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Re: Strange behaviour of Do in Compile

• To: mathgroup at smc.vnet.net
• Subject: [mg82201] Re: [mg82125] Strange behaviour of Do in Compile
• From: DrMajorBob <drmajorbob at bigfoot.com>
• Date: Sun, 14 Oct 2007 06:19:39 -0400 (EDT)
• References: <22686441.1192263837882.JavaMail.root@m35>
• Reply-to: drmajorbob at bigfoot.com

Better yet, never use Return at all. I never do.

Bobby

On Sat, 13 Oct 2007 02:41:37 -0500, Andrew Moylan  
<andrew.j.moylan at gmail.com> wrote:

> Compile[{}, Do[If[i > 10, Return[i + 1]], {i, 10}]][]
>
> On my machine, this returns such values as:
> 176792864
> 176795048
> 176797232
>
> The following slight modification always returns the value 11:
>
> Compile[{}, Do[If[i > 10, Return[i]], {i, 10}]][]
>
> Can anyone explain this behaviour?
>
> Anyway, I guess the moral is: always explicitly return a value from  
> Compile,
> and don't rely on the usual return value properties of flow-control
> constructs like Do.
>
>
>



-- 
DrMajorBob at bigfoot.com