Source/JavaScriptCore/runtime/MathObject.cpp - WebKit - Git at Google

 /*
  *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
  *  Copyright (C) 2007, 2008, 2013, 2015 Apple Inc. All Rights Reserved.
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Lesser General Public
  *  License as published by the Free Software Foundation; either
  *  version 2 of the License, or (at your option) any later version.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  *  Lesser General Public License for more details.
  *
  *  You should have received a copy of the GNU Lesser General Public
  *  License along with this library; if not, write to the Free Software
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  *
  */

 #include "config.h"
 #include "MathObject.h"

 #include "Lookup.h"
 #include "MathCommon.h"
 #include "ObjectPrototype.h"
 #include "JSCInlines.h"
 #include <time.h>
 #include <wtf/Assertions.h>
 #include <wtf/MathExtras.h>
 #include <wtf/Vector.h>

 namespace JSC {

 STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(MathObject);

 EncodedJSValue JSC_HOST_CALL mathProtoFuncACos(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncACosh(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncASin(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncASinh(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncATan(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncATanh(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncATan2(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncCbrt(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncCeil(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncClz32(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncCos(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncCosh(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncExp(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncExpm1(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncFround(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncHypot(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncLog(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncLog1p(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncLog10(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncLog2(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncMax(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncMin(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncPow(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncRandom(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncRound(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncSign(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncSin(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncSinh(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncSqrt(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncTan(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncTanh(ExecState*);
 EncodedJSValue JSC_HOST_CALL mathProtoFuncIMul(ExecState*);

 const ClassInfo MathObject::s_info = { "Math", &Base::s_info, 0, CREATE_METHOD_TABLE(MathObject) };

 MathObject::MathObject(VM& vm, Structure* structure)
     : JSNonFinalObject(vm, structure)
 {
 }

 void MathObject::finishCreation(VM& vm, JSGlobalObject* globalObject)
 {
     Base::finishCreation(vm);
     ASSERT(inherits(info()));

     putDirectWithoutTransition(vm, Identifier::fromString(&vm, "E"), jsNumber(exp(1.0)), DontDelete | DontEnum | ReadOnly);
     putDirectWithoutTransition(vm, Identifier::fromString(&vm, "LN2"), jsNumber(log(2.0)), DontDelete | DontEnum | ReadOnly);
     putDirectWithoutTransition(vm, Identifier::fromString(&vm, "LN10"), jsNumber(log(10.0)), DontDelete | DontEnum | ReadOnly);
     putDirectWithoutTransition(vm, Identifier::fromString(&vm, "LOG2E"), jsNumber(1.0 / log(2.0)), DontDelete | DontEnum | ReadOnly);
     putDirectWithoutTransition(vm, Identifier::fromString(&vm, "LOG10E"), jsNumber(0.4342944819032518), DontDelete | DontEnum | ReadOnly);
     putDirectWithoutTransition(vm, Identifier::fromString(&vm, "PI"), jsNumber(piDouble), DontDelete | DontEnum | ReadOnly);
     putDirectWithoutTransition(vm, Identifier::fromString(&vm, "SQRT1_2"), jsNumber(sqrt(0.5)), DontDelete | DontEnum | ReadOnly);
     putDirectWithoutTransition(vm, Identifier::fromString(&vm, "SQRT2"), jsNumber(sqrt(2.0)), DontDelete | DontEnum | ReadOnly);
     putDirectWithoutTransition(vm, vm.propertyNames->toStringTagSymbol, jsString(&vm, "Math"), DontEnum | ReadOnly);

     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "abs"), 1, mathProtoFuncAbs, AbsIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "acos"), 1, mathProtoFuncACos, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "asin"), 1, mathProtoFuncASin, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "atan"), 1, mathProtoFuncATan, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "acosh"), 1, mathProtoFuncACosh, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "asinh"), 1, mathProtoFuncASinh, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "atanh"), 1, mathProtoFuncATanh, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "atan2"), 2, mathProtoFuncATan2, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "cbrt"), 1, mathProtoFuncCbrt, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "ceil"), 1, mathProtoFuncCeil, CeilIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "clz32"), 1, mathProtoFuncClz32, Clz32Intrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "cos"), 1, mathProtoFuncCos, CosIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "cosh"), 1, mathProtoFuncCosh, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "exp"), 1, mathProtoFuncExp, ExpIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "expm1"), 1, mathProtoFuncExpm1, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "floor"), 1, mathProtoFuncFloor, FloorIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "fround"), 1, mathProtoFuncFround, FRoundIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "hypot"), 2, mathProtoFuncHypot, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "log"), 1, mathProtoFuncLog, LogIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "log10"), 1, mathProtoFuncLog10, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "log1p"), 1, mathProtoFuncLog1p, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "log2"), 1, mathProtoFuncLog2, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "max"), 2, mathProtoFuncMax, MaxIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "min"), 2, mathProtoFuncMin, MinIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "pow"), 2, mathProtoFuncPow, PowIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "random"), 0, mathProtoFuncRandom, RandomIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "round"), 1, mathProtoFuncRound, RoundIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "sign"), 1, mathProtoFuncSign, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "sin"), 1, mathProtoFuncSin, SinIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "sinh"), 1, mathProtoFuncSinh, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "sqrt"), 1, mathProtoFuncSqrt, SqrtIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "tan"), 1, mathProtoFuncTan, TanIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "tanh"), 1, mathProtoFuncTanh, NoIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "trunc"), 1, mathProtoFuncTrunc, TruncIntrinsic, DontEnum);
     putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "imul"), 2, mathProtoFuncIMul, IMulIntrinsic, DontEnum);
 }

 // ------------------------------ Functions --------------------------------

 EncodedJSValue JSC_HOST_CALL mathProtoFuncAbs(ExecState* exec)
 {
     return JSValue::encode(jsNumber(fabs(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncACos(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(acos(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncASin(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(asin(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncATan(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(atan(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncATan2(ExecState* exec)
 {
     double arg0 = exec->argument(0).toNumber(exec);
     double arg1 = exec->argument(1).toNumber(exec);
     return JSValue::encode(jsDoubleNumber(atan2(arg0, arg1)));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncCeil(ExecState* exec)
 {
     return JSValue::encode(jsNumber(ceil(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncClz32(ExecState* exec)
 {
     VM& vm = exec->vm();
     auto scope = DECLARE_THROW_SCOPE(vm);
     uint32_t value = exec->argument(0).toUInt32(exec);
     if (UNLIKELY(scope.exception()))
         return JSValue::encode(jsNull());
     return JSValue::encode(JSValue(clz32(value)));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncCos(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(cos(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncExp(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(exp(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncFloor(ExecState* exec)
 {
     return JSValue::encode(jsNumber(floor(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncHypot(ExecState* exec)
 {
     VM& vm = exec->vm();
     auto scope = DECLARE_THROW_SCOPE(vm);
     unsigned argsCount = exec->argumentCount();
     double max = 0;
     Vector<double, 8> args;
     args.reserveInitialCapacity(argsCount);
     for (unsigned i = 0; i < argsCount; ++i) {
         args.uncheckedAppend(exec->uncheckedArgument(i).toNumber(exec));
         if (UNLIKELY(scope.exception()))
             return JSValue::encode(jsNull());
         if (std::isinf(args[i]))
             return JSValue::encode(jsDoubleNumber(+std::numeric_limits<double>::infinity()));
         max = std::max(fabs(args[i]), max);
     }
     if (!max)
         max = 1;
     // Kahan summation algorithm significantly reduces the numerical error in the total obtained.
     double sum = 0;
     double compensation = 0;
     for (double argument : args) {
         double scaledArgument = argument / max;
         double summand = scaledArgument * scaledArgument - compensation;
         double preliminary = sum + summand;
         compensation = (preliminary - sum) - summand;
         sum = preliminary;
     }
     return JSValue::encode(jsDoubleNumber(sqrt(sum) * max));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncLog(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(log(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncMax(ExecState* exec)
 {
     unsigned argsCount = exec->argumentCount();
     double result = -std::numeric_limits<double>::infinity();
     for (unsigned k = 0; k < argsCount; ++k) {
         double val = exec->uncheckedArgument(k).toNumber(exec);
         if (std::isnan(val)) {
             result = PNaN;
         } else if (val > result || (!val && !result && !std::signbit(val)))
             result = val;
     }
     return JSValue::encode(jsNumber(result));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncMin(ExecState* exec)
 {
     unsigned argsCount = exec->argumentCount();
     double result = +std::numeric_limits<double>::infinity();
     for (unsigned k = 0; k < argsCount; ++k) {
         double val = exec->uncheckedArgument(k).toNumber(exec);
         if (std::isnan(val)) {
             result = PNaN;
         } else if (val < result || (!val && !result && std::signbit(val)))
             result = val;
     }
     return JSValue::encode(jsNumber(result));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncPow(ExecState* exec)
 {
     // ECMA 15.8.2.1.13

     double arg = exec->argument(0).toNumber(exec);
     double arg2 = exec->argument(1).toNumber(exec);

     return JSValue::encode(JSValue(operationMathPow(arg, arg2)));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncRandom(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(exec->lexicalGlobalObject()->weakRandomNumber()));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncRound(ExecState* exec)
 {
     return JSValue::encode(jsNumber(jsRound(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncSign(ExecState* exec)
 {
     double arg = exec->argument(0).toNumber(exec);
     if (std::isnan(arg))
         return JSValue::encode(jsNaN());
     if (!arg)
         return JSValue::encode(std::signbit(arg) ? jsNumber(-0.0) : jsNumber(0));
     return JSValue::encode(jsNumber(std::signbit(arg) ? -1 : 1));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncSin(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(sin(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncSqrt(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(sqrt(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncTan(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(tan(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncIMul(ExecState* exec)
 {
     VM& vm = exec->vm();
     auto scope = DECLARE_THROW_SCOPE(vm);
     int32_t left = exec->argument(0).toInt32(exec);
     if (UNLIKELY(scope.exception()))
         return JSValue::encode(jsNull());
     int32_t right = exec->argument(1).toInt32(exec);
     return JSValue::encode(jsNumber(left * right));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncACosh(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(acosh(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncASinh(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(asinh(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncATanh(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(atanh(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncCbrt(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(cbrt(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncCosh(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(cosh(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncExpm1(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(expm1(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncFround(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(static_cast<float>(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncLog1p(ExecState* exec)
 {
     double value = exec->argument(0).toNumber(exec);
     if (value == 0)
         return JSValue::encode(jsDoubleNumber(value));
     return JSValue::encode(jsDoubleNumber(log1p(value)));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncLog10(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(log10(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncLog2(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(log2(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncSinh(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(sinh(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncTanh(ExecState* exec)
 {
     return JSValue::encode(jsDoubleNumber(tanh(exec->argument(0).toNumber(exec))));
 }

 EncodedJSValue JSC_HOST_CALL mathProtoFuncTrunc(ExecState*exec)
 {
     return JSValue::encode(jsNumber(exec->argument(0).toIntegerPreserveNaN(exec)));
 }

 } // namespace JSC
	/*
	* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
	* Copyright (C) 2007, 2008, 2013, 2015 Apple Inc. All Rights Reserved.
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	*
	*/

	#include "config.h"
	#include "MathObject.h"

	#include "Lookup.h"
	#include "MathCommon.h"
	#include "ObjectPrototype.h"
	#include "JSCInlines.h"
	#include <time.h>
	#include <wtf/Assertions.h>
	#include <wtf/MathExtras.h>
	#include <wtf/Vector.h>

	namespace JSC {

	STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(MathObject);

	EncodedJSValue JSC_HOST_CALL mathProtoFuncACos(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncACosh(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncASin(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncASinh(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncATan(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncATanh(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncATan2(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncCbrt(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncCeil(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncClz32(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncCos(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncCosh(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncExp(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncExpm1(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncFround(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncHypot(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncLog(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncLog1p(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncLog10(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncLog2(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncMax(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncMin(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncPow(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncRandom(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncRound(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncSign(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncSin(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncSinh(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncSqrt(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncTan(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncTanh(ExecState*);
	EncodedJSValue JSC_HOST_CALL mathProtoFuncIMul(ExecState*);

	const ClassInfo MathObject::s_info = { "Math", &Base::s_info, 0, CREATE_METHOD_TABLE(MathObject) };

	MathObject::MathObject(VM& vm, Structure* structure)
	: JSNonFinalObject(vm, structure)
	{
	}

	void MathObject::finishCreation(VM& vm, JSGlobalObject* globalObject)
	{
	Base::finishCreation(vm);
	ASSERT(inherits(info()));

	putDirectWithoutTransition(vm, Identifier::fromString(&vm, "E"), jsNumber(exp(1.0)), DontDelete \| DontEnum \| ReadOnly);
	putDirectWithoutTransition(vm, Identifier::fromString(&vm, "LN2"), jsNumber(log(2.0)), DontDelete \| DontEnum \| ReadOnly);
	putDirectWithoutTransition(vm, Identifier::fromString(&vm, "LN10"), jsNumber(log(10.0)), DontDelete \| DontEnum \| ReadOnly);
	putDirectWithoutTransition(vm, Identifier::fromString(&vm, "LOG2E"), jsNumber(1.0 / log(2.0)), DontDelete \| DontEnum \| ReadOnly);
	putDirectWithoutTransition(vm, Identifier::fromString(&vm, "LOG10E"), jsNumber(0.4342944819032518), DontDelete \| DontEnum \| ReadOnly);
	putDirectWithoutTransition(vm, Identifier::fromString(&vm, "PI"), jsNumber(piDouble), DontDelete \| DontEnum \| ReadOnly);
	putDirectWithoutTransition(vm, Identifier::fromString(&vm, "SQRT1_2"), jsNumber(sqrt(0.5)), DontDelete \| DontEnum \| ReadOnly);
	putDirectWithoutTransition(vm, Identifier::fromString(&vm, "SQRT2"), jsNumber(sqrt(2.0)), DontDelete \| DontEnum \| ReadOnly);
	putDirectWithoutTransition(vm, vm.propertyNames->toStringTagSymbol, jsString(&vm, "Math"), DontEnum \| ReadOnly);

	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "abs"), 1, mathProtoFuncAbs, AbsIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "acos"), 1, mathProtoFuncACos, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "asin"), 1, mathProtoFuncASin, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "atan"), 1, mathProtoFuncATan, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "acosh"), 1, mathProtoFuncACosh, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "asinh"), 1, mathProtoFuncASinh, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "atanh"), 1, mathProtoFuncATanh, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "atan2"), 2, mathProtoFuncATan2, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "cbrt"), 1, mathProtoFuncCbrt, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "ceil"), 1, mathProtoFuncCeil, CeilIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "clz32"), 1, mathProtoFuncClz32, Clz32Intrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "cos"), 1, mathProtoFuncCos, CosIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "cosh"), 1, mathProtoFuncCosh, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "exp"), 1, mathProtoFuncExp, ExpIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "expm1"), 1, mathProtoFuncExpm1, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "floor"), 1, mathProtoFuncFloor, FloorIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "fround"), 1, mathProtoFuncFround, FRoundIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "hypot"), 2, mathProtoFuncHypot, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "log"), 1, mathProtoFuncLog, LogIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "log10"), 1, mathProtoFuncLog10, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "log1p"), 1, mathProtoFuncLog1p, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "log2"), 1, mathProtoFuncLog2, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "max"), 2, mathProtoFuncMax, MaxIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "min"), 2, mathProtoFuncMin, MinIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "pow"), 2, mathProtoFuncPow, PowIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "random"), 0, mathProtoFuncRandom, RandomIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "round"), 1, mathProtoFuncRound, RoundIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "sign"), 1, mathProtoFuncSign, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "sin"), 1, mathProtoFuncSin, SinIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "sinh"), 1, mathProtoFuncSinh, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "sqrt"), 1, mathProtoFuncSqrt, SqrtIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "tan"), 1, mathProtoFuncTan, TanIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "tanh"), 1, mathProtoFuncTanh, NoIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "trunc"), 1, mathProtoFuncTrunc, TruncIntrinsic, DontEnum);
	putDirectNativeFunctionWithoutTransition(vm, globalObject, Identifier::fromString(&vm, "imul"), 2, mathProtoFuncIMul, IMulIntrinsic, DontEnum);
	}

	// ------------------------------ Functions --------------------------------

	EncodedJSValue JSC_HOST_CALL mathProtoFuncAbs(ExecState* exec)
	{
	return JSValue::encode(jsNumber(fabs(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncACos(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(acos(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncASin(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(asin(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncATan(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(atan(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncATan2(ExecState* exec)
	{
	double arg0 = exec->argument(0).toNumber(exec);
	double arg1 = exec->argument(1).toNumber(exec);
	return JSValue::encode(jsDoubleNumber(atan2(arg0, arg1)));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncCeil(ExecState* exec)
	{
	return JSValue::encode(jsNumber(ceil(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncClz32(ExecState* exec)
	{
	VM& vm = exec->vm();
	auto scope = DECLARE_THROW_SCOPE(vm);
	uint32_t value = exec->argument(0).toUInt32(exec);
	if (UNLIKELY(scope.exception()))
	return JSValue::encode(jsNull());
	return JSValue::encode(JSValue(clz32(value)));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncCos(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(cos(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncExp(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(exp(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncFloor(ExecState* exec)
	{
	return JSValue::encode(jsNumber(floor(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncHypot(ExecState* exec)
	{
	VM& vm = exec->vm();
	auto scope = DECLARE_THROW_SCOPE(vm);
	unsigned argsCount = exec->argumentCount();
	double max = 0;
	Vector<double, 8> args;
	args.reserveInitialCapacity(argsCount);
	for (unsigned i = 0; i < argsCount; ++i) {
	args.uncheckedAppend(exec->uncheckedArgument(i).toNumber(exec));
	if (UNLIKELY(scope.exception()))
	return JSValue::encode(jsNull());
	if (std::isinf(args[i]))
	return JSValue::encode(jsDoubleNumber(+std::numeric_limits<double>::infinity()));
	max = std::max(fabs(args[i]), max);
	}
	if (!max)
	max = 1;
	// Kahan summation algorithm significantly reduces the numerical error in the total obtained.
	double sum = 0;
	double compensation = 0;
	for (double argument : args) {
	double scaledArgument = argument / max;
	double summand = scaledArgument * scaledArgument - compensation;
	double preliminary = sum + summand;
	compensation = (preliminary - sum) - summand;
	sum = preliminary;
	}
	return JSValue::encode(jsDoubleNumber(sqrt(sum) * max));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncLog(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(log(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncMax(ExecState* exec)
	{
	unsigned argsCount = exec->argumentCount();
	double result = -std::numeric_limits<double>::infinity();
	for (unsigned k = 0; k < argsCount; ++k) {
	double val = exec->uncheckedArgument(k).toNumber(exec);
	if (std::isnan(val)) {
	result = PNaN;
	} else if (val > result \|\| (!val && !result && !std::signbit(val)))
	result = val;
	}
	return JSValue::encode(jsNumber(result));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncMin(ExecState* exec)
	{
	unsigned argsCount = exec->argumentCount();
	double result = +std::numeric_limits<double>::infinity();
	for (unsigned k = 0; k < argsCount; ++k) {
	double val = exec->uncheckedArgument(k).toNumber(exec);
	if (std::isnan(val)) {
	result = PNaN;
	} else if (val < result \|\| (!val && !result && std::signbit(val)))
	result = val;
	}
	return JSValue::encode(jsNumber(result));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncPow(ExecState* exec)
	{
	// ECMA 15.8.2.1.13

	double arg = exec->argument(0).toNumber(exec);
	double arg2 = exec->argument(1).toNumber(exec);

	return JSValue::encode(JSValue(operationMathPow(arg, arg2)));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncRandom(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(exec->lexicalGlobalObject()->weakRandomNumber()));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncRound(ExecState* exec)
	{
	return JSValue::encode(jsNumber(jsRound(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncSign(ExecState* exec)
	{
	double arg = exec->argument(0).toNumber(exec);
	if (std::isnan(arg))
	return JSValue::encode(jsNaN());
	if (!arg)
	return JSValue::encode(std::signbit(arg) ? jsNumber(-0.0) : jsNumber(0));
	return JSValue::encode(jsNumber(std::signbit(arg) ? -1 : 1));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncSin(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(sin(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncSqrt(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(sqrt(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncTan(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(tan(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncIMul(ExecState* exec)
	{
	VM& vm = exec->vm();
	auto scope = DECLARE_THROW_SCOPE(vm);
	int32_t left = exec->argument(0).toInt32(exec);
	if (UNLIKELY(scope.exception()))
	return JSValue::encode(jsNull());
	int32_t right = exec->argument(1).toInt32(exec);
	return JSValue::encode(jsNumber(left * right));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncACosh(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(acosh(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncASinh(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(asinh(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncATanh(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(atanh(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncCbrt(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(cbrt(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncCosh(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(cosh(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncExpm1(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(expm1(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncFround(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(static_cast<float>(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncLog1p(ExecState* exec)
	{
	double value = exec->argument(0).toNumber(exec);
	if (value == 0)
	return JSValue::encode(jsDoubleNumber(value));
	return JSValue::encode(jsDoubleNumber(log1p(value)));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncLog10(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(log10(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncLog2(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(log2(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncSinh(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(sinh(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncTanh(ExecState* exec)
	{
	return JSValue::encode(jsDoubleNumber(tanh(exec->argument(0).toNumber(exec))));
	}

	EncodedJSValue JSC_HOST_CALL mathProtoFuncTrunc(ExecState*exec)
	{
	return JSValue::encode(jsNumber(exec->argument(0).toIntegerPreserveNaN(exec)));
	}

	} // namespace JSC