1 ;;; calc-mode.el --- calculator modes for Calc
3 ;; Copyright (C) 1990, 1991, 1992, 1993, 2001 Free Software Foundation, Inc.
5 ;; Author: David Gillespie <daveg@synaptics.com>
6 ;; Maintainer: Jay Belanger <belanger@truman.edu>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is distributed in the hope that it will be useful,
11 ;; but WITHOUT ANY WARRANTY. No author or distributor
12 ;; accepts responsibility to anyone for the consequences of using it
13 ;; or for whether it serves any particular purpose or works at all,
14 ;; unless he says so in writing. Refer to the GNU Emacs General Public
15 ;; License for full details.
17 ;; Everyone is granted permission to copy, modify and redistribute
18 ;; GNU Emacs, but only under the conditions described in the
19 ;; GNU Emacs General Public License. A copy of this license is
20 ;; supposed to have been given to you along with GNU Emacs so you
21 ;; can know your rights and responsibilities. It should be in a
22 ;; file named COPYING. Among other things, the copyright notice
23 ;; and this notice must be preserved on all copies.
29 ;; This file is autoloaded from calc-ext.el.
34 (defun calc-line-numbering (n)
37 (message (if (calc-change-mode 'calc-line-numbering n t t)
38 "Displaying stack level numbers"
39 "Hiding stack level numbers"))))
41 (defun calc-line-breaking (n)
45 (and (> (setq n (prefix-numeric-value n)) 0)
48 (not calc-line-breaking)))
49 (if (calc-change-mode 'calc-line-breaking n t)
50 (if (integerp calc-line-breaking)
51 (message "Breaking lines longer than %d characters" n)
52 (message "Breaking long lines in Stack display"))
53 (message "Not breaking long lines in Stack display"))))
56 (defun calc-left-justify (n)
59 (and n (setq n (prefix-numeric-value n)))
60 (calc-change-mode '(calc-display-just calc-display-origin)
63 (message "Displaying stack entries indented by %d" n)
64 (message "Displaying stack entries left-justified"))))
66 (defun calc-center-justify (n)
69 (and n (setq n (prefix-numeric-value n)))
70 (calc-change-mode '(calc-display-just calc-display-origin)
73 (message "Displaying stack entries centered on column %d" n)
74 (message "Displaying stack entries centered in window"))))
76 (defun calc-right-justify (n)
79 (and n (setq n (prefix-numeric-value n)))
80 (calc-change-mode '(calc-display-just calc-display-origin)
83 (message "Displaying stack entries right-justified to column %d" n)
84 (message "Displaying stack entries right-justified in window"))))
86 (defun calc-left-label (s)
87 (interactive "sLefthand label: ")
90 (setq s (concat s " ")))
91 (calc-change-mode 'calc-left-label s t)))
93 (defun calc-right-label (s)
94 (interactive "sRighthand label: ")
97 (setq s (concat " " s)))
98 (calc-change-mode 'calc-right-label s t)))
100 (defun calc-auto-why (n)
105 (setq n (prefix-numeric-value n))
106 (if (<= n 0) (setq n nil)
107 (if (> n 1) (setq n t))))
108 (setq n (and (not (eq calc-auto-why t)) (if calc-auto-why t 1))))
109 (calc-change-mode 'calc-auto-why n nil)
111 (message "User must press `w' to explain unsimplified results"))
113 (message "Automatically doing `w' to explain unsimplified results"))
115 (message "Automatically doing `w' only for unusual messages")))))
117 (defun calc-group-digits (n)
122 (setq n (prefix-numeric-value n))
123 (cond ((or (> n 0) (< n -1)))
127 (setq n calc-group-digits))))
128 (setq n (not calc-group-digits)))
129 (calc-change-mode 'calc-group-digits n t)
131 (message "Grouping is off"))
133 (message "Grouping every %d digits" (math-abs n)))
135 (message "Grouping is on")))))
137 (defun calc-group-char (ch)
138 (interactive "cGrouping character: ")
141 (error "Control characters not allowed for grouping"))
144 (setq ch (char-to-string ch)))
145 (calc-change-mode 'calc-group-char ch calc-group-digits)
146 (message "Digit grouping character is \"%s\"" ch)))
148 (defun calc-point-char (ch)
149 (interactive "cCharacter to use as decimal point: ")
152 (error "Control characters not allowed as decimal point"))
153 (calc-change-mode 'calc-point-char (char-to-string ch) t)
154 (message "Decimal point character is \"%c\"" ch)))
156 (defun calc-normal-notation (n)
159 (calc-change-mode 'calc-float-format
160 (let* ((val (if n (prefix-numeric-value n) 0))
161 (mode (/ (+ val 5000) 10000)))
162 (if (or (< val -5000) (> mode 3))
163 (error "Prefix out of range"))
164 (setq n (list (aref [float sci eng fix] mode)
165 (- (% (+ val 5000) 10000) 5000))))
168 (message "Displaying floating-point numbers normally")
171 "Displaying floating-point numbers with %d significant digits"
173 (message "Displaying floating-point numbers with (precision%d)"
176 (defun calc-fix-notation (n)
177 (interactive "NDigits after decimal point: ")
179 (calc-change-mode 'calc-float-format
180 (setq n (list 'fix (if n (prefix-numeric-value n) 0)))
182 (message "Displaying floats with %d digits after decimal"
183 (math-abs (nth 1 n)))))
185 (defun calc-sci-notation (n)
188 (calc-change-mode 'calc-float-format
189 (setq n (list 'sci (if n (prefix-numeric-value n) 0)))
192 (message "Displaying floats in scientific notation")
194 (message "Displaying scientific notation with %d significant digits"
196 (message "Displaying scientific notation with (precision%d)"
199 (defun calc-eng-notation (n)
202 (calc-change-mode 'calc-float-format
203 (setq n (list 'eng (if n (prefix-numeric-value n) 0)))
206 (message "Displaying floats in engineering notation")
208 (message "Displaying engineering notation with %d significant digits"
210 (message "Displaying engineering notation with (precision%d)"
214 (defun calc-truncate-stack (n &optional rel)
217 (let ((oldtop calc-stack-top)
218 (newtop calc-stack-top))
219 (calc-record-undo (list 'set 'saved-stack-top calc-stack-top))
220 (let ((calc-stack-top 0)
221 (nn (prefix-numeric-value n)))
226 (setq nn (+ oldtop nn))
228 (setq nn (+ nn (calc-stack-size)))
232 (if (> nn (calc-stack-size))
235 (max 1 (calc-locate-cursor-element (point)))))
236 (if (= newtop oldtop)
238 (calc-pop-stack 1 oldtop t)
239 (calc-push-list '(top-of-stack) newtop)
240 (if calc-line-numbering
242 (calc-record-undo (list 'set 'saved-stack-top 0))
243 (setq calc-stack-top newtop))))
245 (defun calc-truncate-up (n)
247 (calc-truncate-stack n t))
249 (defun calc-truncate-down (n)
251 (calc-truncate-stack (- n) t))
253 (defun calc-display-raw (arg)
256 (setq calc-display-raw (if calc-display-raw nil (if arg 0 t)))
259 (message "Press d ' again to cancel \"raw\" display mode"))))
266 (defun calc-save-modes ()
270 (vals (mapcar (function (lambda (v) (symbol-value (car v))))
271 calc-mode-var-list)))
272 (unless calc-settings-file
273 (error "No `calc-settings-file' specified"))
274 (set-buffer (find-file-noselect (substitute-in-file-name
275 calc-settings-file)))
276 (goto-char (point-min))
277 (if (and (search-forward ";;; Mode settings stored by Calc" nil t)
281 (search-forward "\n;;; End of mode settings" nil t)))
285 (delete-region pos (point)))
286 (goto-char (point-max))
289 (insert ";;; Mode settings stored by Calc on " (current-time-string) "\n")
290 (let ((list calc-mode-var-list))
292 (let* ((v (car (car list)))
293 (def (nth 1 (car list)))
297 (insert "(setq " (symbol-name v) " ")
298 (if (and (or (listp val)
300 (not (memq val '(nil t))))
302 (insert (prin1-to-string val) ")\n"))))
303 (setq list (cdr list)
305 (run-hooks 'calc-mode-save-hook)
306 (insert ";;; End of mode settings\n")
309 (defun calc-settings-file-name (name &optional arg)
311 (list (read-file-name (format "Settings file name (normally %s): "
312 (abbreviate-file-name calc-settings-file)))
315 (setq arg (if arg (prefix-numeric-value arg) 0))
316 (if (string-equal (file-name-nondirectory name) "")
317 (message "Calc settings file is \"%s\"" calc-settings-file)
318 (if (< (math-abs arg) 2)
319 (let ((list calc-mode-var-list))
321 (set (car (car list)) (nth 1 (car list)))
322 (setq list (cdr list)))))
323 (setq calc-settings-file name)
326 (equal user-init-file calc-settings-file)
330 (message "New file")))))
332 (defun math-get-modes-vec ()
338 (+ (if (<= (nth 1 calc-float-format) 0)
339 (+ calc-internal-prec (nth 1 calc-float-format))
340 (nth 1 calc-float-format))
341 (cdr (assq (car calc-float-format)
342 '((float . 0) (sci . 10000)
343 (eng . 20000) (fix . 30000)))))
344 (cond ((eq calc-angle-mode 'rad) 2)
345 ((eq calc-angle-mode 'hms) 3)
347 (if calc-symbolic-mode 1 0)
348 (if calc-prefer-frac 1 0)
349 (if (eq calc-complex-mode 'polar) 1 0)
350 (cond ((eq calc-matrix-mode 'scalar) 0)
351 ((eq calc-matrix-mode 'matrix) -2)
354 (cond ((eq calc-simplify-mode 'none) -1)
355 ((eq calc-simplify-mode 'num) 0)
356 ((eq calc-simplify-mode 'binary) 2)
357 ((eq calc-simplify-mode 'alg) 3)
358 ((eq calc-simplify-mode 'ext) 4)
359 ((eq calc-simplify-mode 'units) 5)
361 (cond ((eq calc-infinite-mode 1) 0)
362 (calc-infinite-mode 1)
365 (defun calc-get-modes (n)
368 (let ((modes (math-get-modes-vec)))
369 (calc-enter-result 0 "mode"
371 (if (and (>= (setq n (prefix-numeric-value n)) 1)
372 (< n (length modes)))
374 (error "Prefix out of range"))
377 (defun calc-shift-prefix (arg)
380 (setq calc-shift-prefix (if arg
381 (> (prefix-numeric-value arg) 0)
382 (not calc-shift-prefix)))
384 (message (if calc-shift-prefix
385 "Prefix keys are now case-insensitive"
386 "Prefix keys must be unshifted (except V, Z)"))))
388 (defun calc-mode-record-mode (n)
391 (calc-change-mode 'calc-mode-save-mode
393 (cond ((not calc-embedded-info)
394 (if (eq calc-mode-save-mode 'save)
396 ((eq calc-mode-save-mode 'local) 'edit)
397 ((eq calc-mode-save-mode 'edit) 'perm)
398 ((eq calc-mode-save-mode 'perm) 'global)
399 ((eq calc-mode-save-mode 'global) 'save)
400 ((eq calc-mode-save-mode 'save) nil)
401 ((eq calc-mode-save-mode nil) 'local)))
402 ((= (setq n (prefix-numeric-value n)) 0) nil)
408 (message (cond ((and (eq calc-mode-save-mode 'local) calc-embedded-info)
409 "Recording mode changes with [calc-mode: ...]")
410 ((eq calc-mode-save-mode 'edit)
411 "Recording mode changes with [calc-edit-mode: ...]")
412 ((eq calc-mode-save-mode 'perm)
413 "Recording mode changes with [calc-perm-mode: ...]")
414 ((eq calc-mode-save-mode 'global)
415 "Recording mode changes with [calc-global-mode: ...]")
416 ((eq calc-mode-save-mode 'save)
417 (format "Recording mode changes in \"%s\""
420 "Not recording mode changes permanently")))))
422 (defun calc-total-algebraic-mode (flag)
425 (if (eq calc-algebraic-mode 'total)
426 (calc-algebraic-mode nil)
427 (calc-change-mode '(calc-algebraic-mode calc-incomplete-algebraic-mode)
429 (use-local-map calc-alg-map)
431 "All keys begin algebraic entry; use Meta (ESC) for Calc keys"))))
433 (defun calc-algebraic-mode (flag)
437 (calc-change-mode '(calc-algebraic-mode
438 calc-incomplete-algebraic-mode)
439 (list nil (not calc-incomplete-algebraic-mode)))
440 (calc-change-mode '(calc-algebraic-mode calc-incomplete-algebraic-mode)
441 (list (not calc-algebraic-mode) nil)))
442 (use-local-map calc-mode-map)
443 (message (if calc-algebraic-mode
444 "Numeric keys and ( and [ begin algebraic entry"
445 (if calc-incomplete-algebraic-mode
446 "Only ( and [ begin algebraic entry"
447 "No keys except ' and $ begin algebraic entry")))))
449 (defun calc-symbolic-mode (n)
453 (message (if (calc-change-mode 'calc-symbolic-mode n nil t)
454 "Inexact computations like sqrt(2) are deferred"
455 "Numerical computations are always done immediately"))))
457 (defun calc-infinite-mode (n)
462 (calc-change-mode 'calc-infinite-mode 1)
463 (message "Computations like 1 / 0 produce \"inf\""))
464 (message (if (calc-change-mode 'calc-infinite-mode n nil t)
465 "Computations like 1 / 0 produce \"uinf\""
466 "Computations like 1 / 0 are left unsimplified")))))
468 (defun calc-matrix-mode (arg)
471 (calc-change-mode 'calc-matrix-mode
472 (cond ((eq arg 0) 'scalar)
473 ((< (prefix-numeric-value arg) 1)
474 (and (< (prefix-numeric-value arg) -1) 'matrix))
475 (arg (prefix-numeric-value arg))
476 ((eq calc-matrix-mode 'matrix) 'scalar)
477 ((eq calc-matrix-mode 'scalar) nil)
479 (if (integerp calc-matrix-mode)
480 (message "Variables are assumed to be %dx%d matrices"
481 calc-matrix-mode calc-matrix-mode)
482 (message (if (eq calc-matrix-mode 'matrix)
483 "Variables are assumed to be matrices"
485 "Variables are assumed to be scalars (non-matrices)"
486 "Variables are not assumed to be matrix or scalar"))))))
488 (defun calc-set-simplify-mode (mode arg msg)
489 (calc-change-mode 'calc-simplify-mode
491 (and (> (prefix-numeric-value arg) 0)
493 (and (not (eq calc-simplify-mode mode))
495 (message (if (eq calc-simplify-mode mode)
497 "Default simplifications enabled")))
499 (defun calc-no-simplify-mode (arg)
502 (calc-set-simplify-mode 'none arg
503 "All default simplifications are disabled")))
505 (defun calc-num-simplify-mode (arg)
508 (calc-set-simplify-mode 'num arg
509 "Default simplifications apply only if arguments are numeric")))
511 (defun calc-default-simplify-mode (arg)
515 (calc-set-simplify-mode
516 nil nil "Usual default simplifications are enabled")))
517 ((= arg 0) (calc-num-simplify-mode 1))
518 ((< arg 0) (calc-no-simplify-mode 1))
519 ((= arg 2) (calc-bin-simplify-mode 1))
520 ((= arg 3) (calc-alg-simplify-mode 1))
521 ((= arg 4) (calc-ext-simplify-mode 1))
522 ((= arg 5) (calc-units-simplify-mode 1))
523 (t (error "Prefix argument out of range"))))
525 (defun calc-bin-simplify-mode (arg)
528 (calc-set-simplify-mode 'binary arg
529 (format "Binary simplification occurs by default (word size=%d)"
532 (defun calc-alg-simplify-mode (arg)
535 (calc-set-simplify-mode 'alg arg
536 "Algebraic simplification occurs by default")))
538 (defun calc-ext-simplify-mode (arg)
541 (calc-set-simplify-mode 'ext arg
542 "Extended algebraic simplification occurs by default")))
544 (defun calc-units-simplify-mode (arg)
547 (calc-set-simplify-mode 'units arg
548 "Units simplification occurs by default")))
550 (defun calc-auto-recompute (arg)
553 (calc-change-mode 'calc-auto-recompute arg nil t)
554 (calc-refresh-evaltos)
555 (message (if calc-auto-recompute
556 "Automatically recomputing `=>' forms when necessary"
557 "Not recomputing `=>' forms automatically"))))
559 (defun calc-working (n)
563 (calc-pop-push-record 0 "work"
564 (cond ((eq calc-display-working-message t) 1)
565 (calc-display-working-message 2)
567 ((eq n 2) (calc-change-mode 'calc-display-working-message 'lots))
568 ((eq n 0) (calc-change-mode 'calc-display-working-message nil))
569 ((eq n 1) (calc-change-mode 'calc-display-working-message t)))
570 (cond ((eq calc-display-working-message t)
571 (message "\"Working...\" messages enabled"))
572 (calc-display-working-message
573 (message "Detailed \"Working...\" messages enabled"))
575 (message "\"Working...\" messages disabled")))))
577 (defun calc-always-load-extensions ()
580 (if (setq calc-always-load-extensions (not calc-always-load-extensions))
581 (message "Always loading extensions package")
582 (message "Loading extensions package on demand only"))))
585 (defun calc-matrix-left-justify ()
588 (calc-change-mode 'calc-matrix-just nil t)
589 (message "Matrix elements will be left-justified in columns")))
591 (defun calc-matrix-center-justify ()
594 (calc-change-mode 'calc-matrix-just 'center t)
595 (message "Matrix elements will be centered in columns")))
597 (defun calc-matrix-right-justify ()
600 (calc-change-mode 'calc-matrix-just 'right t)
601 (message "Matrix elements will be right-justified in columns")))
603 (defun calc-full-vectors (n)
606 (message (if (calc-change-mode 'calc-full-vectors n t t)
607 "Displaying long vectors in full"
608 "Displaying long vectors in [a, b, c, ..., z] notation"))))
610 (defun calc-full-trail-vectors (n)
613 (message (if (calc-change-mode 'calc-full-trail-vectors n nil t)
614 "Recording long vectors in full"
615 "Recording long vectors in [a, b, c, ..., z] notation"))))
617 (defun calc-break-vectors (n)
620 (message (if (calc-change-mode 'calc-break-vectors n t t)
621 "Displaying vector elements one-per-line"
622 "Displaying vector elements all on one line"))))
624 (defun calc-vector-commas ()
627 (if (calc-change-mode 'calc-vector-commas (if calc-vector-commas nil ",") t)
628 (message "Separating vector elements with \",\"")
629 (message "Separating vector elements with spaces"))))
631 (defun calc-vector-brackets ()
634 (if (calc-change-mode 'calc-vector-brackets
635 (if (equal calc-vector-brackets "[]") nil "[]") t)
636 (message "Surrounding vectors with \"[]\"")
637 (message "Not surrounding vectors with brackets"))))
639 (defun calc-vector-braces ()
642 (if (calc-change-mode 'calc-vector-brackets
643 (if (equal calc-vector-brackets "{}") nil "{}") t)
644 (message "Surrounding vectors with \"{}\"")
645 (message "Not surrounding vectors with brackets"))))
647 (defun calc-vector-parens ()
650 (if (calc-change-mode 'calc-vector-brackets
651 (if (equal calc-vector-brackets "()") nil "()") t)
652 (message "Surrounding vectors with \"()\"")
653 (message "Not surrounding vectors with brackets"))))
655 (defun calc-matrix-brackets (arg)
656 (interactive "sCode letters (R, O, C, P): ")
658 (let ((code (append (and (string-match "[rR]" arg) '(R))
659 (and (string-match "[oO]" arg) '(O))
660 (and (string-match "[cC]" arg) '(C))
661 (and (string-match "[pP]" arg) '(P))))
662 (bad (string-match "[^rRoOcCpP ]" arg)))
664 (error "Unrecognized character: %c" (aref arg bad)))
665 (calc-change-mode 'calc-matrix-brackets code t))))
669 ;;; arch-tag: ecc70eea-c712-43f2-9085-4205e58d6ddf
670 ;;; calc-mode.el ends here