static const float amptable[8]={ 0.515625, 0.90234375, 1.57910156, 2.76342773,
-0.515625,-0.90234375,-1.57910156,-2.76342773 };
static const float amptable[8]={ 0.515625, 0.90234375, 1.57910156, 2.76342773,
-0.515625,-0.90234375,-1.57910156,-2.76342773 };