(PHP 4 >= 4.0.4, PHP 5, PHP 7) Sign of number

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Convert GMP number to integer

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Negate number

(PECL stats >= 1.0.0) Not documented float

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Remainder of the division of numbers

(PECL stats >= 1.0.0) Not documented float

(PHP 4, PHP 5, PHP 7) Raise an arbitrary precision number to another

(PHP 4, PHP 5, PHP 7) Generate a random integer

(PECL trader >= 0.2.0) Bollinger Bands array

(PECL trader >= 0.2.0) Lowest and highest values over a specified period