- array
`abs`(array*x*) - iarray
`sign`(array*x*) - array
`exp`(array*x*) - array
`log`(array*x*) - array
`<int>`ProbRound(array`<double>`*x*) Round up or down with probability given by the difference between real value and the integers either side. For instance, if the argument's value is 0.2, then it has an 80% chance of being rounded down to 0, and a 20% chance of being rounded up to 1. Uses`array_urand`.