previousSetBit
Platform and version requirements: Native (1.3)
fun previousSetBit(startIndex: Int): Int
Returns the biggest index of a bit which value is true before startIndex (inclusive). Returns -1 if there is no such bits before startIndex or if startIndex == -1. If startIndex >= size will search from (size - 1)-th bit.
Exceptions
IndexOutOfBoundException - if startIndex < -1.
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Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.native/-bit-set/previous-set-bit.html