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                            **一.被零整除報錯拋出DivisionByZeroError異常**
```
1.1/0
2.intdiv(1,0)
```

&emsp;
**二.遵循關于浮點運算法則的IEEE-754標準，并以浮點數形式返回**
#正無窮大INF，float類型
```
1.fdiv(1,0)
var_dump(fdiv(1,0));
```

#負無窮大-INF，float類型
```
2.fdiv(1,0)
var_dump(fdiv(-1,0));
```

&emsp;
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