Mathf.LerpAngle replacement missing

I added the following code to TSMath. It seems working

I used the code in this repository : https://github.com/MattRix/UnityDecompiled/blob/master/UnityEngine/UnityEngine/Mathf.cs

public static FP LerpAngle(FP a, FP b, FP t)
{
FP num = Repeat(b - a, FP.FromFloat(360f));
if (num > FP.FromFloat(180f))
{
num -= FP.FromFloat(360f);
}
return a + num * Clamp01(t);
}

public static FP Clamp01(FP value)
{
FP result;
if (value < FP.Zero)
{
result = FP.Zero;
}
else if (value > FP.One)
{
result = FP.One;
}
else
{
result = value;
}
return result;
}

public static FP Repeat(FP t, FP length)
{
return Clamp(t - Floor(t / length) * length, FP.Zero, length);
}