view lisp/float-sup.el @ 5198:bc3ede8f29a8

fix spacing in some files -------------------- ChangeLog entries follow: -------------------- src/ChangeLog addition: 2010-04-09 Ben Wing <ben@xemacs.org> * fileio.c (check_writable): * fileio.c (Fdo_auto_save): * redisplay-xlike-inc.c (separate_textual_runs_nomule): * redisplay-xlike-inc.c (separate_textual_runs_xft_nomule): * redisplay-xlike-inc.c (separate_textual_runs_xft_mule): * redisplay-xlike-inc.c (separate_textual_runs_mule): * redisplay-xlike-inc.c (XLIKE_output_string): * redisplay-xlike-inc.c (XLIKE_output_vertical_divider): * redisplay.c (create_text_block): * redisplay.c (regenerate_window): * redisplay.c (redisplay_window): * redisplay.c (redisplay_device): * redisplay.c (window_line_number): * redisplay.c (point_would_be_visible): * redisplay.c (compute_display_line_dynarr_usage): * specifier.c (prune_specifiers): * specifier.c (finalize_specifier): * specifier.c (make_magic_specifier): * specifier.c (charset_matches_specifier_tag_set_p): * specifier.c (Fdefine_specifier_tag): * specifier.c (setup_device_initial_specifier_tags): * specifier.c (bodily_specifier): * specifier.c (add_spec_to_ghost_specifier): * specifier.c (remove_ghost_specifier): * specifier.c (set_specifier_fallback): * specifier.c (specifier_instance_from_inst_list): * specifier.c (set_specifier_caching): Fix coding style to correspond to GNU standard.
author Ben Wing <ben@xemacs.org>
date Fri, 09 Apr 2010 23:38:02 -0500
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