int reducedQuarticRoots(const double t4, const double t3, const double t2, const double t1,
const double t0, const bool oneHint, double roots[4]) {
-#if SK_DEBUG
+#ifdef SK_DEBUG
// create a string mathematica understands
// GDB set print repe 15 # if repeated digits is a bother
// set print elements 400 # if line doesn't fit