Enumeration Case
列挙ケース
Floating
FloatingPointClassification.quietNaN
A silent NaN (“not a number”) value.
silent NaN（非数）値。
Availability
- iOS 8.0+
- iPadOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
- Xcode 8.0+
Technology
- Swift Standard Library Swift標準ライブラリ
Declaration 宣言
case quietNaN