From: Lars Knoll <lars.knoll@digia.com>
Date: Mon, 21 Jan 2013 20:48:51 +0000 (+0100)
Subject: Move math object into it's own file
X-Git-Tag: upstream/5.2.1~669^2~659^2~447
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fc0ce315b38dfb752cf920c4429ce74a54876cb4;p=platform%2Fupstream%2Fqtdeclarative.git

Move math object into it's own file

Change-Id: I01f00659f01ff11a401dedf1ce27b16d31d0f4f9
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
---

diff --git a/qmljs_engine.cpp b/qmljs_engine.cpp
index 2ad3b97..9dc0eb3 100644
--- a/qmljs_engine.cpp
+++ b/qmljs_engine.cpp
@@ -44,6 +44,7 @@
 #include <qv4globalobject.h>
 #include <qv4errorobject.h>
 #include <qv4functionobject.h>
+#include <qv4mathobject.h>
 #include <qv4regexpobject.h>
 #include <qmljs_runtime.h>
 #include "qv4mm.h"
diff --git a/qv4ecmaobjects.cpp b/qv4ecmaobjects.cpp
index d92ada9..206d349 100644
--- a/qv4ecmaobjects.cpp
+++ b/qv4ecmaobjects.cpp
@@ -47,9 +47,6 @@
 #include <QtCore/QDateTime>
 #include <QtCore/QStringList>
 #include <QtCore/QDebug>
-#include <cmath>
-#include <qmath.h>
-#include <qnumeric.h>
 #include <cassert>
 
 #include <private/qqmljsengine_p.h>
@@ -73,7 +70,6 @@
 
 using namespace QQmlJS::VM;
 
-static const double qt_PI = 2.0 * ::asin(1.0);
 
 //
 // Object
@@ -1465,252 +1461,3 @@ Value ArrayPrototype::method_reduceRight(ExecutionContext *ctx)
     return acc;
 }
 
-//
-// Math object
-//
-MathObject::MathObject(ExecutionContext *ctx)
-{
-    defineReadonlyProperty(ctx->engine, QStringLiteral("E"), Value::fromDouble(::exp(1.0)));
-    defineReadonlyProperty(ctx->engine, QStringLiteral("LN2"), Value::fromDouble(::log(2.0)));
-    defineReadonlyProperty(ctx->engine, QStringLiteral("LN10"), Value::fromDouble(::log(10.0)));
-    defineReadonlyProperty(ctx->engine, QStringLiteral("LOG2E"), Value::fromDouble(1.0/::log(2.0)));
-    defineReadonlyProperty(ctx->engine, QStringLiteral("LOG10E"), Value::fromDouble(1.0/::log(10.0)));
-    defineReadonlyProperty(ctx->engine, QStringLiteral("PI"), Value::fromDouble(qt_PI));
-    defineReadonlyProperty(ctx->engine, QStringLiteral("SQRT1_2"), Value::fromDouble(::sqrt(0.5)));
-    defineReadonlyProperty(ctx->engine, QStringLiteral("SQRT2"), Value::fromDouble(::sqrt(2.0)));
-
-    defineDefaultProperty(ctx, QStringLiteral("abs"), method_abs, 1);
-    defineDefaultProperty(ctx, QStringLiteral("acos"), method_acos, 1);
-    defineDefaultProperty(ctx, QStringLiteral("asin"), method_asin, 0);
-    defineDefaultProperty(ctx, QStringLiteral("atan"), method_atan, 1);
-    defineDefaultProperty(ctx, QStringLiteral("atan2"), method_atan2, 2);
-    defineDefaultProperty(ctx, QStringLiteral("ceil"), method_ceil, 1);
-    defineDefaultProperty(ctx, QStringLiteral("cos"), method_cos, 1);
-    defineDefaultProperty(ctx, QStringLiteral("exp"), method_exp, 1);
-    defineDefaultProperty(ctx, QStringLiteral("floor"), method_floor, 1);
-    defineDefaultProperty(ctx, QStringLiteral("log"), method_log, 1);
-    defineDefaultProperty(ctx, QStringLiteral("max"), method_max, 2);
-    defineDefaultProperty(ctx, QStringLiteral("min"), method_min, 2);
-    defineDefaultProperty(ctx, QStringLiteral("pow"), method_pow, 2);
-    defineDefaultProperty(ctx, QStringLiteral("random"), method_random, 0);
-    defineDefaultProperty(ctx, QStringLiteral("round"), method_round, 1);
-    defineDefaultProperty(ctx, QStringLiteral("sin"), method_sin, 1);
-    defineDefaultProperty(ctx, QStringLiteral("sqrt"), method_sqrt, 1);
-    defineDefaultProperty(ctx, QStringLiteral("tan"), method_tan, 1);
-}
-
-/* copies the sign from y to x and returns the result */
-static double copySign(double x, double 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;
-}
-
-Value MathObject::method_abs(ExecutionContext *ctx)
-{
-    double v = ctx->argument(0).toNumber(ctx);
-    if (v == 0) // 0 | -0
-        return Value::fromDouble(0);
-
-    return Value::fromDouble(v < 0 ? -v : v);
-}
-
-Value MathObject::method_acos(ExecutionContext *ctx)
-{
-    double v = ctx->argument(0).toNumber(ctx);
-    if (v > 1)
-        return Value::fromDouble(qSNaN());
-
-    return Value::fromDouble(::acos(v));
-}
-
-Value MathObject::method_asin(ExecutionContext *ctx)
-{
-    double v = ctx->argument(0).toNumber(ctx);
-    if (v > 1)
-        return Value::fromDouble(qSNaN());
-    else
-        return Value::fromDouble(::asin(v));
-}
-
-Value MathObject::method_atan(ExecutionContext *ctx)
-{
-    double v = ctx->argument(0).toNumber(ctx);
-    if (v == 0.0)
-        return Value::fromDouble(v);
-    else
-        return Value::fromDouble(::atan(v));
-}
-
-Value MathObject::method_atan2(ExecutionContext *ctx)
-{
-    double v1 = ctx->argument(0).toNumber(ctx);
-    double v2 = ctx->argument(1).toNumber(ctx);
-    if ((v1 < 0) && qIsFinite(v1) && qIsInf(v2) && (copySign(1.0, v2) == 1.0)) {
-        return Value::fromDouble(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 Value::fromDouble(qt_PI);
-        } else if ((copySign(1.0, v1) == -1.0) && (copySign(1.0, v2) == -1.0)) {
-            return Value::fromDouble(-qt_PI);
-        }
-    }
-    return Value::fromDouble(::atan2(v1, v2));
-}
-
-Value MathObject::method_ceil(ExecutionContext *ctx)
-{
-    double v = ctx->argument(0).toNumber(ctx);
-    if (v < 0.0 && v > -1.0)
-        return Value::fromDouble(copySign(0, -1.0));
-    else
-        return Value::fromDouble(::ceil(v));
-}
-
-Value MathObject::method_cos(ExecutionContext *ctx)
-{
-    double v = ctx->argument(0).toNumber(ctx);
-    return Value::fromDouble(::cos(v));
-}
-
-Value MathObject::method_exp(ExecutionContext *ctx)
-{
-    double v = ctx->argument(0).toNumber(ctx);
-    if (qIsInf(v)) {
-        if (copySign(1.0, v) == -1.0)
-            return Value::fromDouble(0);
-        else
-            return Value::fromDouble(qInf());
-    } else {
-        return Value::fromDouble(::exp(v));
-    }
-}
-
-Value MathObject::method_floor(ExecutionContext *ctx)
-{
-    double v = ctx->argument(0).toNumber(ctx);
-    return Value::fromDouble(::floor(v));
-}
-
-Value MathObject::method_log(ExecutionContext *ctx)
-{
-    double v = ctx->argument(0).toNumber(ctx);
-    if (v < 0)
-        return Value::fromDouble(qSNaN());
-    else
-        return Value::fromDouble(::log(v));
-}
-
-Value MathObject::method_max(ExecutionContext *ctx)
-{
-    double mx = -qInf();
-    for (unsigned i = 0; i < ctx->argumentCount; ++i) {
-        double x = ctx->argument(i).toNumber(ctx);
-        if (x > mx || std::isnan(x))
-            mx = x;
-    }
-    return Value::fromDouble(mx);
-}
-
-Value MathObject::method_min(ExecutionContext *ctx)
-{
-    double mx = qInf();
-    for (unsigned i = 0; i < ctx->argumentCount; ++i) {
-        double x = ctx->argument(i).toNumber(ctx);
-        if ((x == 0 && mx == x && copySign(1.0, x) == -1.0)
-                || (x < mx) || std::isnan(x)) {
-            mx = x;
-        }
-    }
-    return Value::fromDouble(mx);
-}
-
-Value MathObject::method_pow(ExecutionContext *ctx)
-{
-    double x = ctx->argument(0).toNumber(ctx);
-    double y = ctx->argument(1).toNumber(ctx);
-
-    if (std::isnan(y))
-        return Value::fromDouble(qSNaN());
-
-    if (y == 0) {
-        return Value::fromDouble(1);
-    } else if (((x == 1) || (x == -1)) && std::isinf(y)) {
-        return Value::fromDouble(qSNaN());
-    } else if (((x == 0) && copySign(1.0, x) == 1.0) && (y < 0)) {
-        return Value::fromDouble(qInf());
-    } else if ((x == 0) && copySign(1.0, x) == -1.0) {
-        if (y < 0) {
-            if (::fmod(-y, 2.0) == 1.0)
-                return Value::fromDouble(-qInf());
-            else
-                return Value::fromDouble(qInf());
-        } else if (y > 0) {
-            if (::fmod(y, 2.0) == 1.0)
-                return Value::fromDouble(copySign(0, -1.0));
-            else
-                return Value::fromDouble(0);
-        }
-    }
-
-#ifdef Q_OS_AIX
-    else if (qIsInf(x) && copySign(1.0, x) == -1.0) {
-        if (y > 0) {
-            if (::fmod(y, 2.0) == 1.0)
-                return Value::number(ctx, -qInf());
-            else
-                return Value::number(ctx, qInf());
-        } else if (y < 0) {
-            if (::fmod(-y, 2.0) == 1.0)
-                return Value::number(ctx, copySign(0, -1.0));
-            else
-                return Value::number(ctx, 0);
-        }
-    }
-#endif
-    else {
-        return Value::fromDouble(::pow(x, y));
-    }
-    // ###
-    return Value::fromDouble(qSNaN());
-}
-
-Value MathObject::method_random(ExecutionContext */*ctx*/)
-{
-    return Value::fromDouble(qrand() / (double) RAND_MAX);
-}
-
-Value MathObject::method_round(ExecutionContext *ctx)
-{
-    double v = ctx->argument(0).toNumber(ctx);
-    v = copySign(::floor(v + 0.5), v);
-    return Value::fromDouble(v);
-}
-
-Value MathObject::method_sin(ExecutionContext *ctx)
-{
-    double v = ctx->argument(0).toNumber(ctx);
-    return Value::fromDouble(::sin(v));
-}
-
-Value MathObject::method_sqrt(ExecutionContext *ctx)
-{
-    double v = ctx->argument(0).toNumber(ctx);
-    return Value::fromDouble(::sqrt(v));
-}
-
-Value MathObject::method_tan(ExecutionContext *ctx)
-{
-    double v = ctx->argument(0).toNumber(ctx);
-    if (v == 0.0)
-        return Value::fromDouble(v);
-    else
-        return Value::fromDouble(::tan(v));
-}
-
diff --git a/qv4ecmaobjects_p.h b/qv4ecmaobjects_p.h
index dc4fcd5..d17bfc4 100644
--- a/qv4ecmaobjects_p.h
+++ b/qv4ecmaobjects_p.h
@@ -165,29 +165,6 @@ struct ArrayPrototype: ArrayObject
     static Value method_reduceRight(ExecutionContext *ctx);
 };
 
-struct MathObject: Object
-{
-    MathObject(ExecutionContext *ctx);
-
-    static Value method_abs(ExecutionContext *ctx);
-    static Value method_acos(ExecutionContext *ctx);
-    static Value method_asin(ExecutionContext *ctx);
-    static Value method_atan(ExecutionContext *ctx);
-    static Value method_atan2(ExecutionContext *ctx);
-    static Value method_ceil(ExecutionContext *ctx);
-    static Value method_cos(ExecutionContext *ctx);
-    static Value method_exp(ExecutionContext *ctx);
-    static Value method_floor(ExecutionContext *ctx);
-    static Value method_log(ExecutionContext *ctx);
-    static Value method_max(ExecutionContext *ctx);
-    static Value method_min(ExecutionContext *ctx);
-    static Value method_pow(ExecutionContext *ctx);
-    static Value method_random(ExecutionContext *ctx);
-    static Value method_round(ExecutionContext *ctx);
-    static Value method_sin(ExecutionContext *ctx);
-    static Value method_sqrt(ExecutionContext *ctx);
-    static Value method_tan(ExecutionContext *ctx);
-};
 
 } // end of namespace VM
 } // end of namespace QQmlJS
diff --git a/qv4mathobject.cpp b/qv4mathobject.cpp
new file mode 100644
index 0000000..2eefb51
--- /dev/null
+++ b/qv4mathobject.cpp
@@ -0,0 +1,297 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the V4VM module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qv4mathobject.h"
+
+#include <cmath>
+#include <qmath.h>
+#include <qnumeric.h>
+
+using namespace QQmlJS::VM;
+
+static const double qt_PI = 2.0 * ::asin(1.0);
+
+MathObject::MathObject(ExecutionContext *ctx)
+{
+    defineReadonlyProperty(ctx->engine, QStringLiteral("E"), Value::fromDouble(::exp(1.0)));
+    defineReadonlyProperty(ctx->engine, QStringLiteral("LN2"), Value::fromDouble(::log(2.0)));
+    defineReadonlyProperty(ctx->engine, QStringLiteral("LN10"), Value::fromDouble(::log(10.0)));
+    defineReadonlyProperty(ctx->engine, QStringLiteral("LOG2E"), Value::fromDouble(1.0/::log(2.0)));
+    defineReadonlyProperty(ctx->engine, QStringLiteral("LOG10E"), Value::fromDouble(1.0/::log(10.0)));
+    defineReadonlyProperty(ctx->engine, QStringLiteral("PI"), Value::fromDouble(qt_PI));
+    defineReadonlyProperty(ctx->engine, QStringLiteral("SQRT1_2"), Value::fromDouble(::sqrt(0.5)));
+    defineReadonlyProperty(ctx->engine, QStringLiteral("SQRT2"), Value::fromDouble(::sqrt(2.0)));
+
+    defineDefaultProperty(ctx, QStringLiteral("abs"), method_abs, 1);
+    defineDefaultProperty(ctx, QStringLiteral("acos"), method_acos, 1);
+    defineDefaultProperty(ctx, QStringLiteral("asin"), method_asin, 0);
+    defineDefaultProperty(ctx, QStringLiteral("atan"), method_atan, 1);
+    defineDefaultProperty(ctx, QStringLiteral("atan2"), method_atan2, 2);
+    defineDefaultProperty(ctx, QStringLiteral("ceil"), method_ceil, 1);
+    defineDefaultProperty(ctx, QStringLiteral("cos"), method_cos, 1);
+    defineDefaultProperty(ctx, QStringLiteral("exp"), method_exp, 1);
+    defineDefaultProperty(ctx, QStringLiteral("floor"), method_floor, 1);
+    defineDefaultProperty(ctx, QStringLiteral("log"), method_log, 1);
+    defineDefaultProperty(ctx, QStringLiteral("max"), method_max, 2);
+    defineDefaultProperty(ctx, QStringLiteral("min"), method_min, 2);
+    defineDefaultProperty(ctx, QStringLiteral("pow"), method_pow, 2);
+    defineDefaultProperty(ctx, QStringLiteral("random"), method_random, 0);
+    defineDefaultProperty(ctx, QStringLiteral("round"), method_round, 1);
+    defineDefaultProperty(ctx, QStringLiteral("sin"), method_sin, 1);
+    defineDefaultProperty(ctx, QStringLiteral("sqrt"), method_sqrt, 1);
+    defineDefaultProperty(ctx, QStringLiteral("tan"), method_tan, 1);
+}
+
+/* copies the sign from y to x and returns the result */
+static double copySign(double x, double 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;
+}
+
+Value MathObject::method_abs(ExecutionContext *ctx)
+{
+    double v = ctx->argument(0).toNumber(ctx);
+    if (v == 0) // 0 | -0
+        return Value::fromDouble(0);
+
+    return Value::fromDouble(v < 0 ? -v : v);
+}
+
+Value MathObject::method_acos(ExecutionContext *ctx)
+{
+    double v = ctx->argument(0).toNumber(ctx);
+    if (v > 1)
+        return Value::fromDouble(qSNaN());
+
+    return Value::fromDouble(::acos(v));
+}
+
+Value MathObject::method_asin(ExecutionContext *ctx)
+{
+    double v = ctx->argument(0).toNumber(ctx);
+    if (v > 1)
+        return Value::fromDouble(qSNaN());
+    else
+        return Value::fromDouble(::asin(v));
+}
+
+Value MathObject::method_atan(ExecutionContext *ctx)
+{
+    double v = ctx->argument(0).toNumber(ctx);
+    if (v == 0.0)
+        return Value::fromDouble(v);
+    else
+        return Value::fromDouble(::atan(v));
+}
+
+Value MathObject::method_atan2(ExecutionContext *ctx)
+{
+    double v1 = ctx->argument(0).toNumber(ctx);
+    double v2 = ctx->argument(1).toNumber(ctx);
+    if ((v1 < 0) && qIsFinite(v1) && qIsInf(v2) && (copySign(1.0, v2) == 1.0)) {
+        return Value::fromDouble(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 Value::fromDouble(qt_PI);
+        } else if ((copySign(1.0, v1) == -1.0) && (copySign(1.0, v2) == -1.0)) {
+            return Value::fromDouble(-qt_PI);
+        }
+    }
+    return Value::fromDouble(::atan2(v1, v2));
+}
+
+Value MathObject::method_ceil(ExecutionContext *ctx)
+{
+    double v = ctx->argument(0).toNumber(ctx);
+    if (v < 0.0 && v > -1.0)
+        return Value::fromDouble(copySign(0, -1.0));
+    else
+        return Value::fromDouble(::ceil(v));
+}
+
+Value MathObject::method_cos(ExecutionContext *ctx)
+{
+    double v = ctx->argument(0).toNumber(ctx);
+    return Value::fromDouble(::cos(v));
+}
+
+Value MathObject::method_exp(ExecutionContext *ctx)
+{
+    double v = ctx->argument(0).toNumber(ctx);
+    if (qIsInf(v)) {
+        if (copySign(1.0, v) == -1.0)
+            return Value::fromDouble(0);
+        else
+            return Value::fromDouble(qInf());
+    } else {
+        return Value::fromDouble(::exp(v));
+    }
+}
+
+Value MathObject::method_floor(ExecutionContext *ctx)
+{
+    double v = ctx->argument(0).toNumber(ctx);
+    return Value::fromDouble(::floor(v));
+}
+
+Value MathObject::method_log(ExecutionContext *ctx)
+{
+    double v = ctx->argument(0).toNumber(ctx);
+    if (v < 0)
+        return Value::fromDouble(qSNaN());
+    else
+        return Value::fromDouble(::log(v));
+}
+
+Value MathObject::method_max(ExecutionContext *ctx)
+{
+    double mx = -qInf();
+    for (unsigned i = 0; i < ctx->argumentCount; ++i) {
+        double x = ctx->argument(i).toNumber(ctx);
+        if (x > mx || std::isnan(x))
+            mx = x;
+    }
+    return Value::fromDouble(mx);
+}
+
+Value MathObject::method_min(ExecutionContext *ctx)
+{
+    double mx = qInf();
+    for (unsigned i = 0; i < ctx->argumentCount; ++i) {
+        double x = ctx->argument(i).toNumber(ctx);
+        if ((x == 0 && mx == x && copySign(1.0, x) == -1.0)
+                || (x < mx) || std::isnan(x)) {
+            mx = x;
+        }
+    }
+    return Value::fromDouble(mx);
+}
+
+Value MathObject::method_pow(ExecutionContext *ctx)
+{
+    double x = ctx->argument(0).toNumber(ctx);
+    double y = ctx->argument(1).toNumber(ctx);
+
+    if (std::isnan(y))
+        return Value::fromDouble(qSNaN());
+
+    if (y == 0) {
+        return Value::fromDouble(1);
+    } else if (((x == 1) || (x == -1)) && std::isinf(y)) {
+        return Value::fromDouble(qSNaN());
+    } else if (((x == 0) && copySign(1.0, x) == 1.0) && (y < 0)) {
+        return Value::fromDouble(qInf());
+    } else if ((x == 0) && copySign(1.0, x) == -1.0) {
+        if (y < 0) {
+            if (::fmod(-y, 2.0) == 1.0)
+                return Value::fromDouble(-qInf());
+            else
+                return Value::fromDouble(qInf());
+        } else if (y > 0) {
+            if (::fmod(y, 2.0) == 1.0)
+                return Value::fromDouble(copySign(0, -1.0));
+            else
+                return Value::fromDouble(0);
+        }
+    }
+
+#ifdef Q_OS_AIX
+    else if (qIsInf(x) && copySign(1.0, x) == -1.0) {
+        if (y > 0) {
+            if (::fmod(y, 2.0) == 1.0)
+                return Value::number(ctx, -qInf());
+            else
+                return Value::number(ctx, qInf());
+        } else if (y < 0) {
+            if (::fmod(-y, 2.0) == 1.0)
+                return Value::number(ctx, copySign(0, -1.0));
+            else
+                return Value::number(ctx, 0);
+        }
+    }
+#endif
+    else {
+        return Value::fromDouble(::pow(x, y));
+    }
+    // ###
+    return Value::fromDouble(qSNaN());
+}
+
+Value MathObject::method_random(ExecutionContext */*ctx*/)
+{
+    return Value::fromDouble(qrand() / (double) RAND_MAX);
+}
+
+Value MathObject::method_round(ExecutionContext *ctx)
+{
+    double v = ctx->argument(0).toNumber(ctx);
+    v = copySign(::floor(v + 0.5), v);
+    return Value::fromDouble(v);
+}
+
+Value MathObject::method_sin(ExecutionContext *ctx)
+{
+    double v = ctx->argument(0).toNumber(ctx);
+    return Value::fromDouble(::sin(v));
+}
+
+Value MathObject::method_sqrt(ExecutionContext *ctx)
+{
+    double v = ctx->argument(0).toNumber(ctx);
+    return Value::fromDouble(::sqrt(v));
+}
+
+Value MathObject::method_tan(ExecutionContext *ctx)
+{
+    double v = ctx->argument(0).toNumber(ctx);
+    if (v == 0.0)
+        return Value::fromDouble(v);
+    else
+        return Value::fromDouble(::tan(v));
+}
+
diff --git a/qv4mathobject.h b/qv4mathobject.h
new file mode 100644
index 0000000..5f3f56f
--- /dev/null
+++ b/qv4mathobject.h
@@ -0,0 +1,77 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the V4VM module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef QV4MATHOBJECT_H
+#define QV$MATHOBJECT_H
+
+#include "qmljs_objects.h"
+
+namespace QQmlJS {
+
+namespace VM {
+
+struct MathObject: Object
+{
+    MathObject(ExecutionContext *ctx);
+
+    static Value method_abs(ExecutionContext *ctx);
+    static Value method_acos(ExecutionContext *ctx);
+    static Value method_asin(ExecutionContext *ctx);
+    static Value method_atan(ExecutionContext *ctx);
+    static Value method_atan2(ExecutionContext *ctx);
+    static Value method_ceil(ExecutionContext *ctx);
+    static Value method_cos(ExecutionContext *ctx);
+    static Value method_exp(ExecutionContext *ctx);
+    static Value method_floor(ExecutionContext *ctx);
+    static Value method_log(ExecutionContext *ctx);
+    static Value method_max(ExecutionContext *ctx);
+    static Value method_min(ExecutionContext *ctx);
+    static Value method_pow(ExecutionContext *ctx);
+    static Value method_random(ExecutionContext *ctx);
+    static Value method_round(ExecutionContext *ctx);
+    static Value method_sin(ExecutionContext *ctx);
+    static Value method_sqrt(ExecutionContext *ctx);
+    static Value method_tan(ExecutionContext *ctx);
+};
+
+} // namespace VM
+} // namespace QQmlJS
+
+#endif // QMLJS_OBJECTS_H
diff --git a/v4.pro b/v4.pro
index 2d1f575..69c4a0c 100644
--- a/v4.pro
+++ b/v4.pro
@@ -33,6 +33,7 @@ SOURCES += main.cpp \
     qv4functionobject.cpp \
     qv4globalobject.cpp \
     qv4jsonobject.cpp \
+    qv4mathobject.cpp \
     qv4regexpobject.cpp \
     qv4stringobject.cpp \
     qv4string.cpp \
@@ -63,6 +64,7 @@ HEADERS += \
     qv4functionobject.h \
     qv4globalobject.h \
     qv4jsonobject.h \
+    qv4mathobject.h \
     qv4regexpobject.h \
     qv4stringobject.h \
     qv4string.h \