Re: Sparse matrix problem

[David Bateman]

Dmitri A. Sergatskov wrote:
> On 1/3/07, John W. Eaton <address@hidden> wrote:
>
>>
>> What happens when you compile and run the following program?
>>
>>   #include <complex>
>>   #include <iostream>
>>
>>   int
>>   main (void)
>>   {
>>     std::cout << std::complex<double> (1.0, 1.0) / 0.0 << std::endl;
>>     return 0;
>>   }
>>
>> With g++ 4.1.2 on my system, it prints (nan,nan).  That seems like a
>> bug to me, but maybe it is standard conforming (and if it is, wtf?!?)?
>>
>
> BTW, if I compile it with optimization on it would give (inf, inf).
>
> Dmitri.
> -- 
>
With 4.0.1 and -O3 it still gives (nan,nan)

D.

-- 
David Bateman                                address@hidden
Motorola Labs - Paris                        +33 1 69 35 48 04 (Ph) 
Parc Les Algorithmes, Commune de St Aubin    +33 6 72 01 06 33 (Mob) 
91193 Gif-Sur-Yvette FRANCE                  +33 1 69 35 77 01 (Fax) 

The information contained in this communication has been classified as: 

[x] General Business Information 
[ ] Motorola Internal Use Only 
[ ] Motorola Confidential Proprietary