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Int32.hx
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Int32.hx
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/*
* Copyright (C)2005-2019 Haxe Foundation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
package haxe;
/**
Int32 provides a 32-bit integer with consistent overflow behavior across
all platforms.
**/
abstract Int32(Int) from Int to Int {
@:op(-A) private inline function negate():Int32
return clamp(~this + 1);
@:op(++A) private inline function preIncrement():Int32
return this = clamp(++this);
@:op(A++) private inline function postIncrement():Int32 {
var ret = this++;
this = clamp(this);
return ret;
}
@:op(--A) private inline function preDecrement():Int32
return this = clamp(--this);
@:op(A--) private inline function postDecrement():Int32 {
var ret = this--;
this = clamp(this);
return ret;
}
@:op(A + B) private static inline function add(a:Int32, b:Int32):Int32
return clamp((a : Int) + (b : Int));
@:op(A + B) @:commutative private static inline function addInt(a:Int32, b:Int):Int32
return clamp((a : Int) + (b : Int));
@:op(A + B) @:commutative private static function addFloat(a:Int32, b:Float):Float;
@:op(A - B) private static inline function sub(a:Int32, b:Int32):Int32
return clamp((a : Int) - (b : Int));
@:op(A - B) private static inline function subInt(a:Int32, b:Int):Int32
return clamp((a : Int) - (b : Int));
@:op(A - B) private static inline function intSub(a:Int, b:Int32):Int32
return clamp((a : Int) - (b : Int));
@:op(A - B) private static function subFloat(a:Int32, b:Float):Float;
@:op(A - B) public static function floatSub(a:Float, b:Int32):Float;
#if (js || php || python || lua)
#if js
// on JS we want to try using Math.imul, but we have to assign that function to Int32.mul only once,
// or else V8 will deoptimize it, so we need to be a bit funky with this.
// See https://github.com/HaxeFoundation/haxe/issues/5367 for benchmarks.
@:op(A * B) inline static function mul(a:Int32, b:Int32):Int32
return _mul(a, b);
static var _mul:Int32->Int32->Int32 = untyped if (Math.imul != null)
Math.imul
else
function(a:Int32, b:Int32):Int32 return clamp((a : Int) * ((b : Int) & 0xFFFF) + clamp((a : Int) * ((b : Int) >>> 16) << 16));
#else
@:op(A * B) private static function mul(a:Int32, b:Int32):Int32
return clamp((a : Int) * ((b : Int) & 0xFFFF) + clamp((a : Int) * ((b : Int) >>> 16) << 16));
#end
@:op(A * B) @:commutative private static inline function mulInt(a:Int32, b:Int):Int32
return mul(a, b);
#else
@:op(A * B) private static function mul(a:Int32, b:Int32):Int32;
@:op(A * B) @:commutative private static function mulInt(a:Int32, b:Int):Int32;
#end
@:op(A * B) @:commutative private static function mulFloat(a:Int32, b:Float):Float;
@:op(A / B) private static function div(a:Int32, b:Int32):Float;
@:op(A / B) private static function divInt(a:Int32, b:Int):Float;
@:op(A / B) private static function intDiv(a:Int, b:Int32):Float;
@:op(A / B) private static function divFloat(a:Int32, b:Float):Float;
@:op(A / B) private static function floatDiv(a:Float, b:Int32):Float;
@:op(A % B) private static function mod(a:Int32, b:Int32):Int32;
@:op(A % B) private static function modInt(a:Int32, b:Int):Int;
@:op(A % B) private static function intMod(a:Int, b:Int32):Int;
@:op(A % B) private static function modFloat(a:Int32, b:Float):Float;
@:op(A % B) private static function floatMod(a:Float, b:Int32):Float;
@:op(A == B) private static function eq(a:Int32, b:Int32):Bool;
@:op(A == B) @:commutative private static function eqInt(a:Int32, b:Int):Bool;
@:op(A == B) @:commutative private static function eqFloat(a:Int32, b:Float):Bool;
@:op(A != B) private static function neq(a:Int32, b:Int32):Bool;
@:op(A != B) @:commutative private static function neqInt(a:Int32, b:Int):Bool;
@:op(A != B) @:commutative private static function neqFloat(a:Int32, b:Float):Bool;
@:op(A < B) private static function lt(a:Int32, b:Int32):Bool;
@:op(A < B) private static function ltInt(a:Int32, b:Int):Bool;
@:op(A < B) private static function intLt(a:Int, b:Int32):Bool;
@:op(A < B) private static function ltFloat(a:Int32, b:Float):Bool;
@:op(A < B) private static function floatLt(a:Float, b:Int32):Bool;
@:op(A <= B) private static function lte(a:Int32, b:Int32):Bool;
@:op(A <= B) private static function lteInt(a:Int32, b:Int):Bool;
@:op(A <= B) private static function intLte(a:Int, b:Int32):Bool;
@:op(A <= B) private static function lteFloat(a:Int32, b:Float):Bool;
@:op(A <= B) private static function floatLte(a:Float, b:Int32):Bool;
@:op(A > B) private static function gt(a:Int32, b:Int32):Bool;
@:op(A > B) private static function gtInt(a:Int32, b:Int):Bool;
@:op(A > B) private static function intGt(a:Int, b:Int32):Bool;
@:op(A > B) private static function gtFloat(a:Int32, b:Float):Bool;
@:op(A > B) private static function floatGt(a:Float, b:Int32):Bool;
@:op(A >= B) private static function gte(a:Int32, b:Int32):Bool;
@:op(A >= B) private static function gteInt(a:Int32, b:Int):Bool;
@:op(A >= B) private static function intGte(a:Int, b:Int32):Bool;
@:op(A >= B) private static function gteFloat(a:Int32, b:Float):Bool;
@:op(A >= B) private static function floatGte(a:Float, b:Int32):Bool;
#if (lua || python || php)
@:op(~A) private static inline function complement(a:Int32):Int32
#if lua return lua.Boot.clampInt32(~a); #else return clamp(~a); #end
#else
@:op(~A) private function complement():Int32;
#end
@:op(A & B) private static function and(a:Int32, b:Int32):Int32;
@:op(A & B) @:commutative private static function andInt(a:Int32, b:Int):Int32;
#if (lua || python || php)
@:op(A | B) private static #if (python || php) inline #end function or(a:Int32, b:Int32):Int32
return clamp((a : Int) | (b : Int));
@:op(A | B) @:commutative private #if (python || php) inline #end static function orInt(a:Int32, b:Int):Int32
return clamp((a : Int) | b);
#else
@:op(A | B) private static function or(a:Int32, b:Int32):Int32;
@:op(A | B) @:commutative private static function orInt(a:Int32, b:Int):Int32;
#end
#if (lua || python || php)
@:op(A ^ B) private static #if (python || php) inline #end function xor(a:Int32, b:Int32):Int32
return clamp((a : Int) ^ (b : Int));
@:op(A ^ B) @:commutative private static #if (python || php) inline #end function xorInt(a:Int32, b:Int):Int32
return clamp((a : Int) ^ b);
#else
@:op(A ^ B) private static function xor(a:Int32, b:Int32):Int32;
@:op(A ^ B) @:commutative private static function xorInt(a:Int32, b:Int):Int32;
#end
#if (lua || python || php)
@:op(A >> B) private static #if (python || php) inline #end function shr(a:Int32, b:Int32):Int32
return clamp((a : Int) >> (b : Int));
@:op(A >> B) private static #if (python || php) inline #end function shrInt(a:Int32, b:Int):Int32
return clamp((a : Int) >> b);
@:op(A >> B) private static #if (python || php) inline #end function intShr(a:Int, b:Int32):Int32
return clamp(a >> (b : Int));
#else
@:op(A >> B) private static function shr(a:Int32, b:Int32):Int32;
@:op(A >> B) private static function shrInt(a:Int32, b:Int):Int32;
@:op(A >> B) private static function intShr(a:Int, b:Int32):Int32;
#end
@:op(A >>> B) private static function ushr(a:Int32, b:Int32):Int32;
@:op(A >>> B) private static function ushrInt(a:Int32, b:Int):Int32;
@:op(A >>> B) private static function intUshr(a:Int, b:Int32):Int32;
#if (php || python || lua)
// PHP may be 64-bit, so shifts must be clamped
@:op(A << B) private static inline function shl(a:Int32, b:Int32):Int32
return clamp((a : Int) << (b : Int));
@:op(A << B) private static inline function shlInt(a:Int32, b:Int):Int32
return clamp((a : Int) << b);
@:op(A << B) private static inline function intShl(a:Int, b:Int32):Int32
return clamp(a << (b : Int));
#else
@:op(A << B) private static function shl(a:Int32, b:Int32):Int32;
@:op(A << B) private static function shlInt(a:Int32, b:Int):Int32;
@:op(A << B) private static function intShl(a:Int, b:Int32):Int32;
#end
@:to private inline function toFloat():Float
return this;
/**
Compare `a` and `b` in unsigned mode.
**/
public static function ucompare(a:Int32, b:Int32):Int {
if (a < 0)
return b < 0 ? (~b - ~a) : 1;
return b < 0 ? -1 : (a - b);
}
#if php
static var extraBits:Int = php.Const.PHP_INT_SIZE * 8 - 32;
#end
#if !lua
inline
#end
static function clamp(x:Int):Int {
// force to-int conversion on platforms that require it
#if js
return x | 0;
#elseif php
// we might be on 64-bit php, so sign extend from 32-bit
return (x << extraBits) >> extraBits;
#elseif python
return (python.Syntax.code("{0} % {1}", (x + python.Syntax.opPow(2, 31)), python.Syntax.opPow(2, 32)) : Int) - python.Syntax.opPow(2, 31);
#elseif lua
return lua.Boot.clampInt32(x);
#else
return (x);
#end
}
}