.TP
.B < >= < <= == !=
.PP
+The \fB$\fR operator performs sign extension. \fIn\fB$\fIx\fR truncates \fIx\fR to \fIn\fR bits and sign extends.
+If \fIn\fR is omitted, it is inferred from the highest set bit (the result is always ≤ 0 in this case).
+.PP
Variables can be defined using
.BR = .
The builtin variable