diff options
Diffstat (limited to 'src/qml/jsruntime/qv4mathobject.cpp')
-rw-r--r-- | src/qml/jsruntime/qv4mathobject.cpp | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/src/qml/jsruntime/qv4mathobject.cpp b/src/qml/jsruntime/qv4mathobject.cpp index cb17583b98..e03b2762cc 100644 --- a/src/qml/jsruntime/qv4mathobject.cpp +++ b/src/qml/jsruntime/qv4mathobject.cpp @@ -51,8 +51,9 @@ using namespace QV4; DEFINE_OBJECT_VTABLE(MathObject); -Heap::MathObject::MathObject() +void Heap::MathObject::init() { + Object::init(); Scope scope(internalClass->engine); ScopedObject m(scope, this); @@ -80,6 +81,7 @@ Heap::MathObject::MathObject() m->defineDefaultProperty(QStringLiteral("pow"), QV4::MathObject::method_pow, 2); m->defineDefaultProperty(QStringLiteral("random"), QV4::MathObject::method_random, 0); m->defineDefaultProperty(QStringLiteral("round"), QV4::MathObject::method_round, 1); + m->defineDefaultProperty(QStringLiteral("sign"), QV4::MathObject::method_sign, 1); m->defineDefaultProperty(QStringLiteral("sin"), QV4::MathObject::method_sin, 1); m->defineDefaultProperty(QStringLiteral("sqrt"), QV4::MathObject::method_sqrt, 1); m->defineDefaultProperty(QStringLiteral("tan"), QV4::MathObject::method_tan, 1); @@ -292,6 +294,19 @@ ReturnedValue MathObject::method_round(CallContext *context) return Encode(v); } +ReturnedValue MathObject::method_sign(CallContext *context) +{ + double v = context->argc() ? context->args()[0].toNumber() : qt_qnan(); + + if (std::isnan(v)) + return Encode(qt_qnan()); + + if (qIsNull(v)) + return v; + + return Encode(std::signbit(v) ? -1 : 1); +} + ReturnedValue MathObject::method_sin(CallContext *context) { double v = context->argc() ? context->args()[0].toNumber() : qt_qnan(); |