$PP
: The C preprocessor symbol ¶$PP
is shorthand for ‘$UNSTRING($P)’ (see $P
: The C preprocessor symbol), or
(essentially) a synonym for ‘$UNSTRING("#")’ (see $UNSTRING
: Convert string into characters).
It is useful, particularly in FORTRAN, for constructing FWEB
macro definitions that expand to C preprocessor statements. For an
example, see $P
: The C preprocessor symbol. For a detailed discussion of the difference
between ‘$P’ and ‘$PP’, see Strings and quotes.