Re: [Boost-users] Does boost have a float-to-integer conversion?

From: Johnathan Bunn (darksage_at_[hidden])
Date: 2008-02-07 14:38:31

On Feb 7, 2008 9:23 AM, linux <linux_at_[hidden]> wrote:

> Actually, I was hoping Boost had an float-to-integer conversion so I
> could look at the implementation.  I need to convert a float to int, but
> not in OpenGL Shading Language, which is "C like" but it doesn't have
> pointers, bit-shifts etc.
>
> Ed
>
>
> Frank Mori Hess wrote:
> > On Thursday 07 February 2008 07:40 am, Fernando Cacciola wrote:
> >
> >> Then I suspect you don't really want to "convert" the float to int but
> to
> >> get at the value-representation of the float.
> >> If that's the case, you can do this:
> >>
> >> char* float_value_rep =
> >> static_cast<char*>(static_cast<void*>(&your_float));
> >>
> >
> > Isn't this what reinterpret_cast is for?  It wouldn't require bouncing
> through
> > a void*.  Also, to the original poster, don't succumb to the temptation
> to
> > cast to anything other than a char* (like an int*) or you'll end up in
> strict
> > aliasing violation hell.
> >
> >
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> >
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