/* Compute the sum of the squares of a vector of signed shorts *  Portable C version * Copyright 2004 Phil Karn, KA9Q * May be used under the terms of the GNU Lesser General Public License (LGPL) */unsigned long long sumsq_port(signed short *in,int cnt){  long long sum = 0;  int i;  for(i=0;i<cnt;i++){    sum += (int)in[i] * (int)in[i];  }  return sum;}