From f77467311a70a45a157df99087d7c8c5b7c93499 Mon Sep 17 00:00:00 2001 From: Robby Findler Date: Tue, 20 Mar 2012 16:09:38 -0500 Subject: [PATCH] specify 'angle's range --- collects/scribblings/reference/numbers.scrbl | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/collects/scribblings/reference/numbers.scrbl b/collects/scribblings/reference/numbers.scrbl index fd4ef52e6e..c591ef40f5 100644 --- a/collects/scribblings/reference/numbers.scrbl +++ b/collects/scribblings/reference/numbers.scrbl @@ -664,8 +664,12 @@ Returns the imaginary part of the complex number @racket[z] in @defproc[(angle [z number?]) real?]{ Returns the angle of the complex number @racket[z] in polar coordinates. + + The result is guaranteed to be between @racket[(- pi)] and + @racket[pi], possibly equal to @racket[pi] (but never equal + to @racket[(- pi)]). -@mz-examples[(angle -3) (angle 3.0) (angle 3+4i) (angle +inf.0+inf.0i)]} +@mz-examples[(angle -3) (angle 3.0) (angle 3+4i) (angle +inf.0+inf.0i) (angle -1)]} @; ------------------------------------------------------------------------ @subsection{Bitwise Operations}