Reg: gcc option for printing large number (large double)

[Balamurugan <emailstorbala@gmail.com>]

Hi,

I have an issue in printing a large number in a c program. Please find below the code snippet :

#include <math.h>

int main()
{
        double temp = 0.0;

        temp = pow(2, 2000);

        printf("The value of temp is %lf\n", temp);

        return 0;
}

I compiled and ran as below:

[balamurugan@balamurugan C_Programs]$ gcc test.c -o test
[balamurugan@balamurugan C_Programs]$ ./test
The value of temp is inf

But for the same _expression_, I am able to get the value from python,

[balamurugan@balamurugan C_Programs]$ python
Python 2.6.6 (r266:84292, Feb 22 2013, 00:00:18)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-3)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> pow(2,2000)
114813069527425452423283320117768198402231770208869520047764273682576626139237031385665948631650626991844596463898746277344711896086305533142593135616665318539129989145312280000688779148240044871428926990063486244781615463646388363947317026040466353970904996558162398808944629605623311649536164221970332681344168908984458505602379484807914058900934776500429002716706625830522008132236281291761267883317206598995396418127021779858404042159853183251540889433902091920554957783589672039160081957216630582755380425583726015528348786419432054508915275783882625175435528800822842770817965453762184851149029376L
>>>


I know that in gcc, there is an option for getting this done. Can any body help with that option?

Thanks and Regards,
Balamurugan R