/**

  * 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;

 }