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Re: bit_size_type - a data type?
On Mon, May 12, 2008 at 1:26 PM, Richard Kenner
<kenner@vlsi1.ultra.nyu.edu> wrote:
> > bitsizetype is a type that can hold any values of sizetype *
> > BITS_PER_UNIT so we can safely do bit-size calculations without overflow.
> > This type shouldn't end up used in code though.
>
> Unfortunately, it does, though not in C. Ada's 'Size attribute returns
> the size in bits, so the proper type for that computations is bitsizetype,
> though many computations end up being constant-folded.
I gues you'll get funny effects then, as for Nbit sizetype there's
usually no valid
mode for (N+8)bit bitsizetype. In fact, I believe bitsizetype simply
"inherits" the
mode from sizetype.
Richard.