> Alternatively you could put the static assertion with the comment > into the l field, i.e. > /* Statically assert that N is 2 or 4. */ > unsigned long l[(N == 2 || N == 4) ? N : -1];
I certainly prefer this alternative (the use of extern for that purpose being extremely confusing for a fortraner;-). However, if my test is valid, if N is not equal to 2 or 4, one gets the following error error: size of array 'l' is negative Would not it be better to have an explicit test of N being 2 or 4, and an error of the kind "the vector size has to be the size of 2 or 4 long" if not? I'll test the above change tonight: allow for ~14h for a clean bootstrap and Dominique
