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|
;;; calc-mode.el --- calculator modes for Calc -*- lexical-binding:t -*-
;; Copyright (C) 1990-1993, 2001-2025 Free Software Foundation, Inc.
;; Author: David Gillespie <daveg@synaptics.com>
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
;; This file is autoloaded from calc-ext.el.
(require 'calc-ext)
(require 'calc-macs)
;; Declare functions which are defined elsewhere.
(declare-function calc-embedded-save-original-modes "calc-embed" ())
(defun calc-line-numbering (n)
(interactive "P")
(calc-wrapper
(message (if (calc-change-mode 'calc-line-numbering n t t)
"Displaying stack level numbers"
"Hiding stack level numbers"))))
(defun calc-line-breaking (n)
(interactive "P")
(calc-wrapper
(setq n (if n
(and (> (setq n (prefix-numeric-value n)) 0)
(or (< n 5)
n))
(not calc-line-breaking)))
(if (calc-change-mode 'calc-line-breaking n t)
(if (integerp calc-line-breaking)
(message "Breaking lines longer than %d characters" n)
(message "Breaking long lines in Stack display"))
(message "Not breaking long lines in Stack display"))))
(defun calc-left-justify (n)
(interactive "P")
(calc-wrapper
(and n (setq n (prefix-numeric-value n)))
(calc-change-mode '(calc-display-just calc-display-origin)
(list nil n) t)
(if n
(message "Displaying stack entries indented by %d" n)
(message "Displaying stack entries left-justified"))))
(defun calc-center-justify (n)
(interactive "P")
(calc-wrapper
(and n (setq n (prefix-numeric-value n)))
(calc-change-mode '(calc-display-just calc-display-origin)
(list 'center n) t)
(if n
(message "Displaying stack entries centered on column %d" n)
(message "Displaying stack entries centered in window"))))
(defun calc-right-justify (n)
(interactive "P")
(calc-wrapper
(and n (setq n (prefix-numeric-value n)))
(calc-change-mode '(calc-display-just calc-display-origin)
(list 'right n) t)
(if n
(message "Displaying stack entries right-justified to column %d" n)
(message "Displaying stack entries right-justified in window"))))
(defun calc-left-label (s)
(interactive "sLefthand label: ")
(calc-wrapper
(or (equal s "")
(setq s (concat s " ")))
(calc-change-mode 'calc-left-label s t)))
(defun calc-right-label (s)
(interactive "sRighthand label: ")
(calc-wrapper
(or (equal s "")
(setq s (concat " " s)))
(calc-change-mode 'calc-right-label s t)))
(defun calc-auto-why (n)
(interactive "P")
(calc-wrapper
(if n
(progn
(setq n (prefix-numeric-value n))
(if (<= n 0) (setq n nil)
(if (> n 1) (setq n t))))
(setq n (and (not (eq calc-auto-why t)) (if calc-auto-why t 1))))
(calc-change-mode 'calc-auto-why n nil)
(cond ((null n)
(message (substitute-command-keys
"User must press \\`w' to explain unsimplified results")))
((eq n t)
(message (substitute-command-keys
"Automatically doing \\`w' to explain unsimplified results")))
(t
(message (substitute-command-keys
"Automatically doing \\`w' only for unusual messages"))))))
(defun calc-group-digits (n)
(interactive "P")
(calc-wrapper
(if n
(progn
(setq n (prefix-numeric-value n))
(cond ((or (> n 0) (< n -1)))
((= n -1)
(setq n nil))
(t
(setq n calc-group-digits))))
(setq n (not calc-group-digits)))
(calc-change-mode 'calc-group-digits n t)
(cond ((null n)
(message "Grouping is off"))
((integerp n)
(message "Grouping every %d digits" (math-abs n)))
(t
(message "Grouping is on")))))
(defun calc-group-char (ch)
(interactive "cGrouping character: ")
(calc-wrapper
(or (>= ch 32)
(error "Control characters not allowed for grouping"))
(if (= ch ?\\)
(setq ch "\\,")
(setq ch (char-to-string ch)))
(calc-change-mode 'calc-group-char ch calc-group-digits)
(message "Digit grouping character is \"%s\"" ch)))
(defun calc-point-char (ch)
(interactive "cCharacter to use as decimal point: ")
(calc-wrapper
(or (>= ch 32)
(error "Control characters not allowed as decimal point"))
(calc-change-mode 'calc-point-char (char-to-string ch) t)
(message "Decimal point character is \"%c\"" ch)))
(defun calc-normal-notation (n)
(interactive "P")
(calc-wrapper
(calc-change-mode 'calc-float-format
(let* ((val (if n (prefix-numeric-value n) 0))
(mode (/ (+ val 5000) 10000)))
(if (or (< val -5000) (> mode 3))
(error "Prefix out of range"))
(setq n (list (aref [float sci eng fix] mode)
(- (% (+ val 5000) 10000) 5000))))
t)
(if (eq (nth 1 n) 0)
(message "Displaying floating-point numbers normally")
(if (> (nth 1 n) 0)
(message
"Displaying floating-point numbers with %d significant digits"
(nth 1 n))
(message "Displaying floating-point numbers with (precision%d)"
(nth 1 n))))))
(defun calc-fix-notation (n)
(interactive "NDigits after decimal point: ")
(calc-wrapper
(calc-change-mode 'calc-float-format
(setq n (list 'fix (if n (prefix-numeric-value n) 0)))
t)
(message "Displaying floats with %d digits after decimal"
(math-abs (nth 1 n)))))
(defun calc-sci-notation (n)
(interactive "P")
(calc-wrapper
(calc-change-mode 'calc-float-format
(setq n (list 'sci (if n (prefix-numeric-value n) 0)))
t)
(if (eq (nth 1 n) 0)
(message "Displaying floats in scientific notation")
(if (> (nth 1 n) 0)
(message "Displaying scientific notation with %d significant digits"
(nth 1 n))
(message "Displaying scientific notation with (precision%d)"
(nth 1 n))))))
(defun calc-eng-notation (n)
(interactive "P")
(calc-wrapper
(calc-change-mode 'calc-float-format
(setq n (list 'eng (if n (prefix-numeric-value n) 0)))
t)
(if (eq (nth 1 n) 0)
(message "Displaying floats in engineering notation")
(if (> (nth 1 n) 0)
(message "Displaying engineering notation with %d significant digits"
(nth 1 n))
(message "Displaying engineering notation with (precision%d)"
(nth 1 n))))))
(defun calc-truncate-stack (n &optional rel)
(interactive "P")
(calc-wrapper
(let ((oldtop calc-stack-top)
(newtop calc-stack-top))
(calc-record-undo (list 'set 'saved-stack-top calc-stack-top))
(let ((calc-stack-top 0)
(nn (prefix-numeric-value n)))
(setq newtop
(if n
(progn
(if rel
(setq nn (+ oldtop nn))
(if (< nn 0)
(setq nn (+ nn (calc-stack-size)))
(setq nn (1+ nn))))
(if (< nn 1)
1
(if (> nn (calc-stack-size))
(calc-stack-size)
nn)))
(max 1 (calc-locate-cursor-element (point)))))
(if (= newtop oldtop)
()
(calc-pop-stack 1 oldtop t)
(calc-push-list '(top-of-stack) newtop)
(if calc-line-numbering
(calc-refresh))))
(calc-record-undo (list 'set 'saved-stack-top 0))
(setq calc-stack-top newtop))))
(defun calc-truncate-up (n)
(interactive "p")
(calc-truncate-stack n t))
(defun calc-truncate-down (n)
(interactive "p")
(calc-truncate-stack (- n) t))
(defun calc-display-raw (arg)
(interactive "P")
(calc-wrapper
(setq calc-display-raw (if calc-display-raw nil (if arg 0 t)))
(calc-do-refresh)
(if calc-display-raw
(message "%s" "Press d ' again to cancel \"raw\" display mode"))))
;;; Mode commands.
(defun calc-save-modes ()
(interactive)
(calc-wrapper
(let (pos
(vals (mapcar (lambda (v) (symbol-value (car v)))
calc-mode-var-list)))
(unless calc-settings-file
(error "No `calc-settings-file' specified"))
(set-buffer (find-file-noselect (substitute-in-file-name
calc-settings-file)))
(goto-char (point-min))
(if (and (search-forward ";;; Mode settings stored by Calc" nil t)
(progn
(beginning-of-line)
(setq pos (point))
(search-forward "\n;;; End of mode settings" nil t)))
(progn
(beginning-of-line)
(forward-line 1)
(delete-region pos (point)))
(goto-char (point-max))
(insert "\n\n")
(forward-char -1))
(insert ";;; Mode settings stored by Calc on " (current-time-string) "\n")
(let ((list calc-mode-var-list))
(while list
(let* ((v (car (car list)))
(def (nth 1 (car list)))
(val (car vals)))
(or (equal val def)
(progn
(insert "(setq " (symbol-name v) " ")
(if (and (or (listp val)
(symbolp val))
(not (memq val '(nil t))))
(insert "'"))
(insert (prin1-to-string val) ")\n"))))
(setq list (cdr list)
vals (cdr vals))))
(run-hooks 'calc-mode-save-hook)
(insert ";;; End of mode settings\n")
(save-buffer)
(if calc-embedded-info
(calc-embedded-save-original-modes)))))
(defun calc-settings-file-name (name &optional arg)
(interactive
(list (read-file-name (format "Settings file name (normally %s): "
(abbreviate-file-name calc-settings-file)))
current-prefix-arg))
(calc-wrapper
(setq arg (if arg (prefix-numeric-value arg) 0))
(if (string-equal (file-name-nondirectory name) "")
(message "Calc settings file is \"%s\"" calc-settings-file)
(if (< (math-abs arg) 2)
(let ((list calc-mode-var-list))
(while list
(set (car (car list)) (nth 1 (car list)))
(setq list (cdr list)))))
(setq calc-settings-file name)
(or (and
calc-settings-file
(equal user-init-file calc-settings-file)
(> arg 0))
(< arg 0)
(load name t)
(message "New file")))))
(defun math-get-modes-vec ()
(list 'vec
calc-internal-prec
calc-word-size
(calc-stack-size)
calc-number-radix
(+ (if (<= (nth 1 calc-float-format) 0)
(+ calc-internal-prec (nth 1 calc-float-format))
(nth 1 calc-float-format))
(cdr (assq (car calc-float-format)
'((float . 0) (sci . 10000)
(eng . 20000) (fix . 30000)))))
(cond ((eq calc-angle-mode 'rad) 2)
((eq calc-angle-mode 'hms) 3)
(t 1))
(if calc-symbolic-mode 1 0)
(if calc-prefer-frac 1 0)
(if (eq calc-complex-mode 'polar) 1 0)
(cond ((eq calc-matrix-mode 'scalar) 0)
((eq calc-matrix-mode 'matrix) -2)
((eq calc-matrix-mode 'sqmatrix) -3)
(calc-matrix-mode)
(t -1))
(cond ((eq calc-simplify-mode 'none) -1)
((eq calc-simplify-mode 'num) 0)
((eq calc-simplify-mode 'binary) 2)
((eq calc-simplify-mode 'alg) 3)
((eq calc-simplify-mode 'ext) 4)
((eq calc-simplify-mode 'units) 5)
(t 1))
(cond ((eq calc-infinite-mode 1) 0)
(calc-infinite-mode 1)
(t -1))))
(defun calc-get-modes (n)
(interactive "P")
(calc-wrapper
(let ((modes (math-get-modes-vec)))
(calc-enter-result 0 "mode"
(if n
(if (and (>= (setq n (prefix-numeric-value n)) 1)
(< n (length modes)))
(nth n modes)
(error "Prefix out of range"))
modes)))))
(defun calc-shift-prefix (arg)
(interactive "P")
(calc-wrapper
(setq calc-shift-prefix (if arg
(> (prefix-numeric-value arg) 0)
(not calc-shift-prefix)))
(calc-init-prefixes)
(message (if calc-shift-prefix
"Prefix keys are now case-insensitive"
"Prefix keys must be unshifted (except V, Z)"))))
(defun calc-mode-record-mode (n)
(interactive "P")
(calc-wrapper
(calc-change-mode 'calc-mode-save-mode
(cond ((null n)
(cond ((not calc-embedded-info)
(if (eq calc-mode-save-mode 'save)
'local 'save))
((eq calc-mode-save-mode 'local) 'edit)
((eq calc-mode-save-mode 'edit) 'perm)
((eq calc-mode-save-mode 'perm) 'global)
((eq calc-mode-save-mode 'global) 'save)
((eq calc-mode-save-mode 'save) nil)
((eq calc-mode-save-mode nil) 'local)))
((= (setq n (prefix-numeric-value n)) 0) nil)
((= n 2) 'edit)
((= n 3) 'perm)
((= n 4) 'global)
((= n 5) 'save)
(t 'local)))
(message "%s"
(cond ((and (eq calc-mode-save-mode 'local) calc-embedded-info)
"Recording mode changes with [calc-mode: ...]")
((eq calc-mode-save-mode 'edit)
"Recording mode changes with [calc-edit-mode: ...]")
((eq calc-mode-save-mode 'perm)
"Recording mode changes with [calc-perm-mode: ...]")
((eq calc-mode-save-mode 'global)
"Recording mode changes with [calc-global-mode: ...]")
((eq calc-mode-save-mode 'save)
(format "Recording mode changes in \"%s\""
calc-settings-file))
(t
"Not recording mode changes permanently")))))
(defun calc-total-algebraic-mode (&optional _flag)
(interactive)
(calc-wrapper
(if (eq calc-algebraic-mode 'total)
(calc-algebraic-mode nil)
(calc-change-mode '(calc-algebraic-mode calc-incomplete-algebraic-mode)
'(total nil))
(use-local-map calc-alg-map)
(message
"All keys begin algebraic entry; use Meta (ESC) for Calc keys"))))
(defun calc-algebraic-mode (flag)
(interactive "P")
(calc-wrapper
(if flag
(calc-change-mode '(calc-algebraic-mode
calc-incomplete-algebraic-mode)
(list nil (not calc-incomplete-algebraic-mode)))
(calc-change-mode '(calc-algebraic-mode calc-incomplete-algebraic-mode)
(list (not calc-algebraic-mode) nil)))
(use-local-map calc-mode-map)
(message "%s" (if calc-algebraic-mode
"Numeric keys and ( and [ begin algebraic entry"
(if calc-incomplete-algebraic-mode
"Only ( and [ begin algebraic entry"
"No keys except ' and $ begin algebraic entry")))))
(defun calc-symbolic-mode (n)
(interactive "P")
(calc-wrapper
(message (if (calc-change-mode 'calc-symbolic-mode n nil t)
"Inexact computations like sqrt(2) are deferred"
"Numerical computations are always done immediately"))))
(defun calc-infinite-mode (n)
(interactive "P")
(calc-wrapper
(if (eq n 0)
(progn
(calc-change-mode 'calc-infinite-mode 1)
(message "Computations like 1 / 0 produce \"inf\""))
(message (if (calc-change-mode 'calc-infinite-mode n nil t)
"Computations like 1 / 0 produce \"uinf\""
"Computations like 1 / 0 are left unsimplified")))))
(defun calc-matrix-mode (arg)
(interactive "P")
(calc-wrapper
(calc-change-mode 'calc-matrix-mode
(cond ((eq arg 0) 'scalar)
((< (prefix-numeric-value arg) 1)
(and (< (prefix-numeric-value arg) -1) 'matrix))
(arg
(if (consp arg) 'sqmatrix
(prefix-numeric-value arg)))
((eq calc-matrix-mode 'matrix) 'scalar)
((eq calc-matrix-mode 'scalar) nil)
(t 'matrix)))
(if (integerp calc-matrix-mode)
(message "Variables are assumed to be %dx%d matrices"
calc-matrix-mode calc-matrix-mode)
(message (if (eq calc-matrix-mode 'matrix)
"Variables are assumed to be matrices"
(if (eq calc-matrix-mode 'sqmatrix)
"Variables are assumed to be square matrices"
(if calc-matrix-mode
"Variables are assumed to be scalars (non-matrices)"
"Variables are not assumed to be matrix or scalar")))))))
(defun calc-set-simplify-mode (mode arg msg)
(calc-change-mode 'calc-simplify-mode
(cond
(arg mode)
((eq calc-simplify-mode mode)
'alg)
(t mode)))
(message "%s" (if (eq calc-simplify-mode mode)
msg
"Algebraic simplification occurs by default")))
(defun calc-no-simplify-mode (arg)
(interactive "P")
(calc-wrapper
(calc-set-simplify-mode 'none arg
"Simplification is disabled")))
(defun calc-num-simplify-mode (arg)
(interactive "P")
(calc-wrapper
(calc-set-simplify-mode 'num arg
"Basic simplifications apply only if arguments are numeric")))
(defun calc-default-simplify-mode (arg)
(interactive "P")
(cond ((or (not arg) (= arg 3))
(calc-wrapper
(calc-set-simplify-mode
'alg nil "Algebraic simplification occurs by default")))
((= arg 1)
(calc-wrapper
(calc-set-simplify-mode
nil nil "Only basic simplifications occur by default")))
((= arg 0) (calc-num-simplify-mode 1))
((< arg 0) (calc-no-simplify-mode 1))
((= arg 2) (calc-bin-simplify-mode 1))
((= arg 4) (calc-ext-simplify-mode 1))
((= arg 5) (calc-units-simplify-mode 1))
(t (error "Prefix argument out of range"))))
(defun calc-bin-simplify-mode (arg)
(interactive "P")
(calc-wrapper
(calc-set-simplify-mode 'binary arg
(format "Binary simplification occurs by default (word size=%d)"
calc-word-size))))
(defun calc-basic-simplify-mode (arg)
(interactive "P")
(calc-wrapper
(calc-set-simplify-mode nil arg
"Only basic simplifications occur by default")))
(defun calc-alg-simplify-mode (arg)
(interactive "P")
(calc-wrapper
(calc-set-simplify-mode 'alg arg
"Algebraic simplification occurs by default")))
(defun calc-ext-simplify-mode (arg)
(interactive "P")
(calc-wrapper
(calc-set-simplify-mode 'ext arg
"Extended algebraic simplification occurs by default")))
(defun calc-units-simplify-mode (arg)
(interactive "P")
(calc-wrapper
(calc-set-simplify-mode 'units arg
"Units simplification occurs by default")))
(defun calc-auto-recompute (arg)
(interactive "P")
(calc-wrapper
(calc-change-mode 'calc-auto-recompute arg nil t)
(calc-refresh-evaltos)
(message (if calc-auto-recompute
"Automatically recomputing `=>' forms when necessary"
"Not recomputing `=>' forms automatically"))))
(defun calc-working (n)
(interactive "P")
(calc-wrapper
(cond ((consp n)
(calc-pop-push-record 0 "work"
(cond ((eq calc-display-working-message t) 1)
(calc-display-working-message 2)
(t 0))))
((eq n 2) (calc-change-mode 'calc-display-working-message 'lots))
((eq n 0) (calc-change-mode 'calc-display-working-message nil))
((eq n 1) (calc-change-mode 'calc-display-working-message t)))
(cond ((eq calc-display-working-message t)
(message "\"Working...\" messages enabled"))
(calc-display-working-message
(message "Detailed \"Working...\" messages enabled"))
(t
(message "\"Working...\" messages disabled")))))
(defun calc-always-load-extensions ()
(interactive)
(calc-wrapper
(if (setq calc-always-load-extensions (not calc-always-load-extensions))
(message "Always loading extensions package")
(message "Loading extensions package on demand only"))))
(defun calc-matrix-left-justify ()
(interactive)
(calc-wrapper
(calc-change-mode 'calc-matrix-just nil t)
(message "Matrix elements will be left-justified in columns")))
(defun calc-matrix-center-justify ()
(interactive)
(calc-wrapper
(calc-change-mode 'calc-matrix-just 'center t)
(message "Matrix elements will be centered in columns")))
(defun calc-matrix-right-justify ()
(interactive)
(calc-wrapper
(calc-change-mode 'calc-matrix-just 'right t)
(message "Matrix elements will be right-justified in columns")))
(defun calc-full-vectors (n)
(interactive "P")
(calc-wrapper
(message (if (calc-change-mode 'calc-full-vectors n t t)
"Displaying long vectors in full"
"Displaying long vectors in [a, b, c, ..., z] notation"))))
(defun calc-full-trail-vectors (n)
(interactive "P")
(calc-wrapper
(message (if (calc-change-mode 'calc-full-trail-vectors n nil t)
"Recording long vectors in full"
"Recording long vectors in [a, b, c, ..., z] notation"))))
(defun calc-break-vectors (n)
(interactive "P")
(calc-wrapper
(message (if (calc-change-mode 'calc-break-vectors n t t)
"Displaying vector elements one-per-line"
"Displaying vector elements all on one line"))))
(defun calc-vector-commas ()
(interactive)
(calc-wrapper
(if (calc-change-mode 'calc-vector-commas (if calc-vector-commas nil ",") t)
(message "Separating vector elements with \",\"")
(message "Separating vector elements with spaces"))))
(defun calc-vector-brackets ()
(interactive)
(calc-wrapper
(if (calc-change-mode 'calc-vector-brackets
(if (equal calc-vector-brackets "[]") nil "[]") t)
(message "Surrounding vectors with \"[]\"")
(message "Not surrounding vectors with brackets"))))
(defun calc-vector-braces ()
(interactive)
(calc-wrapper
(if (calc-change-mode 'calc-vector-brackets
(if (equal calc-vector-brackets "{}") nil "{}") t)
(message "Surrounding vectors with \"{}\"")
(message "Not surrounding vectors with brackets"))))
(defun calc-vector-parens ()
(interactive)
(calc-wrapper
(if (calc-change-mode 'calc-vector-brackets
(if (equal calc-vector-brackets "()") nil "()") t)
(message "Surrounding vectors with \"()\"")
(message "Not surrounding vectors with brackets"))))
(defun calc-matrix-brackets (arg)
(interactive "sCode letters (R, O, C): ")
(calc-wrapper
(let ((code (append (and (string-match "[rR]" arg) '(R))
(and (string-match "[oO]" arg) '(O))
(and (string-match "[cC]" arg) '(C))
(and (string-match "[pP]" arg) '(P))))
(bad (string-match "[^rRoOcCpP ]" arg)))
(if bad
(error "Unrecognized character: %c" (aref arg bad)))
(calc-change-mode 'calc-matrix-brackets code t))))
(provide 'calc-mode)
;;; calc-mode.el ends here
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