futil namespace

Overview

Declared in "futil.h"

    futil namespace has eight functions for floating-point operations.

namespace futil
{
   // logical comparisons:
   bool eq(double dLhs, double dRhs);  // is dLhs == dRhs ?
   bool neq(double dLhs, double dRhs); // is dLhs != dRhs ?
   bool gt(double dLhs, double dRhs);  // is dLhs > dRhs ?
   bool gte(double dLhs, double dRhs); // is dLhs >= dRhs ?
   bool lt(double dLhs, double dRhs);  // is dLhs < dRhs ?
   bool lte(double dLhs, double dRhs); // is dLhs <= dRhs ?
           
   void round(double &dVal, int nDecimal); // round a value            
   int nsgn(double dVal);                  // sign of a value 
}

Remarks

• round(dVal, nDecimal) is to round a value (dVal) to a given number of decimal places (nDecimal).
  
  
• nsgn(dVal) determines the sign of a given value (dVal). It returns 1 if the value is positive, -1 if negative, and 0 if value is zero.