text: #include "taia.h"
  
  /* XXX: breaks tai encapsulation */
  
  void taia_half(t,u)
  struct taia *t;
  struct taia *u;
  {
    t->atto = u->atto >> 1;
    if (u->nano & 1) t->atto += 500000000UL;
    t->nano = u->nano >> 1;
    if (u->sec.x & 1) t->nano += 500000000UL;
    t->sec.x = u->sec.x >> 1;
  }
  