/**

 * vim: set ts=4 :

 * ===============================================================

 * SourceMod (C)2004-2007 AlliedModders LLC.  All rights reserved.

 * ===============================================================

 *

 *  This file is part of the SourceMod/SourcePawn SDK.  This file may only be used 

 * or modified under the Terms and Conditions of its License Agreement, which is found 

 * in LICENSE.txt.  The Terms and Conditions for making SourceMod extensions/plugins 

 * may change at any time.  To view the latest information, see:

 *   http://www.sourcemod.net/license.php

 *

 * Version: $Id$

 */

#if defined _float_included

 #endinput

#endif

#define _float_included

/**

 * Different methods of rounding.

 */

enum floatround_method

{

	floatround_round = 0,		/**< Standard IEEE rounding */

	floatround_floor,			/**< Next lowest integer value. */

	floatround_ceil,			/**< Next highest integer value. */

	floatround_tozero			/** Closest integer to zero. */

};

/**

 * Converts an integer into a floating point value.

 *

 * @param value			Integer to convert.

 * @return				Floating point value.

 */

native Float:float(value);

/**

 * Multiplies two floats together.

 *

 * @param oper1			First value.

 * @param oper2			Second value.

 * @return				oper1*oper2.

 */

native Float:FloatMul(Float:oper1, Float:oper2);

/**

 * Divides the dividend by the divisor.

 *

 * @param dividend		First value.

 * @param divisor		Second value.

 * @return				dividend/divisor.

 */

native Float:FloatDiv(Float:dividend, Float:divisor);

/**

 * Adds two floats together.

 *

 * @param oper1			First value.

 * @param oper2			Second value.

 * @return				oper1+oper2.

 */

native Float:FloatAdd(Float:oper1, Float:oper2);

/**

 * Subtracts oper2 from oper1.

 *

 * @param oper1			First value.

 * @param oper2			Second value.

 * @return				oper1-oper2.

 */

native Float:FloatSub(Float:oper1, Float:oper2);

/**

 * Returns the decimal part of a float.

 *

 * @param value			Input value.

 * @return				Decimal part.

 */

native Float:FloatFraction(Float:value);

/**

 * Rounds a float into an integer number.

 *

 * @param value			Input value to be rounded.

 * @param method		Rounding method to use.

 * @return				Rounded value.

 */

native FloatRound(Float:value, floatround_method:method=floatround_round);

/**

 * Compares two floats.

 *

 * @param fOne			First value.

 * @param fTwo			Second value.

 * @return				Returns 1 if the first argument is greater than the second argument.

 *                      Returns -1 if the first argument is smaller than the second argument.

 *                      Returns 0 if both arguments are equal.

 */

native FloatCompare(Float:fOne, Float:fTwo);

/**

 * Returns the square root of the input value, equivalent to floatpower(value, 0.5).

 *

 * @param value			Input value.

 * @return				Square root of the value.

 */

native Float:SquareRoot(Float:value);

/**

 * Returns the value raised to the power of the exponent.

 *

 * @param value			Value to be raised.

 * @param exponent		Value to raise the base.

 * @return				value^exponent.

 */

native Float:Pow(Float:value, Float:exponent);

/**

 * Returns the value of raising the input by e.

 *

 * @param value			Input value.

 * @return				exp(value).

 */

native Float:Exponential(Float:value);

/**

 * Returns the logarithm of any base specified.

 *

 * @param value			Input value.

 * @param base			Logarithm base to use, default is 10.

 * @return				log(value)/log(base).

 */

native Float:Logarithm(Float:value, Float:base=10.0);

/**

 * Returns the sine of the argument.

 *

 * @param value			Input value in radians.

 * @return				sin(value).

 */

native Float:Sine(Float:value);

/**

 * Returns the cosine of the argument.

 *

 * @param value			Input value in radians.

 * @return				cos(value).

 */

native Float:Cosine(Float:value);

/**

 * Returns the tangent of the argument.

 *

 * @param value			Input value in radians.

 * @return				tan(value).

 */

native Float:Tangent(Float:value);

/**

 * Returns an absolute value.

 *

 * @param value			Input value.

 * @return				Absolute value of the input.

 */

native Float:FloatAbs(Float:value);

/**

 * Returns the arctangent of the input value.

 *

 * @param angle			Input value.

 * @return				atan(value) in radians.

 */

native Float:ArcTangent(Float:angle);

/**

 * Returns the arccosine of the input value.

 *

 * @param angle			Input value.

 * @return				acos(value) in radians.

 */

native Float:ArcCosine(Float:angle);

/**

 * Returns the arcsine of the input value.

 *

 * @param angle			Input value.

 * @return				asin(value) in radians.

 */

native Float:ArcSine(Float:angle);

/**

 * Returns the arctangent2 of the input values.

 *

 * @param x				Horizontal value.

 * @param y				Vertical value.

 * @return				atan2(value) in radians.

 */

native Float:ArcTangent2(Float:x, Float:y);

/**

 * User defined operators.

 *

 */

#pragma rational Float

native Float:operator*(Float:oper1, Float:oper2) = FloatMul;

native Float:operator/(Float:oper1, Float:oper2) = FloatDiv;

native Float:operator+(Float:oper1, Float:oper2) = FloatAdd;

native Float:operator-(Float:oper1, Float:oper2) = FloatSub;

stock Float:operator++(Float:oper)

{

	return oper+1.0;

}

stock Float:operator--(Float:oper)

{

	return oper-1.0;

}

stock Float:operator-(Float:oper)

{

	return oper^Float:((-1)^((-1)/2));				/* IEEE values are sign/magnitude */

}

stock Float:operator*(Float:oper1, oper2)

{

	return FloatMul(oper1, float(oper2));			/* "*" is commutative */

}

stock Float:operator/(Float:oper1, oper2)

{

	return FloatDiv(oper1, float(oper2));

}

stock Float:operator/(oper1, Float:oper2)

{

	return FloatDiv(float(oper1), oper2);

}

stock Float:operator+(Float:oper1, oper2)

{

	return FloatAdd(oper1, float(oper2));			/* "+" is commutative */

}

stock Float:operator-(Float:oper1, oper2)

{

	return FloatSub(oper1, float(oper2));

}

stock Float:operator-(oper1, Float:oper2)

{

	return FloatSub(float(oper1), oper2);

}

stock bool:operator==(Float:oper1, Float:oper2)

{

	return FloatCompare(oper1, oper2) == 0;

}

stock bool:operator==(Float:oper1, oper2)

{

	return FloatCompare(oper1, float(oper2)) == 0; 	/* "==" is commutative */

}

stock bool:operator!=(Float:oper1, Float:oper2)

{

	return FloatCompare(oper1, oper2) != 0;

}

stock bool:operator!=(Float:oper1, oper2)

{

	return FloatCompare(oper1, float(oper2)) != 0; 	/* "==" is commutative */

}

stock bool:operator>(Float:oper1, Float:oper2)

{

	return FloatCompare(oper1, oper2) > 0;

}

stock bool:operator>(Float:oper1, oper2)

{

	return FloatCompare(oper1, float(oper2)) > 0;

}

stock bool:operator>(oper1, Float:oper2)

{

	return FloatCompare(float(oper1), oper2) > 0;

}

stock bool:operator>=(Float:oper1, Float:oper2)

{

	return FloatCompare(oper1, oper2) >= 0;

}

stock bool:operator>=(Float:oper1, oper2)

{

	return FloatCompare(oper1, float(oper2)) >= 0;

}

stock bool:operator>=(oper1, Float:oper2)

{

	return FloatCompare(float(oper1), oper2) >= 0;

}

stock bool:operator<(Float:oper1, Float:oper2)

{

	return FloatCompare(oper1, oper2) < 0;

}

stock bool:operator<(Float:oper1, oper2)

{

	return FloatCompare(oper1, float(oper2)) < 0;

}

stock bool:operator<(oper1, Float:oper2)

{

	return FloatCompare(float(oper1), oper2) < 0;

}

stock bool:operator<=(Float:oper1, Float:oper2)

{

	return FloatCompare(oper1, oper2) <= 0;

}

stock bool:operator<=(Float:oper1, oper2)

{

	return FloatCompare(oper1, float(oper2)) <= 0;

}

stock bool:operator<=(oper1, Float:oper2)

{

	return FloatCompare(float(oper1), oper2) <= 0;

}

stock bool:operator!(Float:oper)

{

	return (_:oper & ((-1)/2)) == 0;		/* -1 = all bits to 1; /2 = remove most significant bit (sign)

											works on both 32bit and 64bit systems; no constant required */

}

/**

 * Forbidden operators.

 *

 */

forward operator%(Float:oper1, Float:oper2);

forward operator%(Float:oper1, oper2);

forward operator%(oper1, Float:oper2);

#define FLOAT_PI 3.1415926535897932384626433832795

/**

 * Converts degrees to radians.

 *

 * @param angle		Degrees.

 * @return			Radians.

 */

stock Float:DegToRad(Float:angle)

{

	return (angle*FLOAT_PI)/180;

}

/**

 * Converts degrees to radians.

 *

 * @param angle		Radians.

 * @return			Degrees.

 */

stock Float:RadToDeg(Float:angle)

{

	return (angle*180)/FLOAT_PI;

}