gcc compilation on amd opteron and precision

Nathan Sidwell nathan@codesourcery.com
Sat May 7 13:49:00 GMT 2005


Muge Unel wrote:

> p= (long double) 1.0 / (long double) 3.0;
> q = (long double) p *  (long double) 3.0 -  (long double) 1.0;
> printf ("1 /3 is:              %.30e\n", p);
> printf ("(1 / 3) x 3 - 1 is:   %.30e\n", q);

you probably want %.30Le format if p and q are indeed long doubles,
as man -S3 printf tells you.

nathan


-- 
Nathan Sidwell    ::   http://www.codesourcery.com   ::     CodeSourcery LLC
nathan@codesourcery.com    ::     http://www.planetfall.pwp.blueyonder.co.uk



More information about the Gcc-help mailing list