Mercurial > hg > xemacs-beta

view lisp/float-sup.el @ 1149:a123f88fa975

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
[xemacs-hg @ 2002-12-08 10:24:33 by michaels] 2002-12-02 Mike Sperber <mike@xemacs.org> * The Great Window Configuration rewrite: Re-implement window configuration functionality in Emacs Lisp. * window.h (Fcurrent_window_configuration): Don't export anymore. (Qcurrent_window_configuration): Declare. (Qset_window_configuration): Declare. * event-stream.c (execute_help_form): * bytecode.c (execute_rare_opcode): Call out to Lisp to save window excursion. * window.c (Qcurrent_window_configuration): Declare. (Qwindow_configurationp): (Vwindow_configuration_free_list): (Qset_window_configuration): (Qtemp_buffer_show_hook): (struct saved_window): (struct window_config): (SAVED_WINDOW_N): (XWINDOW_CONFIGURATION): (wrap_window_configuration): (WINDOW_CONFIGURATIONP): (CHECK_WINDOW_CONFIGURATION): (mark_window_config): (sizeof_window_config_for_n_windows): (sizeof_window_config): (print_window_config): (saved_window_equal): (window_config_equal): (Fwindow_configuration_p): (mark_windows_in_use_closure): (mark_windows_in_use): (free_window_configuration): (Fset_window_configuration): (count_windows): (saved_window_index): (save_window_save): (Fcurrent_window_configuration): (Fsave_window_excursion): Remove. (mark_window_as_deleted): Rectify comment about `set-window-configuration'. (Fset_window_buffer): Reinstate code not activated because of old implementation of window configurations. (temp_output_buffer_show): Don't run `temp-buffer-show-hook' anymore---this wasn't supposed to happen anyway according to the documentation of `temp-buffer-show-function'. (reinit_vars_of_window): Don't do the window configuration stuff no more (vars_of_window): Don't set up `temp-buffer-show-hook' any more. 2002-12-02 Mike Sperber <mike@xemacs.org> * The Great Window Configuration rewrite: Re-implement window configuration functionality in Emacs Lisp. * window-xemacs.el (current-window-configuration): (set-window-configuration): (plus many functions they depend on) Re-implement window configurations in Emacs Lisp.
author michaels
date Sun, 08 Dec 2002 10:25:14 +0000
parents 576fb035e263
children 308d34e9f07d
line wrap: on
line source

;;; float-sup.el --- detect absence of floating-point support in XEmacs runtime

;; Copyright (C) 1985-7, 1997 Free Software Foundation, Inc.

;; Maintainer: FSF
;; Keywords: internal, dumped

;; This file is part of XEmacs.

;; XEmacs 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 2, or (at your option)
;; any later version.

;; XEmacs 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 XEmacs; see the file COPYING.  If not, write to the Free
;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
;; 02111-1307, USA.

;;; Synched up with: FSF 19.34.

;;; Code:

;; This file is dumped with XEmacs.

;; Provide a meaningful error message if we are running on
;; bare (non-float) emacs.
;; Can't test for 'floatp since that may be defined by float-imitation
;; packages like float.el in this very directory.

;; XEmacs change
(or (featurep 'lisp-float-type)
    (error "Floating point was disabled at compile time"))

;; define pi and e via math-lib calls. (much less prone to killer typos.)
(defconst pi (* 4 (atan 1)) "The value of Pi (3.1415926...)")
(defconst e (exp 1) "The value of e (2.7182818...)")

;; Careful when editing this file ... typos here will be hard to spot.
;; (defconst pi       3.14159265358979323846264338327
;;  "The value of Pi (3.14159265358979323846264338327...)")

(defconst degrees-to-radians (/ pi 180.0)
  "Degrees to radian conversion constant")
(defconst radians-to-degrees (/ 180.0 pi)
  "Radian to degree conversion constant")

;; these expand to a single multiply by a float when byte compiled

(defmacro degrees-to-radians (x)
  "Convert ARG from degrees to radians."
  (list '* (/ pi 180.0) x))
(defmacro radians-to-degrees (x)
  "Convert ARG from radians to degrees."
  (list '* (/ 180.0 pi) x))

;; Provided in C code in XEmacs
;; (provide 'lisp-float-type)

;;; float-sup.el ends here