Reputation: 1406
How to implement the following action?
if( boost::math:: +is_inf (x) )
x= max double;
else if( boost::math:: -is_inf (x) )
x= min double;
I want to preserve the sign of x.
Upvotes: 0
Views: 545
Reputation: 9340
The key here is, you can compare +inf
or -inf
to 0 with <
and >
, so testing the sign is very easy.
if(std::isinf(x))
{
if(x>0)
x = std::numeric_limits<double>::max();
else
x = -std::numeric_limits<double>::max();
}
No needs for boost, if you are using c++11
Upvotes: 5