The floating point feature set consists of the user-visible floating-point data types float32 and float64, and support for an internal representation of floating-point numbers.
If omitted: The CIL instructions that deal specifically with these data types throw the System.NotImplementedException exception. These instructions are: ckfinite, conv.r.un, conv.r4, conv.r8, ldc.r4, ldc.r8, ldelem.r4, ldelem.r8, ldind.r4, ldind.r8, stelem.r4, stelem.r8, stind.r4, stind.r8. Any attempt to reference a signature including the floating-point data types shall throw the System.NotImplementedException exception. The precise timing of the exception is not specified.
[Note: These restrictions guarantee that the VES will not encounter any floating-point data. Hence the implementation of the arithmetic instructions (such as add) need not handle those types. end note]
Part of Library: Extended Numerics (§IV.5.7)