Class timerange

zic.c:2611–2616

atcomp(const void *avp, const void *bvp)
{
  struct attype const *ap = avp, *bp = bvp;
  zic_t a = ap->at, b = bp->at;
  return a < b ? -1 : a > b;
}

struct timerange {
  int defaulttype;
  ptrdiff_t base, count;
  ptrdiff_t leapbase, leapcount;