Re: odd behaviour with 2x2 matrix floating-point multiplication

[Jordi Gutiérrez Hermoso]

On Tue, 2014-12-16 at 18:24 +0100, Marco Atzeri wrote:
> On 12/16/2014 5:05 PM, Jordi Gutiérrez Hermoso wrote:

> > What does the following C++ program output when you compile it with
> > 32-bit and 64-bit MinGW?
> >
> >      #include <iostream>
> >
> >      int main(){
> >        double eps = 1.0;
> >        while (1 + eps > 1) {
> >          eps /= 2;
> >        }
> >        std::cout << "Machine epsilon is " << 2*eps << std::endl;
> >      }
> >
> 
> I am not a mingw user. ;-) Just the cygwin package manager.
> 
> Neither the original complainer...

Well, what do you use to compile on cygwin? Or does someone else do
the compilation?

- Jordi G. H.