12.2.2.16 ‘-ylx’: Maximum length of expressions that can be expanded with the post-increment operators of FORTRAN or RATFOR

FORTRAN and RATFOR can expand expressions such as ‘x(i) += dx’ into their FORTRAN counterparts such as ‘x(i) = x(i) + dx’. It does so in a very straightforward way, by copying the expression to the left of the equals sign. ‘-ylx’ controls the maximum size of that expression.