previousClearBit

Platform and version requirements: Native (1.3)

fun previousClearBit(startIndex: Int): Int

Returns the biggest index of a bit which value is false before startIndex (inclusive). Returns -1 if there is no such bits before startIndex or if startIndex == -1. If startIndex >= size will return startIndex assuming that the set has an infinite sequence of false bits after (size - 1)-th.

Exceptions

IndexOutOfBoundException - if startIndex < -1.