[racket] Question about round

See section 3.1 and 3.2 of the R6RS (http://www.r6rs.org/
<http://www.r6rs.org/> ).
Also see section 3.2 of the Racket Reference.
 
An integer result can be inexact. Consider a result whose absolute error is
greater than 1. Than rounding it gives an inexact result. For example:
 
#lang racket
(= (inexact->exact (round (/ 1.0 1.1e-200)))
   (round (/ #e1.0 #e1.1e-200))) ; -> #f
 
Jos
 

________________________________

From: users-bounces at racket-lang.org [mailto:users-bounces at racket-lang.org]
On Behalf Of Mark Engelberg
Sent: jueves, 29 de septiembre de 2011 23:11
To: users at racket-lang.org
Subject: [racket] Question about round


I'm a bit baffled by this behavior:

> (exact? (round (sin 30)))
#f
> (integer? (round (sin 30)))
#t
> 

How is it possible to have an inexact integer?

I would expect the answer to both of these tests to be true.

Thanks,

Mark