numeric_limits::round_style
Returns a value that describes the various methods that an implementation can choose for rounding a floating-point value to an integer value.
static const float_round_style round_style = round_toward_zero;
Return Value
A value from the float_round_style enumeration that describes the rounding style.
Remarks
The member stores a value that describes the various methods that an implementation can choose for rounding a floating-point value to an integer value.
The round style is hard coded in this implementation, so even if the program starts up with a different rounding mode, that value will not change.
Example
// numeric_limits_round_style.cpp
// compile with: /EHsc
#include <iostream>
#include <float.h>
#include <limits>
using namespace std;
int main( )
{
cout << "The rounding style for a double type is: "
<< numeric_limits<double>::round_style << endl;
_controlfp_s(NULL,_RC_DOWN,_MCW_RC );
cout << "The rounding style for a double type is now: "
<< numeric_limits<double>::round_style << endl;
cout << "The rounding style for an int type is: "
<< numeric_limits<int>::round_style << endl;
}
The rounding style for a double type is: 1 The rounding style for a double type is now: 1 The rounding style for an int type is: 0
Requirements
Header: <limits>
Namespace: std