(PHP 4, PHP 5, PHP 7) Rounds a float float round

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Legendre symbol

(PHP 4, PHP 5, PHP 7) Decimal to binary string

(PHP 4, PHP 5, PHP 7) Show largest possible random value

(PHP 4, PHP 5, PHP 7) Get the square root of an arbitrary precision number

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Create GMP number

(PHP 4, PHP 5, PHP 7) Absolute value number abs

(PECL trader >= 0.2.0) Dark Cloud Cover array

(PECL stats >= 1.0.0) Calculates any one parameter of the binomial distribution given values for the others

(PHP 4, PHP 5, PHP 7) Base-10 logarithm float