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PHP stats_cdf_laplace

PHP original manual for stats_cdf_laplace [ show | php.net ]


(PECL stats >= 1.0.0)

stats_cdf_laplaceCalculates any one parameter of the Laplace distribution given values for the others


float stats_cdf_laplace ( float $par1 , float $par2 , float $par3 , int $which )

Returns the cumulative distribution function, its inverse, or one of its parameters, of the Laplace 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, mu, and b denotes cumurative distribution function, the value of the random variable, and the location and the scale parameter of the Laplace distribution, respectively.

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



The first parameter


The second parameter


The third parameter


The flag to determine what to be calculated

Return Values

Returns CDF, x, mu, or b, determined by which.