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Re: rcparse.y: unary negation of unsigned type
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From: |
Nick Clifton |
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Subject: |
Re: rcparse.y: unary negation of unsigned type |
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Date: |
08 Feb 2003 09:45:35 +0000 |
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User-agent: |
Gnus/5.0808 (Gnus v5.8.8) Emacs/21.1 |
Hi Perry,
> $$.val = - $2.val;
>
> Isn't that .val making it an unsigned type, in which case the
> unary minus does... what ?
Actually it works. C promotes val to (signed long), negates it, and
then promotes the result back to (unsigned long).
Cheers
Nick