$#include "MathDefs.h"

static const float M_PI;

static const int M_MIN_INT;
static const int M_MAX_INT;
static const unsigned M_MIN_UNSIGNED;
static const unsigned M_MAX_UNSIGNED;

static const float M_EPSILON;
static const float M_LARGE_EPSILON;
static const float M_MIN_NEARCLIP;
static const float M_MAX_FOV;
static const float M_LARGE_VALUE;
static const float M_INFINITY;
static const float M_DEGTORAD;
static const float M_DEGTORAD_2;
static const float M_RADTODEG;

/// Intersection test result.
enum Intersection
{
    OUTSIDE,
    INTERSECTS,
    INSIDE
};

/// Linear interpolation between two float values.
inline float Lerp(float lhs, float rhs, float t);
/// Return the smaller of two floats.
inline float Min(float lhs, float rhs);
/// Return the larger of two floats.
inline float Max(float lhs, float rhs);
/// Return absolute value of a float.
inline float Abs(float value);

/// Clamp a float to a range.
inline float Clamp(float value, float min, float max);

/// Check whether two floating point values are equal within accuracy.
inline bool Equals(float lhs, float rhs);
/// Return the smaller of two integers.
inline int Min(int lhs, int rhs);
/// Return the larger of two integers.
inline int Max(int lhs, int rhs);
/// Return absolute value of an integer
inline int Abs(int value);

/// Clamp an integer to a range.
inline int Clamp(int value, int min, int max);

/// Check whether an unsigned integer is a power of two.
inline bool IsPowerOfTwo(unsigned value);

/// Round up to next power of two.
inline unsigned NextPowerOfTwo(unsigned value);

/// Update a hash with the given 8-bit value using the SDBM algorithm.
inline unsigned SDBMHash(unsigned hash, unsigned char c);
/// Return a random float between 0.0 (inclusive) and 1.0 (exclusive.)
inline float Random();
/// Return a random float between 0.0 and range, inclusive from both ends.
inline float Random(float range);
/// Return a random integer between 0 and range - 1.
inline int Random @ RandomInt (int range);