numeric_limits::quiet_NaN
Returns the representation of a quiet not a number (NAN) for the type.
static Type quiet_NaN( ) throw( );
Return Value
The representation of a quiet NAN for the type.
Remarks
The return value is meaningful only if has_quiet_NaN is true.
Example
// numeric_limits_quiet_nan.cpp
// compile with: /EHsc
#include <iostream>
#include <limits>
using namespace std;
int main( )
{
cout << "The quiet NaN for type float is: "
<< numeric_limits<float>::quiet_NaN( )
<< endl;
cout << "The quiet NaN for type int is: "
<< numeric_limits<int>::quiet_NaN( )
<< endl;
cout << "The quiet NaN for type long double is: "
<< numeric_limits<long double>::quiet_NaN( )
<< endl;
}
The quiet NaN for type float is: 1.#QNAN
The quiet NaN for type int is: 0
The quiet NaN for type long double is: 1.#QNAN
Requirements
Header: <limits>
Namespace: std