int result = readBits(sampleLength-1);
int result; int bits = readBits(sampleLength-1);
  private int readSample(int sampleLength) throws IOException {    int sign = readBit();	/* 1 is positive, 0 is negative */    int result = readBits(sampleLength-1);    if (sign == 1)      result += 1 << (sampleLength-1);    else      result += (-1 << sampleLength) + 1;    return result;  }