[Diskussionsthema] 2011

[Steffen]

#define isfinite(f) ((*(unsigned long *)&f & 0x7f800000) != 0x7f800000)

Noch nen gecopypasteder c++ code

#include <iostream>
#include <limits>

int main()
{
if (std::numeric_limits<double>::has_infinity)
std::cout << std::numeric_limits<double>::infinity() << std::endl;

if (std::numeric_limits<double>::has_quiet_NaN)
std::cout << std::numeric_limits<double>::quiet_NaN() << std::endl;

if (std::numeric_limits<double>:ignaling_NaN)
std::cout << std::numeric_limits<double>:ignaling_NaN() << std::endl;

return 0;
}