/*
* 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 "Lookup.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 EncodedJSValue JSC_HOST_CALL mathProtoFuncAbs(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncACos(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncASin(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncATan(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncATan2(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncCeil(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncCos(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncExp(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncFloor(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncLog(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncMax(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncMin(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncPow(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncRandom(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncRound(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncSin(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncSqrt(ExecState*);
static EncodedJSValue JSC_HOST_CALL mathProtoFuncTan(ExecState*);
}
#include "MathObject.lut.h"
namespace JSC {
// ------------------------------ MathObject --------------------------------
const ClassInfo MathObject::s_info = { "Math", &JSObjectWithGlobalObject::s_info, 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, JSGlobalObject* globalObject, Structure* structure)
: JSObjectWithGlobalObject(globalObject, structure)
{
ASSERT(inherits(&s_info));
putDirectWithoutTransition(exec->globalData(), Identifier(exec, "E"), jsNumber(exp(1.0)), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(exec->globalData(), Identifier(exec, "LN2"), jsNumber(log(2.0)), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(exec->globalData(), Identifier(exec, "LN10"), jsNumber(log(10.0)), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(exec->globalData(), Identifier(exec, "LOG2E"), jsNumber(1.0 / log(2.0)), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(exec->globalData(), Identifier(exec, "LOG10E"), jsNumber(0.4342944819032518), DontDelete | DontEnum | ReadOnly); // See ECMA-262 15.8.1.5
putDirectWithoutTransition(exec->globalData(), Identifier(exec, "PI"), jsNumber(piDouble), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(exec->globalData(), Identifier(exec, "SQRT1_2"), jsNumber(sqrt(0.5)), DontDelete | DontEnum | ReadOnly);
putDirectWithoutTransition(exec->globalData(), Identifier(exec, "SQRT2"), jsNumber(sqrt(2.0)), DontDelete | DontEnum | ReadOnly);
}
// ECMA 15.8
bool MathObject::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot &slot)
{
return getStaticFunctionSlot<JSObject>(exec, ExecState::mathTable(exec), this, propertyName, slot);
}
bool MathObject::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
{
return getStaticFunctionDescriptor<JSObject>(exec, ExecState::mathTable(exec), this, propertyName, descriptor);
}
// ------------------------------ 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 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 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 = -Inf;
for (unsigned k = 0; k < argsCount; ++k) {
double val = exec->argument(k).toNumber(exec);
if (isnan(val)) {
result = NaN;
break;
}
if (val > result || (val == 0 && result == 0 && !signbit(val)))
result = val;
}
return JSValue::encode(jsNumber(result));
}
EncodedJSValue JSC_HOST_CALL mathProtoFuncMin(ExecState* exec)
{
unsigned argsCount = exec->argumentCount();
double result = +Inf;
for (unsigned k = 0; k < argsCount; ++k) {
double val = exec->argument(k).toNumber(exec);
if (isnan(val)) {
result = NaN;
break;
}
if (val < result || (val == 0 && result == 0 && 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);
if (isnan(arg2))
return JSValue::encode(jsNaN());
if (isinf(arg2) && fabs(arg) == 1)
return JSValue::encode(jsNaN());
return JSValue::encode(jsNumber(pow(arg, arg2)));
}
EncodedJSValue JSC_HOST_CALL mathProtoFuncRandom(ExecState* exec)
{
return JSValue::encode(jsDoubleNumber(exec->lexicalGlobalObject()->weakRandomNumber()));
}
EncodedJSValue JSC_HOST_CALL mathProtoFuncRound(ExecState* exec)
{
double arg = exec->argument(0).toNumber(exec);
double integer = ceil(arg);
return JSValue::encode(jsNumber(integer - (integer - arg > 0.5)));
}
EncodedJSValue JSC_HOST_CALL mathProtoFuncSin(ExecState* exec)
{
return JSValue::encode(exec->globalData().cachedSin(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))));
}
} // namespace JSC