toFloat           471 Source/bindings/v8/V8Binding.cpp float toFloat(v8::Handle<v8::Value> value, ExceptionState& exceptionState)
toFloat          1079 Source/wtf/text/StringImpl.cpp float StringImpl::toFloat(bool* ok)
toFloat           660 Source/wtf/text/WTFString.cpp float String::toFloat(bool* ok) const