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# stats_cdf_uniform

(PECL stats >= 1.0.0)

stats_cdf_uniformCalculates any one parameter of the uniform distribution given values for the others

### 说明

stats_cdf_uniform ( float `\$par1` , float `\$par2` , float `\$par3` , int `\$which` ) : float

Returns the cumulative distribution function, its inverse, or one of its parameters, of the uniform distribution. The kind of the return value and parameters (`par1`, `par2`, and `par3`) are determined by `which`.

The following table lists the return value and parameters by `which`. CDF, x, a, and b denotes cumulative distribution function, the value of the random variable, the lower bound and the higher bound of the uniform distribution, respectively.

Return value and parameters
`which` Return value `par1` `par2` `par3`
1 CDF x a b
2 x CDF a b
3 a x CDF b
4 b x CDF a

### 参数

`par1`

The first parameter

`par2`

The second parameter

`par3`

The third parameter

`which`

The flag to determine what to be calculated

### 返回值

Returns CDF, x, a, or b, determined by `which`. 