(PECL stats >= 1.0.0) Not documented float

(PECL stats >= 1.0.0) Generates a single random deviate from a T distribution

(PHP 4, PHP 5, PHP 7) Calculates the exponent of e

(PHP 4, PHP 5, PHP 7) Generate a better random value

(PECL stats >= 1.0.0) Not documented float

(PECL stats >= 1.0.0) Returns the population variance

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Absolute value

(PHP 4, PHP 5, PHP 7) Arc sine float asin ( float

(PHP 4, PHP 5, PHP 7) Set default scale parameter for all bc math functions

(PHP 4, PHP 5, PHP 7) Arc cosine float acos (