Force the L-value and R-value to match for real values.
Force the L-value and R-value to match for real values.

Check that if either the L-value or the R-value are real then both
must be real. This prevents a runtime crash.

CastMi/iverilog,themperek/iverilog,themperek/iverilog,CastMi/iverilog,themperek/iverilog,CastMi/iverilog