Re: [Slib-discuss] integer->list and negative integers

[Shiro Kawai]

From: Aubrey Jaffer <address@hidden>
Subject: Re: [Slib-discuss] integer->list and negative integers
Date: Sat, 28 May 2011 14:33:38 -0400 (EDT)

> SRFI-60 and SLIB follow the RnRS convention that a "k" prototype
> signifies a non-negative integer:

I see.  That makes sense.

> Integer->list could be extended to handle negative numbers:
> 
>   (integer->list -10)
>   ===
>   (integer->list -10 (integer-length -10))  ==>  (#f #t #t #f)

That's what I did for Gauche, but as you pointed out, it loses
information, e.g. 0 and -1 both maps to ().  Making list->integer
take optional sign argument may be an option, but at the moment
I'll stick to nonnegative arguments.  Thanks.