;; Maintainer: FSF
;; Keywords: internal
+;; Package: emacs
;; This file is part of GNU Emacs.
;;; 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.)
+;; 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 float-pi (* 4 (atan 1)) "The value of Pi (3.1415926...).")
(defconst pi float-pi "Obsolete since Emacs-23.3. Use `float-pi' instead.")
(defconst float-e (exp 1) "The value of e (2.7182818...).")
-(defvar e float-e "Obsolete since Emacs-23.3. Use `float-e' instead.")
(defconst degrees-to-radians (/ float-pi 180.0)
"Degrees to radian conversion constant.")
(defconst radians-to-degrees (/ 180.0 float-pi)
"Radian to degree conversion constant.")
-;; these expand to a single multiply by a float when byte compiled
+;; These expand to a single multiply by a float when byte compiled.
(defmacro degrees-to-radians (x)
- "Convert ARG from degrees to radians."
+ "Convert X from degrees to radians."
(list '* degrees-to-radians x))
(defmacro radians-to-degrees (x)
- "Convert ARG from radians to degrees."
+ "Convert X from radians to degrees."
(list '* radians-to-degrees x))
(provide 'lisp-float-type)
-;; arch-tag: e7837072-a4af-4d08-9953-8a3e755abf9d
;;; float-sup.el ends here