Node:$LANGUAGE_NUM, Next:$LEN, Previous:$LANGUAGE, Up:Built-in functions
$LANGUAGE_NUM
: Number of current language$LANGUAGE_NUM
expands to an integer that uniquely defines the
current language, as follows:
Language $LANGUAGE_NUM
C 0
C++ 1
Fortran 2
Fortran-90 3
Ratfor 4
Ratfor-90 5
TeX 6
VERBATIM 7
This built-in is useful in conjunction with an $IFCASE
construction; see $IFCASE.