80     // 2. If number is NaN, +infinite, or -infinite, return false  in IsFinite()
96     // 2. If number is NaN, +infinite, or -infinite, return false  in IsInteger()
116     // 2. If number is NaN, return true.  in IsNaN()
133     // 2. If number is NaN, +infinite, or -infinite, return false  in IsSafeInteger()
165     // (see 7.1.3.1), return NaN.  in ParseFloat()
220     // 6. If x is NaN, return the String "NaN".  in ToExponential()
222         return GetTaggedString(thread, "NaN");  in ToExponential()
274     // 6. If x is NaN, return the String "NaN".  in ToFixed()
355     // 6. If x is NaN, return the String "NaN".  in ToPrecision()
358         return GetTaggedString(thread, "NaN");  in ToPrecision()
411     // If x is NaN, return the String "NaN".  in ToString()
413         return GetTaggedString(thread, "NaN");  in ToString()