namespace System
{
    public readonly struct Half : IComparable, IComparable<Half>, IEquatable<Half>, IFormattable, IParsable<Half>, ISpanFormattable, ISpanParsable<Half>, IUtf8SpanFormattable, IUtf8SpanParsable<Half>, IAdditionOperators<Half, Half, Half>, IAdditiveIdentity<Half, Half>, IBinaryFloatingPointIeee754<Half>, IBinaryNumber<Half>, IBitwiseOperators<Half, Half, Half>, IComparisonOperators<Half, Half, bool>, IDecrementOperators<Half>, IDivisionOperators<Half, Half, Half>, IEqualityOperators<Half, Half, bool>, IExponentialFunctions<Half>, IFloatingPoint<Half>, IFloatingPointConstants<Half>, IFloatingPointIeee754<Half>, IHyperbolicFunctions<Half>, IIncrementOperators<Half>, ILogarithmicFunctions<Half>, IMinMaxValue<Half>, IModulusOperators<Half, Half, Half>, IMultiplicativeIdentity<Half, Half>, IMultiplyOperators<Half, Half, Half>, INumber<Half>, INumberBase<Half>, IPowerFunctions<Half>, IRootFunctions<Half>, ISignedNumber<Half>, ISubtractionOperators<Half, Half, Half>, ITrigonometricFunctions<Half>, IUnaryNegationOperators<Half, Half>, IUnaryPlusOperators<Half, Half>
    {
        public static Half Tanh(Half x);
    }
}