(PHP 4, PHP 5, PHP 7) Arc tangent float atan

(PECL stats >= 1.0.0) Not documented float

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Square root with remainder

(PECL trader >= 0.2.0) Relative Strength Index

(PECL trader >= 0.2.0) Vector Ceil array trader_ceil

(PECL trader >= 0.2.0) Vector Arithmetic Mult

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Finds whether a value is not a number

(PHP 7) Sets the RNG seed mixed gmp_random_seed

(PHP 4, PHP 5, PHP 7) Binary to decimal number

(PECL trader >= 0.2.0) Three Stars In The South