.B TV_CMP
is stolen from the
.B timercmp
-macro in the GNU C library. I don't know whether this macro is a GNU
-original, but it certainly doesn't seem to be portable. The
+macro in the GNU C library. This doesn't look like a GNU original,
+however; whatever, it doesn't seem to be very portable. The GNU
.B timercmp
macro had a warning attached to it that it wouldn't work for operators
like