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/*
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
* Copyright (C) 2007, 2008 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 "ObjectPrototype.h"
#include "Operations.h"
#include <time.h>
#include <wtf/Assertions.h>
#include <wtf/MathExtras.h>
#include <wtf/RandomNumber.h>
#include <wtf/RandomNumberSeed.h>
namespace JSC {
ASSERT_CLASS_FITS_IN_CELL(MathObject);
static JSValue JSC_HOST_CALL mathProtoFuncAbs(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncACos(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncASin(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncATan(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncATan2(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncCeil(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncCos(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncExp(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncFloor(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncLog(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncMax(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncMin(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncPow(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncRandom(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncRound(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncSin(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncSqrt(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL mathProtoFuncTan(ExecState*, JSObject*, JSValue, const ArgList&);
}
#include "MathObject.lut.h"
namespace JSC {
// ------------------------------ MathObject --------------------------------
const ClassInfo MathObject::info = { "Math", 0, 0, ExecState::mathTable };
/* Source for MathObject.lut.h
@begin mathTable
abs mathProtoFuncAbs DontEnum|Function 1
acos mathProtoFuncACos DontEnum|Function 1
asin mathProtoFuncASin DontEnum|Function 1
atan mathProtoFuncATan DontEnum|Function 1
atan2 mathProtoFuncATan2 DontEnum|Function 2
ceil mathProtoFuncCeil DontEnum|Function 1
cos mathProtoFuncCos DontEnum|Function 1
exp mathProtoFuncExp DontEnum|Function 1
floor mathProtoFuncFloor DontEnum|Function 1
log mathProtoFuncLog DontEnum|Function 1
max mathProtoFuncMax DontEnum|Function 2
min mathProtoFuncMin DontEnum|Function 2
pow mathProtoFuncPow DontEnum|Function 2
random mathProtoFuncRandom DontEnum|Function 0
round mathProtoFuncRound DontEnum|Function 1
sin mathProtoFuncSin DontEnum|Function 1
sqrt mathProtoFuncSqrt DontEnum|Function 1
tan mathProtoFuncTan DontEnum|Function 1
@end
*/
MathObject::MathObject(ExecState* exec, PassRefPtr<Structure> structure)
: JSObject(structure)
{
putDirectWithoutTransition(Identifier(exec, "E"), jsNumber(exec, exp(1.0)), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(Identifier(exec, "LN2"), jsNumber(exec, log(2.0)), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(Identifier(exec, "LN10"), jsNumber(exec, log(10.0)), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(Identifier(exec, "LOG2E"), jsNumber(exec, 1.0 / log(2.0)), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(Identifier(exec, "LOG10E"), jsNumber(exec, 1.0 / log(10.0)), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(Identifier(exec, "PI"), jsNumber(exec, piDouble), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(Identifier(exec, "SQRT1_2"), jsNumber(exec, sqrt(0.5)), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(Identifier(exec, "SQRT2"), jsNumber(exec, sqrt(2.0)), DontDelete | DontEnum | ReadOnly);
WTF::initializeWeakRandomNumberGenerator();
}
// ECMA 15.8
bool MathObject::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot &slot)
{
const HashEntry* entry = ExecState::mathTable(exec)->entry(exec, propertyName);
if (!entry)
return JSObject::getOwnPropertySlot(exec, propertyName, slot);
ASSERT(entry->attributes() & Function);
setUpStaticFunctionSlot(exec, entry, this, propertyName, slot);
return true;
}
// ------------------------------ Functions --------------------------------
JSValue JSC_HOST_CALL mathProtoFuncAbs(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
return jsNumber(exec, fabs(args.at(0).toNumber(exec)));
}
JSValue JSC_HOST_CALL mathProtoFuncACos(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
return jsNumber(exec, acos(args.at(0).toNumber(exec)));
}
JSValue JSC_HOST_CALL mathProtoFuncASin(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
return jsNumber(exec, asin(args.at(0).toNumber(exec)));
}
JSValue JSC_HOST_CALL mathProtoFuncATan(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
return jsNumber(exec, atan(args.at(0).toNumber(exec)));
}
JSValue JSC_HOST_CALL mathProtoFuncATan2(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
return jsNumber(exec, atan2(args.at(0).toNumber(exec), args.at(1).toNumber(exec)));
}
JSValue JSC_HOST_CALL mathProtoFuncCeil(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
return jsNumber(exec, ceil(args.at(0).toNumber(exec)));
}
JSValue JSC_HOST_CALL mathProtoFuncCos(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
return jsNumber(exec, cos(args.at(0).toNumber(exec)));
}
JSValue JSC_HOST_CALL mathProtoFuncExp(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
return jsNumber(exec, exp(args.at(0).toNumber(exec)));
}
JSValue JSC_HOST_CALL mathProtoFuncFloor(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
return jsNumber(exec, floor(args.at(0).toNumber(exec)));
}
JSValue JSC_HOST_CALL mathProtoFuncLog(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
return jsNumber(exec, log(args.at(0).toNumber(exec)));
}
JSValue JSC_HOST_CALL mathProtoFuncMax(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
unsigned argsCount = args.size();
double result = -Inf;
for (unsigned k = 0; k < argsCount; ++k) {
double val = args.at(k).toNumber(exec);
if (isnan(val)) {
result = NaN;
break;
}
if (val > result || (val == 0 && result == 0 && !signbit(val)))
result = val;
}
return jsNumber(exec, result);
}
JSValue JSC_HOST_CALL mathProtoFuncMin(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
unsigned argsCount = args.size();
double result = +Inf;
for (unsigned k = 0; k < argsCount; ++k) {
double val = args.at(k).toNumber(exec);
if (isnan(val)) {
result = NaN;
break;
}
if (val < result || (val == 0 && result == 0 && signbit(val)))
result = val;
}
return jsNumber(exec, result);
}
JSValue JSC_HOST_CALL mathProtoFuncPow(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
// ECMA 15.8.2.1.13
double arg = args.at(0).toNumber(exec);
double arg2 = args.at(1).toNumber(exec);
if (isnan(arg2))
return jsNaN(exec);
if (isinf(arg2) && fabs(arg) == 1)
return jsNaN(exec);
return jsNumber(exec, pow(arg, arg2));
}
JSValue JSC_HOST_CALL mathProtoFuncRandom(ExecState* exec, JSObject*, JSValue, const ArgList&)
{
return jsNumber(exec, WTF::weakRandomNumber());
}
JSValue JSC_HOST_CALL mathProtoFuncRound(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
double arg = args.at(0).toNumber(exec);
if (signbit(arg) && arg >= -0.5)
return jsNumber(exec, -0.0);
return jsNumber(exec, floor(arg + 0.5));
}
JSValue JSC_HOST_CALL mathProtoFuncSin(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
return jsNumber(exec, sin(args.at(0).toNumber(exec)));
}
JSValue JSC_HOST_CALL mathProtoFuncSqrt(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
return jsNumber(exec, sqrt(args.at(0).toNumber(exec)));
}
JSValue JSC_HOST_CALL mathProtoFuncTan(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
return jsNumber(exec, tan(args.at(0).toNumber(exec)));
}
} // namespace JSC
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