c2ln
#define c2ln(c, l1, l2, n) \
#undef c2ln
#define c2ln(c, l1, l2, n) \
#undef c2ln
#define c2ln(c, l1, l2, n) \
#define c2ln(c, l1, l2, n) \
#define c2ln(c,l1,l2,n) { \