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Diffstat (limited to 'lisp/float-sup.el')
| -rw-r--r-- | lisp/float-sup.el | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/lisp/float-sup.el b/lisp/float-sup.el deleted file mode 100644 index 4c45112e980..00000000000 --- a/lisp/float-sup.el +++ /dev/null @@ -1,63 +0,0 @@ -;;; float-sup.el --- define some constants useful for floating point numbers. - -;; 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 |