diff options
Diffstat (limited to 'lisp/emacs-lisp/float-sup.el')
| -rw-r--r-- | lisp/emacs-lisp/float-sup.el | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/lisp/emacs-lisp/float-sup.el b/lisp/emacs-lisp/float-sup.el index 6bdc9073ddf..f213d2dba9d 100644 --- a/lisp/emacs-lisp/float-sup.el +++ b/lisp/emacs-lisp/float-sup.el @@ -35,25 +35,24 @@ ;; 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...).") +(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.") -;; 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...).") +(defconst float-e (exp 1) "The value of e (2.7182818...).") -(defconst degrees-to-radians (/ pi 180.0) +(defconst degrees-to-radians (/ float-pi 180.0) "Degrees to radian conversion constant.") -(defconst radians-to-degrees (/ 180.0 pi) +(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 (defmacro degrees-to-radians (x) - "Convert ARG from degrees to radians." - (list '* (/ pi 180.0) x)) + "Convert X from degrees to radians." + (list '* degrees-to-radians x)) (defmacro radians-to-degrees (x) - "Convert ARG from radians to degrees." - (list '* (/ 180.0 pi) x)) + "Convert X from radians to degrees." + (list '* radians-to-degrees x)) (provide 'lisp-float-type) |