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Re: Reg: gcc option for printing large number (large double)
- From: Vincent Lefevre <vincent+gcc at vinc17 dot org>
- To: gcc-help at gcc dot gnu dot org
- Date: Mon, 16 Sep 2013 11:46:43 +0200
- Subject: Re: Reg: gcc option for printing large number (large double)
- Authentication-results: sourceware.org; auth=none
- References: <1379046979926-968019 dot post at n5 dot nabble dot com> <BLU177-DS12C419B38FFC924F3C90E2BA250 at phx dot gbl> <523652DF dot 8040400 at aol dot com>
On 2013-09-15 20:37:51 -0400, Tim Prince wrote:
> On 9/15/2013 3:42 PM, Arbol One wrote:
> >Use a 'long long' value instead of a 'double'.
^^^^^^^^^
long double
> >
> >#include <iostream>
> >#include <math.h>
> >
> >using namespace std;
> >int main() {
> > long long temp = 0.0;
^^^^^^^^^
long double
> > temp = pow(2, 2000);
> > cout << "The value of tmp is: " << temp << endl;
> >
> > return 0;
> >}
> >
> :s/pow/powl/
> but not all math libraries invoked by some gcc implementations will work.
And on some platforms (ARM, PowerPC), "long double" has the same range
of "double".
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <http://www.vinc17.net/>
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Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)