实现二进制定点运算:
1.定点整数补码加法
2.定点整数补码减法
3.定点小数Booth补码一位乘法
4.定点小数原码一位除法（加减交替法）
5.定点小数补码一位除法（加减交替法）
6.定点小数原码一位乘法
7.定点小数原码两位乘法
8.定点整数原码乘法
9.定点整数原码除法,achieve binary fixed point operations : 1. Sentinel integral complement Adder 2. Sentinel integral complement subtraction 3. Sentinel minority Booth complement a multiplication 4. Sentinel a few original code division (Modified alternate) 5. Sentinel minority complement one division (Modified alternate) 6 . sentinel decimal multiplication an original seven yards. sentinel original code two decimal multiplication 8. sentinel integer multiplication original nine yards. sentinel Integer original code division