isNaN() private method

private isNaN ( Object num ) : bool
num Object
return bool
        internal static object QuickCall(object[] args, object thisob, JSBuiltin biFunc, MethodInfo method, VsaEngine engine)
        {
            int length = args.Length;

            switch (biFunc)
            {
            case JSBuiltin.Array_concat:
                return(ArrayPrototype.concat(thisob, engine, args));

            case JSBuiltin.Array_join:
                return(ArrayPrototype.join(thisob, GetArg(args, 0, length)));

            case JSBuiltin.Array_pop:
                return(ArrayPrototype.pop(thisob));

            case JSBuiltin.Array_push:
                return(ArrayPrototype.push(thisob, args));

            case JSBuiltin.Array_reverse:
                return(ArrayPrototype.reverse(thisob));

            case JSBuiltin.Array_shift:
                return(ArrayPrototype.shift(thisob));

            case JSBuiltin.Array_slice:
                return(ArrayPrototype.slice(thisob, engine, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), GetArg(args, 1, length)));

            case JSBuiltin.Array_sort:
                return(ArrayPrototype.sort(thisob, GetArg(args, 0, length)));

            case JSBuiltin.Array_splice:
                return(ArrayPrototype.splice(thisob, engine, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), Microsoft.JScript.Convert.ToNumber(GetArg(args, 1, length)), VarArgs(args, 2, length)));

            case JSBuiltin.Array_toLocaleString:
                return(ArrayPrototype.toLocaleString(thisob));

            case JSBuiltin.Array_toString:
                return(ArrayPrototype.toString(thisob));

            case JSBuiltin.Array_unshift:
                return(ArrayPrototype.unshift(thisob, args));

            case JSBuiltin.Boolean_toString:
                return(BooleanPrototype.toString(thisob));

            case JSBuiltin.Boolean_valueOf:
                return(BooleanPrototype.valueOf(thisob));

            case JSBuiltin.Date_getDate:
                return(DatePrototype.getDate(thisob));

            case JSBuiltin.Date_getDay:
                return(DatePrototype.getDay(thisob));

            case JSBuiltin.Date_getFullYear:
                return(DatePrototype.getFullYear(thisob));

            case JSBuiltin.Date_getHours:
                return(DatePrototype.getHours(thisob));

            case JSBuiltin.Date_getMilliseconds:
                return(DatePrototype.getMilliseconds(thisob));

            case JSBuiltin.Date_getMinutes:
                return(DatePrototype.getMinutes(thisob));

            case JSBuiltin.Date_getMonth:
                return(DatePrototype.getMonth(thisob));

            case JSBuiltin.Date_getSeconds:
                return(DatePrototype.getSeconds(thisob));

            case JSBuiltin.Date_getTime:
                return(DatePrototype.getTime(thisob));

            case JSBuiltin.Date_getTimezoneOffset:
                return(DatePrototype.getTimezoneOffset(thisob));

            case JSBuiltin.Date_getUTCDate:
                return(DatePrototype.getUTCDate(thisob));

            case JSBuiltin.Date_getUTCDay:
                return(DatePrototype.getUTCDay(thisob));

            case JSBuiltin.Date_getUTCFullYear:
                return(DatePrototype.getUTCFullYear(thisob));

            case JSBuiltin.Date_getUTCHours:
                return(DatePrototype.getUTCHours(thisob));

            case JSBuiltin.Date_getUTCMilliseconds:
                return(DatePrototype.getUTCMilliseconds(thisob));

            case JSBuiltin.Date_getUTCMinutes:
                return(DatePrototype.getUTCMinutes(thisob));

            case JSBuiltin.Date_getUTCMonth:
                return(DatePrototype.getUTCMonth(thisob));

            case JSBuiltin.Date_getUTCSeconds:
                return(DatePrototype.getUTCSeconds(thisob));

            case JSBuiltin.Date_getVarDate:
                return(DatePrototype.getVarDate(thisob));

            case JSBuiltin.Date_getYear:
                return(DatePrototype.getYear(thisob));

            case JSBuiltin.Date_parse:
                return(DateConstructor.parse(Microsoft.JScript.Convert.ToString(GetArg(args, 0, length))));

            case JSBuiltin.Date_setDate:
                return(DatePrototype.setDate(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Date_setFullYear:
                return(DatePrototype.setFullYear(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), GetArg(args, 1, length), GetArg(args, 2, length)));

            case JSBuiltin.Date_setHours:
                return(DatePrototype.setHours(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), GetArg(args, 1, length), GetArg(args, 2, length), GetArg(args, 3, length)));

            case JSBuiltin.Date_setMinutes:
                return(DatePrototype.setMinutes(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), GetArg(args, 1, length), GetArg(args, 2, length)));

            case JSBuiltin.Date_setMilliseconds:
                return(DatePrototype.setMilliseconds(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Date_setMonth:
                return(DatePrototype.setMonth(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), GetArg(args, 1, length)));

            case JSBuiltin.Date_setSeconds:
                return(DatePrototype.setSeconds(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), GetArg(args, 1, length)));

            case JSBuiltin.Date_setTime:
                return(DatePrototype.setTime(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Date_setUTCDate:
                return(DatePrototype.setUTCDate(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Date_setUTCFullYear:
                return(DatePrototype.setUTCFullYear(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), GetArg(args, 1, length), GetArg(args, 2, length)));

            case JSBuiltin.Date_setUTCHours:
                return(DatePrototype.setUTCHours(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), GetArg(args, 1, length), GetArg(args, 2, length), GetArg(args, 3, length)));

            case JSBuiltin.Date_setUTCMinutes:
                return(DatePrototype.setUTCMinutes(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), GetArg(args, 1, length), GetArg(args, 2, length)));

            case JSBuiltin.Date_setUTCMilliseconds:
                return(DatePrototype.setUTCMilliseconds(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Date_setUTCMonth:
                return(DatePrototype.setUTCMonth(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), GetArg(args, 1, length)));

            case JSBuiltin.Date_setUTCSeconds:
                return(DatePrototype.setUTCSeconds(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), GetArg(args, 1, length)));

            case JSBuiltin.Date_setYear:
                return(DatePrototype.setYear(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Date_toDateString:
                return(DatePrototype.toDateString(thisob));

            case JSBuiltin.Date_toGMTString:
                return(DatePrototype.toGMTString(thisob));

            case JSBuiltin.Date_toLocaleDateString:
                return(DatePrototype.toLocaleDateString(thisob));

            case JSBuiltin.Date_toLocaleString:
                return(DatePrototype.toLocaleString(thisob));

            case JSBuiltin.Date_toLocaleTimeString:
                return(DatePrototype.toLocaleTimeString(thisob));

            case JSBuiltin.Date_toString:
                return(DatePrototype.toString(thisob));

            case JSBuiltin.Date_toTimeString:
                return(DatePrototype.toTimeString(thisob));

            case JSBuiltin.Date_toUTCString:
                return(DatePrototype.toUTCString(thisob));

            case JSBuiltin.Date_UTC:
                return(DateConstructor.UTC(GetArg(args, 0, length), GetArg(args, 1, length), GetArg(args, 2, length), GetArg(args, 3, length), GetArg(args, 4, length), GetArg(args, 5, length), GetArg(args, 6, length)));

            case JSBuiltin.Date_valueOf:
                return(DatePrototype.valueOf(thisob));

            case JSBuiltin.Enumerator_atEnd:
                return(EnumeratorPrototype.atEnd(thisob));

            case JSBuiltin.Enumerator_item:
                return(EnumeratorPrototype.item(thisob));

            case JSBuiltin.Enumerator_moveFirst:
                EnumeratorPrototype.moveFirst(thisob);
                return(null);

            case JSBuiltin.Enumerator_moveNext:
                EnumeratorPrototype.moveNext(thisob);
                return(null);

            case JSBuiltin.Error_toString:
                return(ErrorPrototype.toString(thisob));

            case JSBuiltin.Function_apply:
                return(FunctionPrototype.apply(thisob, GetArg(args, 0, length), GetArg(args, 1, length)));

            case JSBuiltin.Function_call:
                return(FunctionPrototype.call(thisob, GetArg(args, 0, length), VarArgs(args, 1, length)));

            case JSBuiltin.Function_toString:
                return(FunctionPrototype.toString(thisob));

            case JSBuiltin.Global_CollectGarbage:
                GlobalObject.CollectGarbage();
                return(null);

            case JSBuiltin.Global_decodeURI:
                return(GlobalObject.decodeURI(GetArg(args, 0, length)));

            case JSBuiltin.Global_decodeURIComponent:
                return(GlobalObject.decodeURIComponent(GetArg(args, 0, length)));

            case JSBuiltin.Global_encodeURI:
                return(GlobalObject.encodeURI(GetArg(args, 0, length)));

            case JSBuiltin.Global_encodeURIComponent:
                return(GlobalObject.encodeURIComponent(GetArg(args, 0, length)));

            case JSBuiltin.Global_escape:
                return(GlobalObject.escape(GetArg(args, 0, length)));

            case JSBuiltin.Global_eval:
                return(GlobalObject.eval(GetArg(args, 0, length)));

            case JSBuiltin.Global_GetObject:
                return(GlobalObject.GetObject(GetArg(args, 0, length), GetArg(args, 1, length)));

            case JSBuiltin.Global_isNaN:
                return(GlobalObject.isNaN(GetArg(args, 0, length)));

            case JSBuiltin.Global_isFinite:
                return(GlobalObject.isFinite(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Global_parseFloat:
                return(GlobalObject.parseFloat(GetArg(args, 0, length)));

            case JSBuiltin.Global_parseInt:
                return(GlobalObject.parseInt(GetArg(args, 0, length), GetArg(args, 1, length)));

            case JSBuiltin.Global_ScriptEngine:
                return(GlobalObject.ScriptEngine());

            case JSBuiltin.Global_ScriptEngineBuildVersion:
                return(GlobalObject.ScriptEngineBuildVersion());

            case JSBuiltin.Global_ScriptEngineMajorVersion:
                return(GlobalObject.ScriptEngineMajorVersion());

            case JSBuiltin.Global_ScriptEngineMinorVersion:
                return(GlobalObject.ScriptEngineMinorVersion());

            case JSBuiltin.Global_unescape:
                return(GlobalObject.unescape(GetArg(args, 0, length)));

            case JSBuiltin.Math_abs:
                return(MathObject.abs(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Math_acos:
                return(MathObject.acos(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Math_asin:
                return(MathObject.asin(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Math_atan:
                return(MathObject.atan(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Math_atan2:
                return(MathObject.atan2(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), Microsoft.JScript.Convert.ToNumber(GetArg(args, 1, length))));

            case JSBuiltin.Math_ceil:
                return(MathObject.ceil(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Math_cos:
                return(MathObject.cos(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Math_exp:
                return(MathObject.exp(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Math_floor:
                return(MathObject.floor(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Math_log:
                return(MathObject.log(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Math_max:
                return(MathObject.max(GetArg(args, 0, length), GetArg(args, 1, length), VarArgs(args, 2, length)));

            case JSBuiltin.Math_min:
                return(MathObject.min(GetArg(args, 0, length), GetArg(args, 1, length), VarArgs(args, 2, length)));

            case JSBuiltin.Math_pow:
                return(MathObject.pow(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), Microsoft.JScript.Convert.ToNumber(GetArg(args, 1, length))));

            case JSBuiltin.Math_random:
                return(MathObject.random());

            case JSBuiltin.Math_round:
                return(MathObject.round(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Math_sin:
                return(MathObject.sin(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Math_sqrt:
                return(MathObject.sqrt(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Math_tan:
                return(MathObject.tan(Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Number_toExponential:
                return(NumberPrototype.toExponential(thisob, GetArg(args, 0, length)));

            case JSBuiltin.Number_toFixed:
                return(NumberPrototype.toFixed(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.Number_toLocaleString:
                return(NumberPrototype.toLocaleString(thisob));

            case JSBuiltin.Number_toPrecision:
                return(NumberPrototype.toPrecision(thisob, GetArg(args, 0, length)));

            case JSBuiltin.Number_toString:
                return(NumberPrototype.toString(thisob, GetArg(args, 0, length)));

            case JSBuiltin.Number_valueOf:
                return(NumberPrototype.valueOf(thisob));

            case JSBuiltin.Object_hasOwnProperty:
                return(ObjectPrototype.hasOwnProperty(thisob, GetArg(args, 0, length)));

            case JSBuiltin.Object_isPrototypeOf:
                return(ObjectPrototype.isPrototypeOf(thisob, GetArg(args, 0, length)));

            case JSBuiltin.Object_propertyIsEnumerable:
                return(ObjectPrototype.propertyIsEnumerable(thisob, GetArg(args, 0, length)));

            case JSBuiltin.Object_toLocaleString:
                return(ObjectPrototype.toLocaleString(thisob));

            case JSBuiltin.Object_toString:
                return(ObjectPrototype.toString(thisob));

            case JSBuiltin.Object_valueOf:
                return(ObjectPrototype.valueOf(thisob));

            case JSBuiltin.RegExp_compile:
                return(RegExpPrototype.compile(thisob, GetArg(args, 0, length), GetArg(args, 1, length)));

            case JSBuiltin.RegExp_exec:
                return(RegExpPrototype.exec(thisob, GetArg(args, 0, length)));

            case JSBuiltin.RegExp_test:
                return(RegExpPrototype.test(thisob, GetArg(args, 0, length)));

            case JSBuiltin.RegExp_toString:
                return(RegExpPrototype.toString(thisob));

            case JSBuiltin.String_anchor:
                return(StringPrototype.anchor(thisob, GetArg(args, 0, length)));

            case JSBuiltin.String_big:
                return(StringPrototype.big(thisob));

            case JSBuiltin.String_blink:
                return(StringPrototype.blink(thisob));

            case JSBuiltin.String_bold:
                return(StringPrototype.bold(thisob));

            case JSBuiltin.String_charAt:
                return(StringPrototype.charAt(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.String_charCodeAt:
                return(StringPrototype.charCodeAt(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length))));

            case JSBuiltin.String_concat:
                return(StringPrototype.concat(thisob, args));

            case JSBuiltin.String_fixed:
                return(StringPrototype.@fixed(thisob));

            case JSBuiltin.String_fontcolor:
                return(StringPrototype.fontcolor(thisob, GetArg(args, 0, length)));

            case JSBuiltin.String_fontsize:
                return(StringPrototype.fontsize(thisob, GetArg(args, 0, length)));

            case JSBuiltin.String_fromCharCode:
                return(StringConstructor.fromCharCode(args));

            case JSBuiltin.String_indexOf:
                return(StringPrototype.indexOf(thisob, GetArg(args, 0, length), Microsoft.JScript.Convert.ToNumber(GetArg(args, 1, length))));

            case JSBuiltin.String_italics:
                return(StringPrototype.italics(thisob));

            case JSBuiltin.String_lastIndexOf:
                return(StringPrototype.lastIndexOf(thisob, GetArg(args, 0, length), Microsoft.JScript.Convert.ToNumber(GetArg(args, 1, length))));

            case JSBuiltin.String_link:
                return(StringPrototype.link(thisob, GetArg(args, 0, length)));

            case JSBuiltin.String_localeCompare:
                return(StringPrototype.localeCompare(thisob, GetArg(args, 0, length)));

            case JSBuiltin.String_match:
                return(StringPrototype.match(thisob, engine, GetArg(args, 0, length)));

            case JSBuiltin.String_replace:
                return(StringPrototype.replace(thisob, GetArg(args, 0, length), GetArg(args, 1, length)));

            case JSBuiltin.String_search:
                return(StringPrototype.search(thisob, engine, GetArg(args, 0, length)));

            case JSBuiltin.String_slice:
                return(StringPrototype.slice(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), GetArg(args, 1, length)));

            case JSBuiltin.String_small:
                return(StringPrototype.small(thisob));

            case JSBuiltin.String_split:
                return(StringPrototype.split(thisob, engine, GetArg(args, 0, length), GetArg(args, 1, length)));

            case JSBuiltin.String_strike:
                return(StringPrototype.strike(thisob));

            case JSBuiltin.String_sub:
                return(StringPrototype.sub(thisob));

            case JSBuiltin.String_substr:
                return(StringPrototype.substr(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), GetArg(args, 1, length)));

            case JSBuiltin.String_substring:
                return(StringPrototype.substring(thisob, Microsoft.JScript.Convert.ToNumber(GetArg(args, 0, length)), GetArg(args, 1, length)));

            case JSBuiltin.String_sup:
                return(StringPrototype.sup(thisob));

            case JSBuiltin.String_toLocaleLowerCase:
                return(StringPrototype.toLocaleLowerCase(thisob));

            case JSBuiltin.String_toLocaleUpperCase:
                return(StringPrototype.toLocaleUpperCase(thisob));

            case JSBuiltin.String_toLowerCase:
                return(StringPrototype.toLowerCase(thisob));

            case JSBuiltin.String_toString:
                return(StringPrototype.toString(thisob));

            case JSBuiltin.String_toUpperCase:
                return(StringPrototype.toUpperCase(thisob));

            case JSBuiltin.String_valueOf:
                return(StringPrototype.valueOf(thisob));

            case JSBuiltin.VBArray_dimensions:
                return(VBArrayPrototype.dimensions(thisob));

            case JSBuiltin.VBArray_getItem:
                return(VBArrayPrototype.getItem(thisob, args));

            case JSBuiltin.VBArray_lbound:
                return(VBArrayPrototype.lbound(thisob, GetArg(args, 0, length)));

            case JSBuiltin.VBArray_toArray:
                return(VBArrayPrototype.toArray(thisob, engine));

            case JSBuiltin.VBArray_ubound:
                return(VBArrayPrototype.ubound(thisob, GetArg(args, 0, length)));
            }
            return(method.Invoke(thisob, BindingFlags.Default, JSBinder.ob, args, null));
        }