tb_math.h

#ifndef _TurtleBrains_Math_h_
#define _TurtleBrains_Math_h_

#include "tb_constants.h"
#include <cmath>

namespace TurtleBrains
{
    namespace Math
    {
        inline bool IsEqual(const float leftValue, const float rightValue, const float tolerance = tbMath::kTolerance)
        {
            return fabs(leftValue - rightValue) <= tolerance;
        }

        inline bool IsZero(const float value, const float tolerance = tbMath::kTolerance)
        {
            return (fabs(value)) <= tolerance;
        }

        template <typename T> const T& Maximum(const T& leftValue, const T& rightValue)
        {
            return (leftValue < rightValue) ? rightValue : leftValue;
        }

        template <typename T> const T& Minimum(const T& leftValue, const T& rightValue)
        {
            return (leftValue < rightValue) ? leftValue : rightValue;
        }

        template <typename T> const T& Clamp(const T& value, const T& minimumValue, const T& maximumValue)
        {
            if (value < minimumValue)   return minimumValue;
            if (maximumValue < value)   return maximumValue;
            return value;
        }

    }; /* namespace Math */
}; /* namespace TurtleBrains */

namespace tbMath = TurtleBrains::Math;

#endif /* _TurtleBrains_Math_h_ */