https://learn.microsoft.com/en-us/dotnet/api/system.reflection.emit.opcodes.ckfinite?view=netframework-4.8.1&viewFallbackFrom=net-10.0
OpCodes.Ckfinite Field (System.Reflection.Emit) | Microsoft Learn
Throws ArithmeticException if value is not a finite number.
field systemopcodesreflectionemitmicrosoft