459 lines
10 KiB
PHP
459 lines
10 KiB
PHP
/**
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* vim: set ts=4 :
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* =============================================================================
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* SourceMod (C)2004-2008 AlliedModders LLC. All rights reserved.
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* =============================================================================
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*
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* This file is part of the SourceMod/SourcePawn SDK.
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, version 3.0, as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* As a special exception, AlliedModders LLC gives you permission to link the
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* code of this program (as well as its derivative works) to "Half-Life 2," the
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* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
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* by the Valve Corporation. You must obey the GNU General Public License in
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* all respects for all other code used. Additionally, AlliedModders LLC grants
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* this exception to all derivative works. AlliedModders LLC defines further
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* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
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* or <http://www.sourcemod.net/license.php>.
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*
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* Version: $Id$
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*/
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#if defined _float_included
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#endinput
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#endif
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#define _float_included
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/**
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* Converts an integer into a floating point value.
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*
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* @param value Integer to convert.
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* @return Floating point value.
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*/
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native Float:float(value);
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/**
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* Multiplies two floats together.
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*
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* @param oper1 First value.
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* @param oper2 Second value.
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* @return oper1*oper2.
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*/
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native Float:FloatMul(Float:oper1, Float:oper2);
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/**
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* Divides the dividend by the divisor.
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*
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* @param dividend First value.
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* @param divisor Second value.
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* @return dividend/divisor.
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*/
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native Float:FloatDiv(Float:dividend, Float:divisor);
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/**
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* Adds two floats together.
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*
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* @param oper1 First value.
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* @param oper2 Second value.
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* @return oper1+oper2.
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*/
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native Float:FloatAdd(Float:oper1, Float:oper2);
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/**
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* Subtracts oper2 from oper1.
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*
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* @param oper1 First value.
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* @param oper2 Second value.
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* @return oper1-oper2.
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*/
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native Float:FloatSub(Float:oper1, Float:oper2);
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/**
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* Returns the decimal part of a float.
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*
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* @param value Input value.
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* @return Decimal part.
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*/
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native Float:FloatFraction(Float:value);
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/**
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* Rounds a float to the closest integer to zero.
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*
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* @param value Input value to be rounded.
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* @return Rounded value.
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*/
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native RoundToZero(Float:value);
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/**
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* Rounds a float to the next highest integer value.
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*
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* @param value Input value to be rounded.
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* @return Rounded value.
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*/
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native RoundToCeil(Float:value);
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/**
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* Rounds a float to the next lowest integer value.
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*
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* @param value Input value to be rounded.
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* @return Rounded value.
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*/
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native RoundToFloor(Float:value);
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/**
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* Standard IEEE rounding.
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*
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* @param value Input value to be rounded.
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* @return Rounded value.
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*/
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native RoundToNearest(Float:value);
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/**
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* Compares two floats.
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*
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* @param fOne First value.
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* @param fTwo Second value.
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* @return Returns 1 if the first argument is greater than the second argument.
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* Returns -1 if the first argument is smaller than the second argument.
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* Returns 0 if both arguments are equal.
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*/
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native FloatCompare(Float:fOne, Float:fTwo);
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/**
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* Returns the square root of the input value, equivalent to floatpower(value, 0.5).
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*
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* @param value Input value.
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* @return Square root of the value.
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*/
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native Float:SquareRoot(Float:value);
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/**
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* Returns the value raised to the power of the exponent.
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*
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* @param value Value to be raised.
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* @param exponent Value to raise the base.
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* @return value^exponent.
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*/
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native Float:Pow(Float:value, Float:exponent);
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/**
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* Returns the value of raising the input by e.
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*
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* @param value Input value.
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* @return exp(value).
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*/
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native Float:Exponential(Float:value);
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/**
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* Returns the logarithm of any base specified.
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*
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* @param value Input value.
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* @param base Logarithm base to use, default is 10.
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* @return log(value)/log(base).
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*/
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native Float:Logarithm(Float:value, Float:base=10.0);
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/**
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* Returns the sine of the argument.
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*
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* @param value Input value in radians.
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* @return sin(value).
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*/
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native Float:Sine(Float:value);
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/**
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* Returns the cosine of the argument.
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*
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* @param value Input value in radians.
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* @return cos(value).
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*/
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native Float:Cosine(Float:value);
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/**
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* Returns the tangent of the argument.
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*
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* @param value Input value in radians.
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* @return tan(value).
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*/
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native Float:Tangent(Float:value);
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/**
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* Returns an absolute value.
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*
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* @param value Input value.
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* @return Absolute value of the input.
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*/
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native Float:FloatAbs(Float:value);
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/**
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* Returns the arctangent of the input value.
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*
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* @param angle Input value.
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* @return atan(value) in radians.
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*/
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native Float:ArcTangent(Float:angle);
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/**
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* Returns the arccosine of the input value.
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*
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* @param angle Input value.
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* @return acos(value) in radians.
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*/
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native Float:ArcCosine(Float:angle);
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/**
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* Returns the arcsine of the input value.
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*
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* @param angle Input value.
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* @return asin(value) in radians.
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*/
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native Float:ArcSine(Float:angle);
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/**
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* Returns the arctangent2 of the input values.
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*
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* @param x Horizontal value.
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* @param y Vertical value.
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* @return atan2(value) in radians.
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*/
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native Float:ArcTangent2(Float:x, Float:y);
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/**
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* Rounds a floating point number using the "round to nearest" algorithm.
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*
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* @param value Floating point value to round.
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* @return The value rounded to the nearest integer.
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*/
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stock RoundFloat(Float:value)
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{
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return RoundToNearest(value);
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}
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/**
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* User defined operators.
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*
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*/
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#pragma rational Float
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native Float:operator*(Float:oper1, Float:oper2) = FloatMul;
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native Float:operator/(Float:oper1, Float:oper2) = FloatDiv;
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native Float:operator+(Float:oper1, Float:oper2) = FloatAdd;
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native Float:operator-(Float:oper1, Float:oper2) = FloatSub;
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stock Float:operator++(Float:oper)
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{
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return oper+1.0;
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}
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stock Float:operator--(Float:oper)
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{
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return oper-1.0;
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}
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stock Float:operator-(Float:oper)
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{
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return oper^Float:((-1)^((-1)/2)); /* IEEE values are sign/magnitude */
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}
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stock Float:operator*(Float:oper1, oper2)
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{
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return FloatMul(oper1, float(oper2)); /* "*" is commutative */
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}
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stock Float:operator/(Float:oper1, oper2)
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{
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return FloatDiv(oper1, float(oper2));
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}
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stock Float:operator/(oper1, Float:oper2)
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{
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return FloatDiv(float(oper1), oper2);
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}
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stock Float:operator+(Float:oper1, oper2)
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{
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return FloatAdd(oper1, float(oper2)); /* "+" is commutative */
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}
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stock Float:operator-(Float:oper1, oper2)
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{
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return FloatSub(oper1, float(oper2));
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}
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stock Float:operator-(oper1, Float:oper2)
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{
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return FloatSub(float(oper1), oper2);
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}
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stock bool:operator==(Float:oper1, Float:oper2)
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{
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return FloatCompare(oper1, oper2) == 0;
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}
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stock bool:operator==(Float:oper1, oper2)
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{
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return FloatCompare(oper1, float(oper2)) == 0; /* "==" is commutative */
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}
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stock bool:operator!=(Float:oper1, Float:oper2)
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{
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return FloatCompare(oper1, oper2) != 0;
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}
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stock bool:operator!=(Float:oper1, oper2)
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{
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return FloatCompare(oper1, float(oper2)) != 0; /* "==" is commutative */
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}
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stock bool:operator>(Float:oper1, Float:oper2)
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{
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return FloatCompare(oper1, oper2) > 0;
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}
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stock bool:operator>(Float:oper1, oper2)
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{
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return FloatCompare(oper1, float(oper2)) > 0;
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}
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stock bool:operator>(oper1, Float:oper2)
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{
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return FloatCompare(float(oper1), oper2) > 0;
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}
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stock bool:operator>=(Float:oper1, Float:oper2)
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{
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return FloatCompare(oper1, oper2) >= 0;
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}
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stock bool:operator>=(Float:oper1, oper2)
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{
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return FloatCompare(oper1, float(oper2)) >= 0;
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}
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stock bool:operator>=(oper1, Float:oper2)
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{
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return FloatCompare(float(oper1), oper2) >= 0;
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}
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stock bool:operator<(Float:oper1, Float:oper2)
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{
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return FloatCompare(oper1, oper2) < 0;
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}
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stock bool:operator<(Float:oper1, oper2)
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{
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return FloatCompare(oper1, float(oper2)) < 0;
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}
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stock bool:operator<(oper1, Float:oper2)
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{
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return FloatCompare(float(oper1), oper2) < 0;
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}
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stock bool:operator<=(Float:oper1, Float:oper2)
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{
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return FloatCompare(oper1, oper2) <= 0;
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}
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stock bool:operator<=(Float:oper1, oper2)
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{
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return FloatCompare(oper1, float(oper2)) <= 0;
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}
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stock bool:operator<=(oper1, Float:oper2)
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{
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return FloatCompare(float(oper1), oper2) <= 0;
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}
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stock bool:operator!(Float:oper)
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{
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return (_:oper & ((-1)/2)) == 0; /* -1 = all bits to 1; /2 = remove most significant bit (sign)
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works on both 32bit and 64bit systems; no constant required */
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}
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/**
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* Forbidden operators.
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*
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*/
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forward operator%(Float:oper1, Float:oper2);
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forward operator%(Float:oper1, oper2);
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forward operator%(oper1, Float:oper2);
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#define FLOAT_PI 3.1415926535897932384626433832795
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/**
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* Converts degrees to radians.
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*
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* @param angle Degrees.
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* @return Radians.
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*/
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stock Float:DegToRad(Float:angle)
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{
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return (angle*FLOAT_PI)/180;
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}
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/**
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* Converts degrees to radians.
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*
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* @param angle Radians.
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* @return Degrees.
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*/
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stock Float:RadToDeg(Float:angle)
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{
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return (angle*180)/FLOAT_PI;
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}
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/**
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* Returns a random integer in the range [0, 2^31-1].
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*
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* Note: Uniform random number streams are seeded automatically per-plugin.
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*
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* @return Random integer.
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*/
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native GetURandomInt();
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/**
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* Returns a uniform random float in the range [0, 1).
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*
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* Note: Uniform random number streams are seeded automatically per-plugin.
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*
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* @return Uniform random floating-point number.
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*/
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native Float:GetURandomFloat();
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/**
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* Seeds a plugin's uniform random number stream. This is done automatically,
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* so normally it is totally unnecessary to call this.
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*
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* @param seeds Array of numbers to use as seeding data.
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* @param numSeeds Number of seeds in the seeds array.
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* @noreturn
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*/
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native SetURandomSeed(const seeds[], numSeeds);
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/**
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* Seeds a plugin's uniform random number stream. This is done automatically,
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* so normally it is totally unnecessary to call this.
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*
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* @param seed Single seed value.
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* @noreturn
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*/
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stock SetURandomSeedSimple(seed)
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{
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new seeds[1];
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seeds[0] = seed;
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SetURandomSeed(seeds, 1);
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}
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