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From: us on 17 Jul 2010 06:49
Walter Roberson <roberson(a)hushmail.com> wrote in message <i1qjif$mg3$1(a)canopus.cc.umanitoba.ca>...
> us wrote:
>
> > one of the solutions
> > - if(f) by FLOAT you mean a SINGLE precision data...
> >
> > v=pi; % <- a DOUBLE by default...
> > hv=num2hex(v)
> > % hv = 400921fb54442d18
> > dv=hex2num(hv);
> > isequal(dv,pi)
> > % ans = 1
> > sv=single(hex2num(hv));
> > isequal(sv,single(pi))
> > % ans = 1
> > num2hex(sv)
> > % ans = 40490fdb
>
> num2hex() applied to a single will print out the hex equivalent of the single,
> but hex2num() applied to a sequence of hex digits shorter than would be the
> case for a double, implicitly pads with hex 0 to reach the size for a double
> and converts that. There is no option available to num2hex to tell it to
> interpret the hex as a single. This does make a difference as the
> representation of a single is not just a shorter version of the representation
> of a double.

of course...
but i showed something different...
see also the results of ISEQUAL...

us
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