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Diffstat (limited to 'src/script/qscriptecmamath.cpp')
| -rw-r--r-- | src/script/qscriptecmamath.cpp | 391 |
1 files changed, 0 insertions, 391 deletions
diff --git a/src/script/qscriptecmamath.cpp b/src/script/qscriptecmamath.cpp deleted file mode 100644 index 67304f0..0000000 --- a/src/script/qscriptecmamath.cpp +++ /dev/null @@ -1,391 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtScript module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the Technology Preview License Agreement accompanying -** this package. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** If you have questions regarding the use of this file, please contact -** Nokia at qt-info@nokia.com. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qscriptecmamath_p.h" - -#ifndef QT_NO_SCRIPT - -#include "qscriptengine_p.h" -#include "qscriptvalueimpl_p.h" -#include "qscriptcontext_p.h" -#include "qscriptmember_p.h" -#include "qscriptobject_p.h" - -#include <QtCore/QtDebug> -#include <QtCore/qnumeric.h> -#include <QtCore/QSysInfo> -#include <math.h> - -QT_BEGIN_NAMESPACE - -namespace QScript { namespace Ecma { - -static const qsreal qt_PI = 2.0 * ::asin(1.0); - -Math::Math(QScriptEnginePrivate *engine, QScriptClassInfo *classInfo): - m_engine(engine), - m_classInfo(classInfo) -{ -} - -Math::~Math() -{ -} - -void Math::construct(QScriptValueImpl *object, QScriptEnginePrivate *eng) -{ - QScriptClassInfo *classInfo = eng->registerClass(QLatin1String("Math")); - - Math *instance = new Math(eng, classInfo); - eng->newObject(object, classInfo); - object->setObjectData(instance); - - QScriptValue::PropertyFlags flags = QScriptValue::Undeletable - | QScriptValue::ReadOnly - | QScriptValue::SkipInEnumeration; - - object->setProperty(QLatin1String("E"), - QScriptValueImpl(::exp(1.0)), flags); - object->setProperty(QLatin1String("LN2"), - QScriptValueImpl(::log(2.0)), flags); - object->setProperty(QLatin1String("LN10"), - QScriptValueImpl(::log(10.0)), flags); - object->setProperty(QLatin1String("LOG2E"), - QScriptValueImpl(1.0/::log(2.0)), flags); - object->setProperty(QLatin1String("LOG10E"), - QScriptValueImpl(1.0/::log(10.0)), flags); - object->setProperty(QLatin1String("PI"), - QScriptValueImpl(qt_PI), flags); - object->setProperty(QLatin1String("SQRT1_2"), - QScriptValueImpl(::sqrt(0.5)), flags); - object->setProperty(QLatin1String("SQRT2"), - QScriptValueImpl(::sqrt(2.0)), flags); - - flags = QScriptValue::SkipInEnumeration; - addFunction(*object, QLatin1String("abs"), method_abs, 1, flags); - addFunction(*object, QLatin1String("acos"), method_acos, 1, flags); - addFunction(*object, QLatin1String("asin"), method_asin, 0, flags); - addFunction(*object, QLatin1String("atan"), method_atan, 1, flags); - addFunction(*object, QLatin1String("atan2"), method_atan2, 2, flags); - addFunction(*object, QLatin1String("ceil"), method_ceil, 1, flags); - addFunction(*object, QLatin1String("cos"), method_cos, 1, flags); - addFunction(*object, QLatin1String("exp"), method_exp, 1, flags); - addFunction(*object, QLatin1String("floor"), method_floor, 1, flags); - addFunction(*object, QLatin1String("log"), method_log, 1, flags); - addFunction(*object, QLatin1String("max"), method_max, 2, flags); - addFunction(*object, QLatin1String("min"), method_min, 2, flags); - addFunction(*object, QLatin1String("pow"), method_pow, 2, flags); - addFunction(*object, QLatin1String("random"), method_random, 0, flags); - addFunction(*object, QLatin1String("round"), method_round, 1, flags); - addFunction(*object, QLatin1String("sin"), method_sin, 1, flags); - addFunction(*object, QLatin1String("sqrt"), method_sqrt, 1, flags); - addFunction(*object, QLatin1String("tan"), method_tan, 1, flags); -} - -/* copies the sign from y to x and returns the result */ -static qsreal copySign(qsreal x, qsreal y) -{ - uchar *xch = (uchar *)&x; - uchar *ych = (uchar *)&y; - if (QSysInfo::ByteOrder == QSysInfo::BigEndian) - xch[0] = (xch[0] & 0x7f) | (ych[0] & 0x80); - else - xch[7] = (xch[7] & 0x7f) | (ych[7] & 0x80); - return x; -} - -QScriptValueImpl Math::method_abs(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal v = context->argument(0).toNumber(); - if (v == 0) // 0 | -0 - return (QScriptValueImpl(0)); - else - return (QScriptValueImpl(v < 0 ? -v : v)); -} - -QScriptValueImpl Math::method_acos(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal v = context->argument(0).toNumber(); - if (v > 1) - return QScriptValueImpl(qSNaN()); - return (QScriptValueImpl(::acos(v))); -} - -QScriptValueImpl Math::method_asin(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal v = context->argument(0).toNumber(); - if (v > 1) - return QScriptValueImpl(qSNaN()); - return (QScriptValueImpl(::asin(v))); -} - -QScriptValueImpl Math::method_atan(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal v = context->argument(0).toNumber(); - if (v == 0.0) - return QScriptValueImpl(v); - return (QScriptValueImpl(::atan(v))); -} - -QScriptValueImpl Math::method_atan2(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal v1 = context->argument(0).toNumber(); - qsreal v2 = context->argument(1).toNumber(); -#ifdef Q_OS_WINCE - if (v1 == 0.0) { - const bool v1MinusZero = _copysign(1.0, v1) < 0.0; - const bool v2MinusZero = (v2 == 0 && _copysign(1.0, v2) < 0.0); - if ((v1MinusZero && v2MinusZero) || (v1MinusZero && v2 == -1.0)) - return QScriptValueImpl(-qt_PI); - if (v2MinusZero) - return QScriptValueImpl(qt_PI); - if (v1MinusZero && v2 == 1.0) - return QScriptValueImpl(-0.0); -#if defined(_X86_) - if (v2 == 0.0 && (v1MinusZero || (!v1MinusZero && !v2MinusZero))) - return QScriptValueImpl(0.0); -#endif - } -#endif -#if defined(Q_OS_WINCE) && defined(_X86_) - if (v1 == -1.0 && !_finite(v2) && _copysign(1.0, v2) > 0.0) - return QScriptValueImpl(-0.0); -#endif - if ((v1 < 0) && qIsFinite(v1) && qIsInf(v2) && (copySign(1.0, v2) == 1.0)) - return QScriptValueImpl(copySign(0, -1.0)); - if ((v1 == 0.0) && (v2 == 0.0)) { - if ((copySign(1.0, v1) == 1.0) && (copySign(1.0, v2) == -1.0)) - return QScriptValueImpl(qt_PI); - else if ((copySign(1.0, v1) == -1.0) && (copySign(1.0, v2) == -1.0)) - return QScriptValueImpl(-qt_PI); - } - return (QScriptValueImpl(::atan2(v1, v2))); -} - -QScriptValueImpl Math::method_ceil(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal v = context->argument(0).toNumber(); - if (v < 0.0 && v > -1.0) - return QScriptValueImpl(copySign(0, -1.0)); - return (QScriptValueImpl(::ceil(v))); -} - -QScriptValueImpl Math::method_cos(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal v = context->argument(0).toNumber(); - return (QScriptValueImpl(::cos(v))); -} - -QScriptValueImpl Math::method_exp(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal v = context->argument(0).toNumber(); - if (qIsInf(v)) { - if (copySign(1.0, v) == -1.0) - return QScriptValueImpl(0); - else - return QScriptValueImpl(qInf()); - } - return (QScriptValueImpl(::exp(v))); -} - -QScriptValueImpl Math::method_floor(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal v = context->argument(0).toNumber(); - return (QScriptValueImpl(::floor(v))); -} - -QScriptValueImpl Math::method_log(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal v = context->argument(0).toNumber(); - if (v < 0) - return QScriptValueImpl(qSNaN()); - return (QScriptValueImpl(::log(v))); -} - -QScriptValueImpl Math::method_max(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal mx = -qInf(); - for (int i = 0; i < context->argumentCount(); ++i) { - qsreal x = context->argument(i).toNumber(); - if (x > mx || qIsNaN(x)) - mx = x; - } - return (QScriptValueImpl(mx)); -} - -QScriptValueImpl Math::method_min(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal mx = qInf(); - for (int i = 0; i < context->argumentCount(); ++i) { - qsreal x = context->argument(i).toNumber(); - if ((x == 0 && mx == x && copySign(1.0, x) == -1.0) - || (x < mx) || qIsNaN(x)) { - mx = x; - } - } - return (QScriptValueImpl(mx)); -} - -QScriptValueImpl Math::method_pow(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal x = context->argument(0).toNumber(); - qsreal y = context->argument(1).toNumber(); - if (qIsNaN(y)) - return QScriptValueImpl(qSNaN()); - if (y == 0) - return QScriptValueImpl(1); - if (((x == 1) || (x == -1)) && qIsInf(y)) - return QScriptValueImpl(qSNaN()); - if (((x == 0) && copySign(1.0, x) == 1.0) && (y < 0)) - return QScriptValueImpl(qInf()); - if ((x == 0) && copySign(1.0, x) == -1.0) { - if (y < 0) { - if (::fmod(-y, 2.0) == 1.0) - return QScriptValueImpl(-qInf()); - else - return QScriptValueImpl(qInf()); - } else if (y > 0) { - if (::fmod(y, 2.0) == 1.0) - return QScriptValueImpl(copySign(0, -1.0)); - else - return QScriptValueImpl(0); - } - } -#ifdef Q_OS_AIX - if (qIsInf(x) && copySign(1.0, x) == -1.0) { - if (y > 0) { - if (::fmod(y, 2.0) == 1.0) - return QScriptValueImpl(-qInf()); - else - return QScriptValueImpl(qInf()); - } else if (y < 0) { - if (::fmod(-y, 2.0) == 1.0) - return QScriptValueImpl(copySign(0, -1.0)); - else - return QScriptValueImpl(0); - } - } -#endif - return (QScriptValueImpl(::pow(x, y))); -} - -QScriptValueImpl Math::method_random(QScriptContextPrivate *, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - return (QScriptValueImpl(qrand() / (qsreal) RAND_MAX)); -} - -QScriptValueImpl Math::method_round(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal v = context->argument(0).toNumber(); - v = copySign(::floor(v + 0.5), v); - return (QScriptValueImpl(v)); -} - -QScriptValueImpl Math::method_sin(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal v = context->argument(0).toNumber(); - return (QScriptValueImpl(::sin(v))); -} - -QScriptValueImpl Math::method_sqrt(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal v = context->argument(0).toNumber(); - return (QScriptValueImpl(::sqrt(v))); -} - -QScriptValueImpl Math::method_tan(QScriptContextPrivate *context, - QScriptEnginePrivate *, - QScriptClassInfo *) -{ - qsreal v = context->argument(0).toNumber(); - if (v == 0.0) - return QScriptValueImpl(v); - return (QScriptValueImpl(::tan(v))); -} - -void Math::addFunction(QScriptValueImpl &object, const QString &name, - QScriptInternalFunctionSignature fun, int length, - const QScriptValue::PropertyFlags flags) -{ - QScriptEnginePrivate *eng_p = object.engine(); - QScriptValueImpl val = eng_p->createFunction(fun, length, object.classInfo(), name); - object.setProperty(name, val, flags); -} - -} } // namespace QScript::Ecma - -QT_END_NAMESPACE - -#endif // QT_NO_SCRIPT |