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Subject: Re: [boost] [numeric_limits] min() for floating point versus integers (Was: [xint] Third release is ready, requesting preliminary review)
From: Stewart, Robert (Robert.Stewart_at_[hidden])
Date: 2010-05-04 10:22:40

DE wrote:
> Stewart, Robert wrote :
> > DE wrote:
> >>
> >> typedef std::numeric_limits<type> traits;
> >> const type realy_min = traits::is_integer ? traits::min() :
> >> -traits::max();
> > That only works for unsigned types.
> it does work for bounded signed and unsigned integers, unbounded
> unsigned integers and also for floating point values (with
> denormalization)

Signed integer types use two's complement, so the absolute value of the largest positive and largest negative value differs.

Rob Stewart robert.stewart_at_[hidden]
Software Engineer, Core Software using std::disclaimer;
Susquehanna International Group, LLP

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