)))) |
| | 1367 | ;; enter the period on the same condition as a digit, only if no |
| | 1368 | ;; period or exponent entered yet |
| | 1369 | (progn |
| | 1370 | (calculator-clear-fragile) |
| | 1371 | (setq calculator-curnum (concat (or calculator-curnum "0") ".")) |
| | 1372 | (calculator-update-display)))) |
| | 1373 | |
| | 1374 | (defun calculator-exp () |
| | 1375 | "Enter an `E' exponent character, or a digit in hex input mode." |
| | 1376 | (interactive) |
| | 1377 | (if calculator-input-radix |
| | 1378 | (calculator-digit) |
| | 1379 | (if (and (or calculator-display-fragile |
| | 1380 | (not (numberp (car calculator-stack)))) |
| | 1381 | (not (and calculator-curnum |
| | 1382 | (string-match-p "[eE]" calculator-curnum)))) |
| | 1383 | ;; same condition as above, also no E so far |
| | 1384 | (progn |
| | 1385 | (calculator-clear-fragile) |
| | 1386 | (setq calculator-curnum (concat (or calculator-curnum "1") "e")) |
| | 1387 | (calculator-update-display))))) |
| | 1388 | |
| | 1389 | (defun calculator-op (&optional keys) |
| | 1390 | "Enter an operator on the stack, doing all necessary reductions. |
| | 1391 | Optional string argument KEYS will force using it as the keys entered." |
| | 1392 | (interactive) |
| | 1393 | (catch 'op-error |
| | 1394 | (let* ((last-inp (calculator-last-input keys)) |
| | 1395 | (op (assoc last-inp calculator-operators))) |
| | 1396 | (calculator-clear-fragile op) |
| | 1397 | (if (and calculator-curnum (/= (calculator-op-arity op) 0)) |
| | 1398 | (setq calculator-stack |
| | 1399 | (cons (calculator-curnum-value) calculator-stack))) |
| | 1400 | (setq calculator-curnum nil) |
| | 1401 | (if (and (= 2 (calculator-op-arity op)) |
| | 1402 | (not (and calculator-stack |
| | 1403 | (numberp (nth 0 calculator-stack))))) |
| | 1404 | ;; we have a binary operator but no number - search for a prefix |
| | 1405 | ;; version |
| | 1406 | (let ((rest-ops calculator-operators)) |
| | 1407 | (while (not (equal last-inp (car (car rest-ops)))) |
| | 1408 | (setq rest-ops (cdr rest-ops))) |
| | 1409 | (setq op (assoc last-inp (cdr rest-ops))) |
| | 1410 | (if (not (and op (= -1 (calculator-op-arity op)))) |
| | 1411 | ;;(error "Binary operator without a first operand") |
| | 1412 | (progn |
| | 1413 | (calculator-message |
| | 1414 | "Binary operator without a first operand") |
| | 1415 | (throw 'op-error nil))))) |
| | 1416 | (calculator-reduce-stack |
| | 1417 | (cond ((eq (nth 1 op) '\() 10) |
| | 1418 | ((eq (nth 1 op) '\)) 0) |
| | 1419 | (t (calculator-op-prec op)))) |
| | 1420 | (if (or (and (= -1 (calculator-op-arity op)) |
| | 1421 | (numberp (car calculator-stack))) |
| | 1422 | (and (/= (calculator-op-arity op) -1) |
| | 1423 | (/= (calculator-op-arity op) 0) |
| | 1424 | (not (numberp (car calculator-stack))))) |
| | 1425 | ;;(error "Unterminated expression") |
| | 1426 | (progn |
| | 1427 | (calculator-message "Unterminated expression") |
| | 1428 | (throw 'op-error nil))) |
| | 1429 | (setq calculator-stack (cons op calculator-stack)) |
| | 1430 | (calculator-reduce-stack (calculator-op-prec op)) |
| | 1431 | (and (= (length calculator-stack) 1) |
| | 1432 | (numberp (nth 0 calculator-stack)) |
| | 1433 | ;; the display is fragile if it contains only one number |
| | 1434 | (setq calculator-display-fragile t) |
| | 1435 | ;; add number to the saved-list |
| | 1436 | calculator-add-saved |
| | 1437 | (if (= 0 calculator-saved-ptr) |
| | 1438 | (setq calculator-saved-list |
| | 1439 | (cons (car calculator-stack) calculator-saved-list)) |
| | 1440 | (let ((p (nthcdr (1- calculator-saved-ptr) |
| | 1441 | calculator-saved-list))) |
| | 1442 | (setcdr p (cons (car calculator-stack) (cdr p)))))) |
| | 1443 | (calculator-update-display)))) |
| | 1444 | |
| | 1445 | (defun calculator-op-or-exp () |
| | 1446 | "Either enter an operator or a digit. |
| | 1447 | Used with +/- for entering them as digits in numbers like 1e-3 (there is |
| | 1448 | no need for negative numbers since these are handled by unary operators)." |
| | 1449 | (interactive) |
| | 1450 | (if (and (not calculator-display-fragile) |
| | 1451 | calculator-curnum |
| | 1452 | (string-match-p "[eE]$" calculator-curnum)) |
| | 1453 | (calculator-digit) |
| | 1454 | (calculator-op))) |
| | 1455 | |
| | 1456 | ;;;--------------------------------------------------------------------- |
| | 1457 | ;;; Input/output modes (not display) |
| | 1458 | |
| | 1459 | (defun calculator-dec/deg-mode () |
| | 1460 | "Set decimal mode for display & input, if decimal, toggle deg mode." |
| | 1461 | (interactive) |
| | 1462 | (if calculator-curnum |
| | 1463 | (setq calculator-stack |
| | 1464 | (cons (calculator-curnum-value) calculator-stack))) |
| | 1465 | (setq calculator-curnum nil) |
| | 1466 | (if (or calculator-input-radix calculator-output-radix) |
| | 1467 | (progn (setq calculator-input-radix nil) |
| | 1468 | (setq calculator-output-radix nil)) |
| | 1469 | ;; already decimal - toggle degrees mode |
| | 1470 | (setq calculator-deg (not calculator-deg))) |
| | 1471 | (calculator-update-display t)) |
| | 1472 | |
| | 1473 | (defun calculator-radix-mode (&optional keys) |
| | 1474 | "Set input and display radix modes. |
| | 1475 | Optional string argument KEYS will force using it as the keys entered." |
| | 1476 | (interactive) |
| | 1477 | (calculator-radix-input-mode keys) |
| | 1478 | (calculator-radix-output-mode keys)) |
| | 1479 | |
| | 1480 | (defun calculator-radix-input-mode (&optional keys) |
| | 1481 | "Set input radix modes. |
| | 1482 | Optional string argument KEYS will force using it as the keys entered." |
| | 1483 | (interactive) |
| | 1484 | (if calculator-curnum |
| | 1485 | (setq calculator-stack |
| | 1486 | (cons (calculator-curnum-value) calculator-stack))) |
| | 1487 | (setq calculator-curnum nil) |
| | 1488 | (setq calculator-input-radix |
| | 1489 | (let ((inp (calculator-last-input keys))) |
| | 1490 | (cdr (assq (upcase (aref inp (1- (length inp)))) |
| | 1491 | calculator-char-radix)))) |
| | 1492 | (calculator-update-display)) |
| | 1493 | |
| | 1494 | (defun calculator-radix-output-mode (&optional keys) |
| | 1495 | "Set display radix modes. |
| | 1496 | Optional string argument KEYS will force using it as the keys entered." |
| | 1497 | (interactive) |
| | 1498 | (if calculator-curnum |
| | 1499 | (setq calculator-stack |
| | 1500 | (cons (calculator-curnum-value) calculator-stack))) |
| | 1501 | (setq calculator-curnum nil) |
| | 1502 | (setq calculator-output-radix |
| | 1503 | (let ((inp (calculator-last-input keys))) |
| | 1504 | (cdr (assq (upcase (aref inp (1- (length inp)))) |
| | 1505 | calculator-char-radix)))) |
| | 1506 | (calculator-update-display t)) |
| | 1507 | |
| | 1508 | ;;;--------------------------------------------------------------------- |
| | 1509 | ;;; Saved values list |
| | 1510 | |
| | 1511 | (defun calculator-save-on-list () |
| | 1512 | "Evaluate current expression, put result on the saved values list." |
| | 1513 | (interactive) |
| | 1514 | (let ((calculator-add-saved t)) ; marks the result to be added |
| | 1515 | (calculator-enter))) |
| | 1516 | |
| | 1517 | (defun calculator-clear-saved () |
| | 1518 | "Clear the list of saved values in `calculator-saved-list'." |
| | 1519 | (interactive) |
| | 1520 | (setq calculator-saved-list nil) |
| | 1521 | (setq calculator-saved-ptr 0) |
| | 1522 | (calculator-update-display t)) |
| | 1523 | |
| | 1524 | (defun calculator-saved-move (n) |
| | 1525 | "Go N elements up the list of saved values." |
| | 1526 | (interactive) |
| | 1527 | (and calculator-saved-list |
| | 1528 | (or (null calculator-stack) calculator-display-fragile) |
| | 1529 | (progn |
| | 1530 | (setq calculator-saved-ptr |
| | 1531 | (max (min (+ n calculator-saved-ptr) |
| | 1532 | (length calculator-saved-list)) |
| | 1533 | 0)) |
| | 1534 | (if (nth calculator-saved-ptr calculator-saved-list) |
| | 1535 | (setq calculator-stack |
| | 1536 | (list (nth calculator-saved-ptr calculator-saved-list)) |
| | 1537 | calculator-display-fragile t) |
| | 1538 | (calculator-reset)) |
| | 1539 | (calculator-update-display)))) |
| | 1540 | |
| | 1541 | (defun calculator-saved-up () |
| | 1542 | "Go up the list of saved values." |
| | 1543 | (interactive) |
| | 1544 | (calculator-saved-move +1)) |
| | 1545 | |
| | 1546 | (defun calculator-saved-down () |
| | 1547 | "Go down the list of saved values." |
| | 1548 | (interactive) |
| | 1549 | (calculator-saved-move -1)) |
| | 1550 | |
| | 1551 | ;;;--------------------------------------------------------------------- |
| | 1552 | ;;; Misc functions |
| | 1553 | |
| | 1554 | (defun calculator-open-paren () |
| | 1555 | "Equivalents of `(' use this." |
| | 1556 | (interactive) |
| | 1557 | (calculator-op "(")) |
| | 1558 | |
| | 1559 | (defun calculator-close-paren () |
| | 1560 | "Equivalents of `)' use this." |
| | 1561 | (interactive) |
| | 1562 | (calculator-op ")")) |
| | 1563 | |
| | 1564 | (defun calculator-enter () |
| | 1565 | "Evaluate current expression." |
| | 1566 | (interactive) |
| | 1567 | (calculator-op "=")) |
| | 1568 | |
| | 1569 | (defun calculator-backspace () |
| | 1570 | "Backward delete a single digit or a stack element." |
| | 1571 | (interactive) |
| | 1572 | (if calculator-curnum |
| | 1573 | (setq calculator-curnum |
| | 1574 | (if (> (length calculator-curnum) 1) |
| | 1575 | (substring calculator-curnum |
| | 1576 | 0 (1- (length calculator-curnum))) |
| | 1577 | nil)) |
| | 1578 | (setq calculator-stack (cdr calculator-stack))) |
| | 1579 | (calculator-update-display)) |
| | 1580 | |
| | 1581 | (defun calculator-clear () |
| | 1582 | "Clear current number." |
| | 1583 | (interactive) |
| | 1584 | (setq calculator-curnum nil) |
| | 1585 | (cond |
| | 1586 | ;; if the current number is from the saved-list - remove it |
| | 1587 | ((and calculator-display-fragile |
| | 1588 | calculator-saved-list |
| | 1589 | (= (car calculator-stack) |
| | 1590 | (nth calculator-saved-ptr calculator-saved-list))) |
| | 1591 | (if (= 0 calculator-saved-ptr) |
| | 1592 | (setq calculator-saved-list (cdr calculator-saved-list)) |
| | 1593 | (let ((p (nthcdr (1- calculator-saved-ptr) |
| | 1594 | calculator-saved-list))) |
| | 1595 | (setcdr p (cdr (cdr p))) |
| | 1596 | (setq calculator-saved-ptr (1- calculator-saved-ptr)))) |
| | 1597 | (if calculator-saved-list |
| | 1598 | (setq calculator-stack |
| | 1599 | (list (nth calculator-saved-ptr calculator-saved-list))) |
| | 1600 | (calculator-reset))) |
| | 1601 | ;; reset if fragile or double clear |
| | 1602 | ((or calculator-display-fragile (eq last-command this-command)) |
| | 1603 | (calculator-reset))) |
| | 1604 | (calculator-update-display)) |
| | 1605 | |
| | 1606 | (defun calculator-copy () |
| | 1607 | "Copy current number to the `kill-ring'." |
| | 1608 | (interactive) |
| | 1609 | (let ((calculator-displayer |
| | 1610 | (or calculator-copy-displayer calculator-displayer)) |
| | 1611 | (calculator-displayers |
| | 1612 | (if calculator-copy-displayer nil calculator-displayers))) |
| | 1613 | (calculator-enter) |
| | 1614 | ;; remove trailing spaces and an index |
| | 1615 | (let ((s (cdr calculator-stack-display))) |
| | 1616 | (and s |
| | 1617 | (if (string-match "^\\([^ ]+\\) *\\(\\[[0-9/]+\\]\\)? *$" s) |
| | 1618 | (setq s (match-string 1 s))) |
| | 1619 | (kill-new s))))) |
| | 1620 | |
| | 1621 | ;; FIXME this should use register-read-with-preview, but it |
| | 1622 | ;; uses calculator-registers rather than register-alist. |
| | 1623 | (defun calculator-set-register (reg) |
| | 1624 | "Set a register value for REG." |
| | 1625 | (interactive "cRegister to store into: ") |
| | 1626 | (let* ((as (assq reg calculator-registers)) |
| | 1627 | (val (progn (calculator-enter) (car calculator-stack)))) |
| | 1628 | (if as |
| | 1629 | (setcdr as val) |
| | 1630 | (setq calculator-registers |
| | 1631 | (cons (cons reg val) calculator-registers))) |
| | 1632 | (calculator-message "[%c] := %S" reg val))) |
| | 1633 | |
| | 1634 | (defun calculator-put-value (val) |
| | 1635 | "Paste VAL as if entered. |
| | 1636 | Used by `calculator-paste' and `get-register'." |
| | 1637 | (if (and (numberp val) |
| | 1638 | ;; (not calculator-curnum) |
| | 1639 | (or calculator-display-fragile |
| | 1640 | (not (numberp (car calculator-stack))))) |
| | 1641 | (progn |
| | 1642 | (calculator-clear-fragile) |
| | 1643 | (setq calculator-curnum (let ((calculator-displayer "%S")) |
| | 1644 | (calculator-number-to-string val))) |
| | 1645 | (calculator-update-display)))) |
| | 1646 | |
| | 1647 | (defun calculator-paste () |
| | 1648 | "Paste a value from the `kill-ring'." |
| | 1649 | (interactive) |
| | 1650 | (calculator-put-value |
| | 1651 | (let ((str (replace-regexp-in-string |
| | 1652 | "^ *\\(.+[^ ]\\) *$" "\\1" (current-kill 0)))) |
| | 1653 | (and (not calculator-input-radix) |
| | 1654 | calculator-paste-decimals |
| | 1655 | (string-match "\\([0-9]+\\)\\(\\.[0-9]+\\)?\\(e[0-9]+\\)?" |
| | 1656 | str) |
| | 1657 | (or (match-string 1 str) |
| | 1658 | (match-string 2 str) |
| | 1659 | (match-string 3 str)) |
| | 1660 | (setq str (concat (or (match-string 1 str) "0") |
| | 1661 | (or (match-string 2 str) ".0") |
| | 1662 | (or (match-string 3 str) "")))) |
| | 1663 | (ignore-errors (calculator-string-to-number str))))) |
| | 1664 | |
| | 1665 | ;; FIXME this should use register-read-with-preview, but it |
| | 1666 | ;; uses calculator-registers rather than register-alist. |
| | 1667 | (defun calculator-get-register (reg) |
| | 1668 | "Get a value from a register REG." |
| | 1669 | (interactive "cRegister to get value from: ") |
| | 1670 | (calculator-put-value (cdr (assq reg calculator-registers)))) |
| | 1671 | |
| | 1672 | (declare-function electric-describe-mode "ehelp" ()) |
| | 1673 | |
| | 1674 | (defun calculator-help () |
| | 1675 | ;; this is used as the quick reference screen you get with `h' |
| | 1676 | "Quick reference: |
| | 1677 | * numbers/operators/parens/./e - enter expressions |
| | 1678 | + - * / \\(div) %(rem) _(-X,postfix) ;(1/X,postfix) ^(exp) L(og) |
| | 1679 | Q(sqrt) !(fact) S(in) C(os) T(an) |(or) #(xor) &(and) ~(not) |
| | 1680 | * >/< repeats last binary operation with its 2nd (1st) arg as postfix op |
| | 1681 | * I inverses next trig function * '/\"/{} - display/display args |
| | 1682 | * D - switch to all-decimal, or toggle deg/rad mode |
| | 1683 | * B/O/H/X - binary/octal/hex mode for i/o (X is a shortcut for H) |
| | 1684 | * i/o - prefix for d/b/o/x - set only input/output modes |
| | 1685 | * enter/= - evaluate current expr. * s/g - set/get a register |
| | 1686 | * space - evaluate & save on list * l/v - list total/average |
| | 1687 | * up/down/C-p/C-n - browse saved * C-delete - clear all saved |
| | 1688 | * C-insert - copy whole expr. * C-return - evaluate, copy, exit |
| | 1689 | * insert - paste a number * backspace- delete backwards |
| | 1690 | * delete - clear argument or list value or whole expression (twice) |
| | 1691 | * escape/q - exit." |
| | 1692 | (interactive) |
| | 1693 | (if (eq last-command 'calculator-help) |
| | 1694 | (let ((mode-name "Calculator") |
| | 1695 | (major-mode 'calculator-mode) |
| | 1696 | (g-map (current-global-map)) |
| | 1697 | (win (selected-window))) |
| | 1698 | (require 'ehelp) |
| | 1699 | (if calculator-electric-mode |
| | 1700 | (use-global-map calculator-saved-global-map)) |
| | 1701 | (if (or (not calculator-electric-mode) |
| | 1702 | ;; XEmacs has a problem with electric-describe-mode |
| | 1703 | (featurep 'xemacs)) |
| | 1704 | (describe-mode) |
| | 1705 | (electric-describe-mode)) |
| | 1706 | (if calculator-electric-mode |
| | 1707 | (use-global-map g-map)) |
| | 1708 | (select-window win) ; these are for XEmacs (also below) |
| | 1709 | (message nil)) |
| | 1710 | (let ((one (one-window-p t)) |
| | 1711 | (win (selected-window)) |
| | 1712 | (help-buf (get-buffer-create "*Help*"))) |
| | 1713 | (save-window-excursion |
| | 1714 | (with-output-to-temp-buffer "*Help*" |
| | 1715 | (princ (documentation 'calculator-help))) |
| | 1716 | (if one |
| | 1717 | (shrink-window-if-larger-than-buffer |
| | 1718 | (get-buffer-window help-buf))) |
| | 1719 | (message |
| | 1720 | "`%s' again for more help, any other key continues normally." |
| | 1721 | (calculator-last-input)) |
| | 1722 | (select-window win) |
| | 1723 | (sit-for 360)) |
| | 1724 | (select-window win)))) |
| | 1725 | |
| | 1726 | (defun calculator-quit () |
| | 1727 | "Quit calculator." |
| | 1728 | (interactive) |
| | 1729 | (set-buffer calculator-buffer) |
| | 1730 | (let ((inhibit-read-only t)) (erase-buffer)) |
| | 1731 | (unless calculator-electric-mode |
| | 1732 | (ignore-errors |
| | 1733 | (while (get-buffer-window calculator-buffer) |
| | 1734 | (delete-window (get-buffer-window calculator-buffer)))) |
| | 1735 | (kill-buffer calculator-buffer)) |
| | 1736 | (setq calculator-buffer nil) |
| | 1737 | (message "Calculator done.") |
| | 1738 | (if calculator-electric-mode (throw 'calculator-done nil))) |
| | 1739 | |
| | 1740 | (defun calculator-save-and-quit () |
| | 1741 | "Quit the calculator, saving the result on the `kill-ring'." |
| | 1742 | (interactive) |
| | 1743 | (calculator-enter) |
| | 1744 | (calculator-copy) |
| | 1745 | (calculator-quit)) |
| | 1746 | |
| | 1747 | (defun calculator-repR (x) |
| | 1748 | "Repeat the last binary operation with its second argument and X. |
| | 1749 | To use this, apply a binary operator (evaluate it), then call this." |
| | 1750 | (if calculator-last-opXY |
| | 1751 | ;; avoid rebinding calculator-last-opXY |
| | 1752 | (let ((calculator-last-opXY calculator-last-opXY)) |
| | 1753 | (calculator-funcall |
| | 1754 | (car calculator-last-opXY) x (nth 2 calculator-last-opXY))) |
| | 1755 | x)) |
| | 1756 | |
| | 1757 | (defun calculator-repL (x) |
| | 1758 | "Repeat the last binary operation with its first argument and X. |
| | 1759 | To use this, apply a binary operator (evaluate it), then call this." |
| | 1760 | (if calculator-last-opXY |
| | 1761 | ;; avoid rebinding calculator-last-opXY |
| | 1762 | (let ((calculator-last-opXY calculator-last-opXY)) |
| | 1763 | (calculator-funcall |
| | 1764 | (car calculator-last-opXY) (nth 1 calculator-last-opXY) x)) |
| | 1765 | x)) |
| | 1766 | |
| | 1767 | (defun calculator-integer-p (x) |
| | 1768 | "Non-nil if X is equal to an integer." |
| | 1769 | (ignore-errors (= x (ftruncate x)))) |
| | 1770 | |
| | 1771 | (defun calculator-expt (x y) |
| | 1772 | "Compute X^Y, dealing with errors appropriately." |
| | 1773 | (condition-case nil |
| | 1774 | (expt x y) |
| | 1775 | (domain-error 0.0e+NaN) |
| | 1776 | (range-error |
| | 1777 | (cond |
| | 1778 | ((and (< x 1.0) (> x -1.0)) |
| | 1779 | ;; For small x, the range error comes from large y. |
| | 1780 | 0.0) |
| | 1781 | ((and (> x 0.0) (< y 0.0)) |
| | 1782 | ;; For large positive x and negative y, the range error |
| | 1783 | ;; comes from large negative y. |
| | 1784 | 0.0) |
| | 1785 | ((and (> x 0.0) (> y 0.0)) |
| | 1786 | ;; For large positive x and positive y, the range error |
| | 1787 | ;; comes from large y. |
| | 1788 | 1.0e+INF) |
| | 1789 | ;; For the rest, x must be large and negative. |
| | 1790 | ;; The range errors come from large integer y. |
| | 1791 | ((< y 0.0) |
| | 1792 | 0.0) |
| | 1793 | ((eq (logand (truncate y) 1) 1) ; expansion of cl `oddp' |
| | 1794 | ;; If y is odd |
| | 1795 | -1.0e+INF) |
| | 1796 | (t |
| | 1797 | ;; |
| | 1798 | 1.0e+INF))) |
| | 1799 | (error 0.0e+NaN))) |
| | 1800 | |
| | 1801 | (defun calculator-fact (x) |
| | 1802 | "Simple factorial of X." |
| | 1803 | (if (and (>= x 0) |
| | 1804 | (calculator-integer-p x)) |
| | 1805 | (if (= (calculator-expt (/ x 3.0) x) 1.0e+INF) |
| | 1806 | 1.0e+INF |
| | 1807 | (let ((r (if (<= x 10) 1 1.0))) |
| | 1808 | (while (> x 0) |
| | 1809 | (setq r (* r (truncate x))) |
| | 1810 | (setq x (1- x))) |
| | 1811 | (+ 0.0 r))) |
| | 1812 | (if (= x 1.0e+INF) |
| | 1813 | x |
| | 1814 | 0.0e+NaN))) |
| | 1815 | |
| | 1816 | (defun calculator-truncate (n) |
| | 1817 | "Truncate N, return 0 in case of overflow." |
| | 1818 | (condition-case nil (truncate n) (error 0))) |
| | 1819 | |
| | 1820 | |
| | 1821 | (provide 'calculator) |
| | 1822 | |
| | 1823 | ;;; calculator.el ends here |
HCoop / bpt / emacs.git / blame_incremental