HaxeFoundation.haxe/std/Math.hx

/*
 * Copyright (c) 2005, The haXe Project Contributors
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE HAXE PROJECT CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE HAXE PROJECT CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

/**
	This class defines mathematical functions and constants.
**/
extern class Math
{
	static var PI(default,null) : Float;
	static var NaN(default,null) : Float;
	static var NEGATIVE_INFINITY(default,null) : Float;
	static var POSITIVE_INFINITY(default,null) : Float;

	static function abs(v:Float):Float;
	static function min(a:Float,b:Float):Float;
	static function max(a:Float,b:Float):Float;
	static function sin(v:Float):Float;
	static function cos(v:Float):Float;
	static function atan2(y:Float,x:Float):Float;
	static function tan(v:Float):Float;
	static function exp(v:Float):Float;
	static function log(v:Float):Float;
	static function sqrt(v:Float):Float;
	static function round(v:Float):Int;
	static function floor(v:Float):Int;
	static function ceil(v:Float):Int;
	static function atan(v:Float):Float;
	static function asin(v:Float):Float;
	static function acos(v:Float):Float;
	static function pow(v:Float,exp:Float):Float;
	static function random() : Float;

	static function isFinite( f : Float ) : Bool;
	static function isNaN( f : Float ) : Bool;

	private static function __init__() : Void untyped {
	#if flash9
		NaN = __global__["Number"].NaN;
		NEGATIVE_INFINITY = __global__["Number"].NEGATIVE_INFINITY;
		POSITIVE_INFINITY = __global__["Number"].POSITIVE_INFINITY;
	#else
		Math.__name__ = ["Math"];
		Math.NaN = Number["NaN"];
		Math.NEGATIVE_INFINITY = Number["NEGATIVE_INFINITY"];
		Math.POSITIVE_INFINITY = Number["POSITIVE_INFINITY"];
	#end
	#if js
		$hxClasses['Math'] = Math;
	#end
		Math.isFinite = function(i) {
			return
			#if flash9
			__global__["isFinite"](i);
			#elseif flash
			_global["isFinite"](i);
			#elseif js
			__js__("isFinite")(i);
			#else
			false;
			#end
		};
		Math.isNaN = function(i) {
			return
			#if flash9
			__global__["isNaN"](i);
			#elseif flash
			_global["isNaN"](i);
			#elseif js
			__js__("isNaN")(i);
			#else
			false;
			#end
		};
	}

}