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764 lines
23 KiB
EmacsLisp
764 lines
23 KiB
EmacsLisp
;;; calc-misc.el --- miscellaenous functions for Calc
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;; Copyright (C) 1990, 1991, 1992, 1993, 2001, 2005 Free Software Foundation, Inc.
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;; Author: David Gillespie <daveg@synaptics.com>
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;; Maintainer: Jay Belanger <belanger@truman.edu>
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;; This file is part of GNU Emacs.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY. No author or distributor
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;; accepts responsibility to anyone for the consequences of using it
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;; or for whether it serves any particular purpose or works at all,
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;; unless he says so in writing. Refer to the GNU Emacs General Public
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;; License for full details.
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;; Everyone is granted permission to copy, modify and redistribute
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;; GNU Emacs, but only under the conditions described in the
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;; GNU Emacs General Public License. A copy of this license is
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;; supposed to have been given to you along with GNU Emacs so you
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;; can know your rights and responsibilities. It should be in a
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;; file named COPYING. Among other things, the copyright notice
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;; and this notice must be preserved on all copies.
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;;; Commentary:
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;;; Code:
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;; This file is autoloaded from calc.el.
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(require 'calc)
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(require 'calc-macs)
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(defun calc-dispatch-help (arg)
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"M-# is a prefix key; follow it with one of these letters:
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For turning Calc on and off:
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C calc. Start the Calculator in a window at the bottom of the screen.
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O calc-other-window. Start the Calculator but don't select its window.
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B calc-big-or-small. Control whether to use the full Emacs screen for Calc.
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Q quick-calc. Use the Calculator in the minibuffer.
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K calc-keypad. Start the Calculator in keypad mode (X window system only).
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E calc-embedded. Use the Calculator on a formula in this editing buffer.
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J calc-embedded-select. Like E, but select appropriate half of => or :=.
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W calc-embedded-word. Like E, but activate a single word, i.e., a number.
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Z calc-user-invocation. Invoke Calc in the way you defined with `Z I' cmd.
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X calc-quit. Turn Calc off.
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For moving data into and out of Calc:
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G calc-grab-region. Grab the region defined by mark and point into Calc.
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R calc-grab-rectangle. Grab the rectangle defined by mark, point into Calc.
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: calc-grab-sum-down. Grab a rectangle and sum the columns.
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_ calc-grab-sum-across. Grab a rectangle and sum the rows.
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Y calc-copy-to-buffer. Copy a value from the stack into the editing buffer.
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For use with Embedded mode:
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A calc-embedded-activate. Find and activate all :='s and =>'s in buffer.
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D calc-embedded-duplicate. Make a copy of this formula and select it.
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F calc-embedded-new-formula. Insert a new formula at current point.
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N calc-embedded-next. Advance cursor to next known formula in buffer.
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P calc-embedded-previous. Advance cursor to previous known formula.
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U calc-embedded-update-formula. Re-evaluate formula at point.
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` calc-embedded-edit. Use calc-edit to edit formula at point.
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Documentation:
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I calc-info. Read the Calculator manual in the Emacs Info system.
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T calc-tutorial. Run the Calculator Tutorial using the Emacs Info system.
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S calc-summary. Read the Summary from the Calculator manual in Info.
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Miscellaneous:
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L calc-load-everything. Load all parts of the Calculator into memory.
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M read-kbd-macro. Read a region of keystroke names as a keyboard macro.
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0 (zero) calc-reset. Reset Calc stack and modes to default state.
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Press twice (`M-# M-#' or `M-# #') to turn Calc on or off using the same
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Calc user interface as before (either M-# C or M-# K; initially M-# C)."
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(interactive "P")
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(calc-check-defines)
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(if calc-dispatch-help
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(progn
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(save-window-excursion
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(describe-function 'calc-dispatch-help)
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(let ((win (get-buffer-window "*Help*")))
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(if win
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(let (key)
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(select-window win)
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(while (progn
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(message "Calc options: Calc, Keypad, ... %s"
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"press SPC, DEL to scroll, C-g to cancel")
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(memq (car (setq key (calc-read-key t)))
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'(? ?\C-h ?\C-? ?\C-v ?\M-v)))
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(condition-case err
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(if (memq (car key) '(? ?\C-v))
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(scroll-up)
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(scroll-down))
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(error (beep))))
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(calc-unread-command (cdr key))))))
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(calc-do-dispatch nil))
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(let ((calc-dispatch-help t))
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(calc-do-dispatch arg))))
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(defun calc-big-or-small (arg)
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"Toggle Calc between full-screen and regular mode."
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(interactive "P")
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(let ((cwin (get-buffer-window "*Calculator*"))
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(twin (get-buffer-window "*Calc Trail*"))
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(kwin (get-buffer-window "*Calc Keypad*")))
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(if cwin
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(setq calc-full-mode
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(if kwin
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(and twin (eq (window-width twin) (frame-width)))
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(eq (window-height cwin) (1- (frame-height))))))
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(setq calc-full-mode (if arg
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(> (prefix-numeric-value arg) 0)
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(not calc-full-mode)))
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(if kwin
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(progn
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(calc-quit)
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(calc-do-keypad calc-full-mode nil))
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(if cwin
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(progn
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(calc-quit)
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(calc nil calc-full-mode nil))))
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(message (if calc-full-mode
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"Now using full screen for Calc"
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"Now using partial screen for Calc"))))
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(defun calc-other-window (&optional interactive)
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"Invoke the Calculator in another window."
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(interactive "p")
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(if (memq major-mode '(calc-mode calc-trail-mode))
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(progn
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(other-window 1)
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(if (memq major-mode '(calc-mode calc-trail-mode))
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(other-window 1)))
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(if (get-buffer-window "*Calculator*")
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(calc-quit)
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(let ((win (selected-window)))
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(calc nil win interactive)))))
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(defun another-calc ()
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"Create another, independent Calculator buffer."
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(interactive)
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(if (eq major-mode 'calc-mode)
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(mapcar (function
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(lambda (v)
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(set-default v (symbol-value v)))) calc-local-var-list))
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(set-buffer (generate-new-buffer "*Calculator*"))
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(pop-to-buffer (current-buffer))
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(calc-mode))
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(defun calc-info ()
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"Run the Emacs Info system on the Calculator documentation."
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(interactive)
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(select-window (get-largest-window))
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(info "Calc"))
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(defun calc-info-goto-node (node)
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"Go to a node in the Calculator info documentation."
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(interactive)
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(select-window (get-largest-window))
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(info (concat "(Calc)" node)))
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(defun calc-tutorial ()
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"Run the Emacs Info system on the Calculator Tutorial."
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(interactive)
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(if (get-buffer-window "*Calculator*")
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(calc-quit))
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(calc-info-goto-node "Interactive Tutorial")
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(calc-other-window)
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(message "Welcome to the Calc Tutorial!"))
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(defun calc-info-summary ()
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"Run the Emacs Info system on the Calculator Summary."
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(interactive)
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(calc-info-goto-node "Summary"))
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(defun calc-help ()
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(interactive)
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(let ((msgs (append
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'("Press `h' for complete help; press `?' repeatedly for a summary"
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"Letter keys: Negate; Precision; Yank; Why; Xtended cmd; Quit"
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"Letter keys: SHIFT + Undo, reDo; Keep-args; Inverse, Hyperbolic"
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"Letter keys: SHIFT + sQrt; Sin, Cos, Tan; Exp, Ln, logB"
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"Letter keys: SHIFT + Floor, Round; Abs, conJ, arG; Pi"
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"Letter keys: SHIFT + Num-eval; More-recn; eXec-kbd-macro"
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"Other keys: +, -, *, /, ^, \\ (int div), : (frac div)"
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"Other keys: & (1/x), | (concat), % (modulo), ! (factorial)"
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"Other keys: ' (alg-entry), = (eval), ` (edit); M-RET (last-args)"
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"Other keys: SPC/RET (enter/dup), LFD (over); < > (scroll horiz)"
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"Other keys: DEL (drop), M-DEL (drop-above); { } (scroll vert)"
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"Other keys: TAB (swap/roll-dn), M-TAB (roll-up)"
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"Other keys: [ , ; ] (vector), ( , ) (complex), ( ; ) (polar)"
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"Prefix keys: Algebra, Binary/business, Convert, Display"
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"Prefix keys: Functions, Graphics, Help, J (select)"
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"Prefix keys: Kombinatorics/statistics, Modes, Store/recall"
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"Prefix keys: Trail/time, Units/statistics, Vector/matrix"
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"Prefix keys: Z (user), SHIFT + Z (define)"
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"Prefix keys: prefix + ? gives further help for that prefix")
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(list (format
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" Calc %s by Dave Gillespie, daveg@synaptics.com"
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calc-version)))))
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(if calc-full-help-flag
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msgs
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(if (or calc-inverse-flag calc-hyperbolic-flag)
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(if calc-inverse-flag
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(if calc-hyperbolic-flag
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(calc-inv-hyp-prefix-help)
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(calc-inverse-prefix-help))
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(calc-hyperbolic-prefix-help))
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(setq calc-help-phase
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(if (eq this-command last-command)
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(% (1+ calc-help-phase) (1+ (length msgs)))
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0))
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(let ((msg (nth calc-help-phase msgs)))
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(message "%s" (if msg
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(concat msg ":"
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(make-string (- (apply 'max
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(mapcar 'length
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msgs))
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(length msg)) 32)
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" [?=MORE]")
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"")))))))
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;;;; Stack and buffer management.
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;; The variable calc-last-why-command is set in calc-do-handly-whys
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;; and used in calc-why (in calc-stuff.el).
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(defvar calc-last-why-command)
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(defun calc-do-handle-whys ()
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(setq calc-why (sort calc-next-why
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(function
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(lambda (x y)
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(and (eq (car x) '*) (not (eq (car y) '*))))))
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calc-next-why nil)
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(if (and calc-why (or (eq calc-auto-why t)
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(and (eq (car (car calc-why)) '*)
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calc-auto-why)))
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(progn
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(require 'calc-ext)
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(calc-explain-why (car calc-why)
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(if (eq calc-auto-why t)
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(cdr calc-why)
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(if calc-auto-why
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(eq (car (nth 1 calc-why)) '*))))
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(setq calc-last-why-command this-command)
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(calc-clear-command-flag 'clear-message))))
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(defun calc-record-why (&rest stuff)
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(if (eq (car stuff) 'quiet)
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(setq stuff (cdr stuff))
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(if (and (symbolp (car stuff))
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(cdr stuff)
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(or (Math-objectp (nth 1 stuff))
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(and (Math-vectorp (nth 1 stuff))
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(math-constp (nth 1 stuff)))
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(math-infinitep (nth 1 stuff))))
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(setq stuff (cons '* stuff))
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(if (and (stringp (car stuff))
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(string-match "\\`\\*" (car stuff)))
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(setq stuff (cons '* (cons (substring (car stuff) 1)
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(cdr stuff)))))))
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(setq calc-next-why (cons stuff calc-next-why))
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nil)
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;;; True if A is a constant or vector of constants. [P x] [Public]
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(defun math-constp (a)
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(or (Math-scalarp a)
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(and (memq (car a) '(sdev intv mod vec))
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(progn
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(while (and (setq a (cdr a))
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(or (Math-scalarp (car a)) ; optimization
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(math-constp (car a)))))
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(null a)))))
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(defun calc-roll-down-stack (n &optional m)
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(if (< n 0)
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(calc-roll-up-stack (- n) m)
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(if (or (= n 0) (> n (calc-stack-size))) (setq n (calc-stack-size)))
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(or m (setq m 1))
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(and (> n 1)
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(< m n)
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(if (and calc-any-selections
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(not calc-use-selections))
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(calc-roll-down-with-selections n m)
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(calc-pop-push-list n
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(append (calc-top-list m 1)
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(calc-top-list (- n m) (1+ m))))))))
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(defun calc-roll-up-stack (n &optional m)
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(if (< n 0)
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(calc-roll-down-stack (- n) m)
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(if (or (= n 0) (> n (calc-stack-size))) (setq n (calc-stack-size)))
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(or m (setq m 1))
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(and (> n 1)
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(< m n)
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(if (and calc-any-selections
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(not calc-use-selections))
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(calc-roll-up-with-selections n m)
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(calc-pop-push-list n
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(append (calc-top-list (- n m) 1)
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(calc-top-list m (- n m -1))))))))
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(defun calc-do-refresh ()
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(if calc-hyperbolic-flag
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(progn
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(setq calc-display-dirty t)
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nil)
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(calc-refresh)
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t))
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(defun calc-record-list (vals &optional prefix)
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(while vals
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(or (eq (car vals) 'top-of-stack)
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(progn
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(calc-record (car vals) prefix)
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(setq prefix "...")))
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(setq vals (cdr vals))))
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(defun calc-last-args-stub (arg)
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(interactive "p")
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(require 'calc-ext)
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(calc-last-args arg))
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(defun calc-power (arg)
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(interactive "P")
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(calc-slow-wrapper
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(if (and (featurep 'calc-ext)
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(calc-is-inverse))
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(calc-binary-op "root" 'calcFunc-nroot arg nil nil)
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(calc-binary-op "^" 'calcFunc-pow arg nil nil '^))))
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(defun calc-mod (arg)
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(interactive "P")
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(calc-slow-wrapper
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(calc-binary-op "%" 'calcFunc-mod arg nil nil '%)))
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(defun calc-inv (arg)
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(interactive "P")
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(calc-slow-wrapper
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(calc-unary-op "inv" 'calcFunc-inv arg)))
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(defun calc-percent ()
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(interactive)
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(calc-slow-wrapper
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(calc-pop-push-record-list
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1 "%" (list (list 'calcFunc-percent (calc-top-n 1))))))
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(defun calc-over (n)
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(interactive "P")
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(if n
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(calc-enter (- (prefix-numeric-value n)))
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(calc-enter -2)))
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(defun calc-pop-above (n)
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(interactive "P")
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(if n
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(calc-pop (- (prefix-numeric-value n)))
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(calc-pop -2)))
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(defun calc-roll-down (n)
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(interactive "P")
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(calc-wrapper
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(let ((nn (prefix-numeric-value n)))
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(cond ((null n)
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(calc-roll-down-stack 2))
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((> nn 0)
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(calc-roll-down-stack nn))
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((= nn 0)
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(calc-pop-push-list (calc-stack-size)
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(reverse
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(calc-top-list (calc-stack-size)))))
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(t
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(calc-roll-down-stack (calc-stack-size) (- nn)))))))
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(defun calc-roll-up (n)
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(interactive "P")
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(calc-wrapper
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(let ((nn (prefix-numeric-value n)))
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(cond ((null n)
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(calc-roll-up-stack 3))
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((> nn 0)
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(calc-roll-up-stack nn))
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((= nn 0)
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(calc-pop-push-list (calc-stack-size)
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(reverse
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(calc-top-list (calc-stack-size)))))
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(t
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(calc-roll-up-stack (calc-stack-size) (- nn)))))))
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;;; Other commands.
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(defun calc-num-prefix-name (n)
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(cond ((eq n '-) "- ")
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((equal n '(4)) "C-u ")
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((consp n) (format "%d " (car n)))
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((integerp n) (format "%d " n))
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(t "")))
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(defun calc-missing-key (n)
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"This is a placeholder for a command which needs to be loaded from calc-ext.
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When this key is used, calc-ext (the Calculator extensions module) will be
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loaded and the keystroke automatically re-typed."
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(interactive "P")
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(require 'calc-ext)
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(if (keymapp (key-binding (char-to-string last-command-char)))
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(message "%s%c-" (calc-num-prefix-name n) last-command-char))
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(calc-unread-command)
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(setq prefix-arg n))
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(defun calc-shift-Y-prefix-help ()
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(interactive)
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(require 'calc-ext)
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(calc-do-prefix-help calc-Y-help-msgs "other" ?Y))
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(defun calcDigit-letter ()
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(interactive)
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(if (calc-minibuffer-contains "[-+]?\\(1[1-9]\\|[2-9][0-9]\\)#.*")
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(progn
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(setq last-command-char (upcase last-command-char))
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(calcDigit-key))
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(calcDigit-nondigit)))
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;; A Lisp version of temp_minibuffer_message from minibuf.c.
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(defun calc-temp-minibuffer-message (m)
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(let ((savemax (point-max)))
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(save-excursion
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(goto-char (point-max))
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(insert m))
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(let ((okay nil))
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(unwind-protect
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(progn
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(sit-for 2)
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(identity 1) ; this forces a call to QUIT; in bytecode.c.
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(setq okay t))
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(progn
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(delete-region savemax (point-max))
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(or okay (abort-recursive-edit)))))))
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(put 'math-with-extra-prec 'lisp-indent-hook 1)
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;;; Concatenate two vectors, or a vector and an object. [V O O] [Public]
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(defun math-concat (v1 v2)
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(if (stringp v1)
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(concat v1 v2)
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(require 'calc-ext)
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(if (and (or (math-objvecp v1) (math-known-scalarp v1))
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(or (math-objvecp v2) (math-known-scalarp v2)))
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(append (if (and (math-vectorp v1)
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(or (math-matrixp v1)
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(not (math-matrixp v2))))
|
|
v1
|
|
(list 'vec v1))
|
|
(if (and (math-vectorp v2)
|
|
(or (math-matrixp v2)
|
|
(not (math-matrixp v1))))
|
|
(cdr v2)
|
|
(list v2)))
|
|
(list '| v1 v2))))
|
|
|
|
|
|
;;; True if A is zero. Works for un-normalized values. [P n] [Public]
|
|
(defun math-zerop (a)
|
|
(if (consp a)
|
|
(cond ((memq (car a) '(bigpos bigneg))
|
|
(while (eq (car (setq a (cdr a))) 0))
|
|
(null a))
|
|
((memq (car a) '(frac float polar mod))
|
|
(math-zerop (nth 1 a)))
|
|
((eq (car a) 'cplx)
|
|
(and (math-zerop (nth 1 a)) (math-zerop (nth 2 a))))
|
|
((eq (car a) 'hms)
|
|
(and (math-zerop (nth 1 a))
|
|
(math-zerop (nth 2 a))
|
|
(math-zerop (nth 3 a)))))
|
|
(eq a 0)))
|
|
|
|
|
|
;;; True if A is real and negative. [P n] [Public]
|
|
|
|
(defun math-negp (a)
|
|
(if (consp a)
|
|
(cond ((eq (car a) 'bigpos) nil)
|
|
((eq (car a) 'bigneg) (cdr a))
|
|
((memq (car a) '(float frac))
|
|
(Math-integer-negp (nth 1 a)))
|
|
((eq (car a) 'hms)
|
|
(if (math-zerop (nth 1 a))
|
|
(if (math-zerop (nth 2 a))
|
|
(math-negp (nth 3 a))
|
|
(math-negp (nth 2 a)))
|
|
(math-negp (nth 1 a))))
|
|
((eq (car a) 'date)
|
|
(math-negp (nth 1 a)))
|
|
((eq (car a) 'intv)
|
|
(or (math-negp (nth 3 a))
|
|
(and (math-zerop (nth 3 a))
|
|
(memq (nth 1 a) '(0 2)))))
|
|
((equal a '(neg (var inf var-inf))) t))
|
|
(< a 0)))
|
|
|
|
;;; True if A is a negative number or an expression the starts with '-'.
|
|
(defun math-looks-negp (a) ; [P x] [Public]
|
|
(or (Math-negp a)
|
|
(eq (car-safe a) 'neg)
|
|
(and (memq (car-safe a) '(* /))
|
|
(or (math-looks-negp (nth 1 a))
|
|
(math-looks-negp (nth 2 a))))
|
|
(and (eq (car-safe a) '-)
|
|
(math-looks-negp (nth 1 a)))))
|
|
|
|
|
|
;;; True if A is real and positive. [P n] [Public]
|
|
(defun math-posp (a)
|
|
(if (consp a)
|
|
(cond ((eq (car a) 'bigpos) (cdr a))
|
|
((eq (car a) 'bigneg) nil)
|
|
((memq (car a) '(float frac))
|
|
(Math-integer-posp (nth 1 a)))
|
|
((eq (car a) 'hms)
|
|
(if (math-zerop (nth 1 a))
|
|
(if (math-zerop (nth 2 a))
|
|
(math-posp (nth 3 a))
|
|
(math-posp (nth 2 a)))
|
|
(math-posp (nth 1 a))))
|
|
((eq (car a) 'date)
|
|
(math-posp (nth 1 a)))
|
|
((eq (car a) 'mod)
|
|
(not (math-zerop (nth 1 a))))
|
|
((eq (car a) 'intv)
|
|
(or (math-posp (nth 2 a))
|
|
(and (math-zerop (nth 2 a))
|
|
(memq (nth 1 a) '(0 1)))))
|
|
((equal a '(var inf var-inf)) t))
|
|
(> a 0)))
|
|
|
|
(defalias 'math-fixnump 'integerp)
|
|
(defalias 'math-fixnatnump 'natnump)
|
|
|
|
|
|
;;; True if A is an even integer. [P R R] [Public]
|
|
(defun math-evenp (a)
|
|
(if (consp a)
|
|
(and (memq (car a) '(bigpos bigneg))
|
|
(= (% (nth 1 a) 2) 0))
|
|
(= (% a 2) 0)))
|
|
|
|
;;; Compute A / 2, for small or big integer A. [I i]
|
|
;;; If A is negative, type of truncation is undefined.
|
|
(defun math-div2 (a)
|
|
(if (consp a)
|
|
(if (cdr a)
|
|
(math-normalize (cons (car a) (math-div2-bignum (cdr a))))
|
|
0)
|
|
(/ a 2)))
|
|
|
|
(defun math-div2-bignum (a) ; [l l]
|
|
(if (cdr a)
|
|
(cons (+ (/ (car a) 2) (* (% (nth 1 a) 2) 500))
|
|
(math-div2-bignum (cdr a)))
|
|
(list (/ (car a) 2))))
|
|
|
|
|
|
;;; Reject an argument to a calculator function. [Public]
|
|
(defun math-reject-arg (&optional a p option)
|
|
(if option
|
|
(calc-record-why option p a)
|
|
(if p
|
|
(calc-record-why p a)))
|
|
(signal 'wrong-type-argument (and a (if p (list p a) (list a)))))
|
|
|
|
|
|
;;; Coerce A to be an integer (by truncation toward zero). [I N] [Public]
|
|
|
|
;; The variable math-trunc-prec is local to math-trunc, but used by
|
|
;; math-trunc-fancy in calc-arith.el, which is called by math-trunc.
|
|
|
|
(defun math-trunc (a &optional math-trunc-prec)
|
|
(cond (math-trunc-prec
|
|
(require 'calc-ext)
|
|
(math-trunc-special a math-trunc-prec))
|
|
((Math-integerp a) a)
|
|
((Math-looks-negp a)
|
|
(math-neg (math-trunc (math-neg a))))
|
|
((eq (car a) 'float)
|
|
(math-scale-int (nth 1 a) (nth 2 a)))
|
|
(t (require 'calc-ext)
|
|
(math-trunc-fancy a))))
|
|
(defalias 'calcFunc-trunc 'math-trunc)
|
|
|
|
;;; Coerce A to be an integer (by truncation toward minus infinity). [I N]
|
|
|
|
;; The variable math-floor-prec is local to math-floor, but used by
|
|
;; math-floor-fancy in calc-arith.el, which is called by math-floor.
|
|
|
|
(defun math-floor (a &optional math-floor-prec) ; [Public]
|
|
(cond (math-floor-prec
|
|
(require 'calc-ext)
|
|
(math-floor-special a math-floor-prec))
|
|
((Math-integerp a) a)
|
|
((Math-messy-integerp a) (math-trunc a))
|
|
((Math-realp a)
|
|
(if (Math-negp a)
|
|
(math-add (math-trunc a) -1)
|
|
(math-trunc a)))
|
|
(t (require 'calc-ext)
|
|
(math-floor-fancy a))))
|
|
(defalias 'calcFunc-floor 'math-floor)
|
|
|
|
|
|
(defun math-imod (a b) ; [I I I] [Public]
|
|
(if (and (not (consp a)) (not (consp b)))
|
|
(if (= b 0)
|
|
(math-reject-arg a "*Division by zero")
|
|
(% a b))
|
|
(cdr (math-idivmod a b))))
|
|
|
|
|
|
(defun calcFunc-inv (m)
|
|
(if (Math-vectorp m)
|
|
(progn
|
|
(require 'calc-ext)
|
|
(if (math-square-matrixp m)
|
|
(or (math-with-extra-prec 2 (math-matrix-inv-raw m))
|
|
(math-reject-arg m "*Singular matrix"))
|
|
(math-reject-arg m 'square-matrixp)))
|
|
(math-div 1 m)))
|
|
|
|
|
|
(defun math-do-working (msg arg)
|
|
(or executing-kbd-macro
|
|
(progn
|
|
(calc-set-command-flag 'clear-message)
|
|
(if math-working-step
|
|
(if math-working-step-2
|
|
(setq msg (format "[%d/%d] %s"
|
|
math-working-step math-working-step-2 msg))
|
|
(setq msg (format "[%d] %s" math-working-step msg))))
|
|
(message "Working... %s = %s" msg
|
|
(math-showing-full-precision (math-format-number arg))))))
|
|
|
|
|
|
;;; Compute A modulo B, defined in terms of truncation toward minus infinity.
|
|
(defun math-mod (a b) ; [R R R] [Public]
|
|
(cond ((and (Math-zerop a) (not (eq (car-safe a) 'mod))) a)
|
|
((Math-zerop b)
|
|
(math-reject-arg a "*Division by zero"))
|
|
((and (Math-natnump a) (Math-natnump b))
|
|
(math-imod a b))
|
|
((and (Math-anglep a) (Math-anglep b))
|
|
(math-sub a (math-mul (math-floor (math-div a b)) b)))
|
|
(t (require 'calc-ext)
|
|
(math-mod-fancy a b))))
|
|
|
|
|
|
|
|
;;; General exponentiation.
|
|
|
|
(defun math-pow (a b) ; [O O N] [Public]
|
|
(cond ((equal b '(var nan var-nan))
|
|
b)
|
|
((Math-zerop a)
|
|
(if (and (Math-scalarp b) (Math-posp b))
|
|
(if (math-floatp b) (math-float a) a)
|
|
(require 'calc-ext)
|
|
(math-pow-of-zero a b)))
|
|
((or (eq a 1) (eq b 1)) a)
|
|
((or (equal a '(float 1 0)) (equal b '(float 1 0))) a)
|
|
((Math-zerop b)
|
|
(if (Math-scalarp a)
|
|
(if (or (math-floatp a) (math-floatp b))
|
|
'(float 1 0) 1)
|
|
(require 'calc-ext)
|
|
(math-pow-zero a b)))
|
|
((and (Math-integerp b) (or (Math-numberp a) (Math-vectorp a)))
|
|
(if (and (equal a '(float 1 1)) (integerp b))
|
|
(math-make-float 1 b)
|
|
(math-with-extra-prec 2
|
|
(math-ipow a b))))
|
|
(t
|
|
(require 'calc-ext)
|
|
(math-pow-fancy a b))))
|
|
|
|
(defun math-ipow (a n) ; [O O I] [Public]
|
|
(cond ((Math-integer-negp n)
|
|
(math-ipow (math-div 1 a) (Math-integer-neg n)))
|
|
((not (consp n))
|
|
(if (and (Math-ratp a) (> n 20))
|
|
(math-iipow-show a n)
|
|
(math-iipow a n)))
|
|
((math-evenp n)
|
|
(math-ipow (math-mul a a) (math-div2 n)))
|
|
(t
|
|
(math-mul a (math-ipow (math-mul a a)
|
|
(math-div2 (math-add n -1)))))))
|
|
|
|
(defun math-iipow (a n) ; [O O S]
|
|
(cond ((= n 0) 1)
|
|
((= n 1) a)
|
|
((= (% n 2) 0) (math-iipow (math-mul a a) (/ n 2)))
|
|
(t (math-mul a (math-iipow (math-mul a a) (/ n 2))))))
|
|
|
|
(defun math-iipow-show (a n) ; [O O S]
|
|
(math-working "pow" a)
|
|
(let ((val (cond
|
|
((= n 0) 1)
|
|
((= n 1) a)
|
|
((= (% n 2) 0) (math-iipow-show (math-mul a a) (/ n 2)))
|
|
(t (math-mul a (math-iipow-show (math-mul a a) (/ n 2)))))))
|
|
(math-working "pow" val)
|
|
val))
|
|
|
|
|
|
(defun math-read-radix-digit (dig) ; [D S; Z S]
|
|
(if (> dig ?9)
|
|
(if (< dig ?A)
|
|
nil
|
|
(- dig 55))
|
|
(if (>= dig ?0)
|
|
(- dig ?0)
|
|
nil)))
|
|
|
|
|
|
;;; Bug reporting
|
|
|
|
(defun report-calc-bug ()
|
|
"Report a bug in Calc, the GNU Emacs calculator.
|
|
Prompts for bug subject. Leaves you in a mail buffer."
|
|
(interactive)
|
|
(let ((reporter-prompt-for-summary-p t))
|
|
(reporter-submit-bug-report calc-bug-address "Calc" '(calc-version)
|
|
nil nil
|
|
"Please describe exactly what actions triggered the bug and the
|
|
precise symptoms of the bug. If possible, include a backtrace by
|
|
doing 'M-x toggle-debug-on-error', then reproducing the bug.
|
|
" )))
|
|
(defalias 'calc-report-bug 'report-calc-bug)
|
|
|
|
(provide 'calc-misc)
|
|
|
|
;;; arch-tag: 7984d9d0-62e5-41dc-afb8-e904b975f250
|
|
;;; calc-misc.el ends here
|