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[Emacs-diffs] Changes to emacs/lisp/float-sup.el [lexbind]
From: |
Miles Bader |
Subject: |
[Emacs-diffs] Changes to emacs/lisp/float-sup.el [lexbind] |
Date: |
Tue, 14 Oct 2003 19:51:57 -0400 |
Index: emacs/lisp/float-sup.el
diff -c emacs/lisp/float-sup.el:1.10.2.1 emacs/lisp/float-sup.el:removed
*** emacs/lisp/float-sup.el:1.10.2.1 Fri Apr 4 01:20:05 2003
--- emacs/lisp/float-sup.el Tue Oct 14 19:51:57 2003
***************
*** 1,63 ****
- ;;; float-sup.el --- detect absence of floating-point support in Emacs runtime
-
- ;; Copyright (C) 1985, 1986, 1987 Free Software Foundation, Inc.
-
- ;; Maintainer: FSF
- ;; Keywords: internal
-
- ;; 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 2, 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; see the file COPYING. If not, write to the
- ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Commentary:
-
- ;;; Code:
-
- ;; Provide a meaningful error message if we are running on
- ;; bare (non-float) emacs.
-
- (if (fboundp 'atan)
- nil
- (error "Floating point was disabled at compile time"))
-
- ;; provide an easy hook to tell if we are running with floats or not.
- ;; 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...).")
- ;; It's too inconvenient to make `e' a constant because it's used as
- ;; a temporary variable all the time.
- (defvar 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))
-
- (provide 'lisp-float-type)
-
- ;;; float-sup.el ends here
--- 0 ----
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Miles Bader <=