# fdiv

(PHP 8)

fdiv — Divides two numbers, according to IEEE 754

### 说明

fdiv(float `$num1`, float `$num2`): float

Returns the floating point result of dividing the `num1` by the `num2`. If the `num2` is zero, then one of `INF`, -`INF`, or `NAN` will be returned.

Note that in comparisons, `NAN` will never be equal (`==`) or identical (`===`) to any value, including itself.

### 参数

`num1`

  The dividend (numerator)

`num2`

  The divisor

### 返回值

The floating point result of `num1`/`num2`

### 示例

示例 #1 Using fdiv()

`<?php
var_dump(fdiv(5.7, 1.3)); // float(4.384615384615385)
var_dump(fdiv(4, 2)); // float(2)
var_dump(fdiv(1.0, 0.0)); // float(INF)
var_dump(fdiv(-1.0, 0.0)); // float(-INF)
var_dump(fdiv(0.0, 0.0)); // float(NAN)
?>`

### 参见

- Division operator `/`
- intdiv() - 对除法结果取整 - Integer division
- fmod() - 返回除法的浮点数余数
- fpow() - Raise one number to the power of another, according to IEEE 754

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