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Implement extension functions for Random: nextUInt, nextULong and nextUBytes

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Given there's a Random API in the stdlib, that generates all random primitives, this commit adds the possibility to generate random unsigned integers.
It uses the same implementation from Random.nextInt, nextLong and nextBytes, but uses the appropriate conversions from a signed type to an unsigned type.

The use of the same API guarantees that the distribution is uniform, but this commit adds some unit test to enforce that necessity.

Fixes #KT-25570
This commit is contained in:
Kerooker
2018-08-22 09:43:39 -03:00
committed by Ilya Gorbunov
parent db131df751
commit f9dec5e794
3 changed files with 369 additions and 2 deletions
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libraries/tools/binary-compatibility-validator/reference-public-api/kotlin-stdlib-runtime-merged.txt
+12
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@@ -3894,6 +3894,18 @@ public final class kotlin/random/Random$Companion : kotlin/random/Random {
public final class kotlin/random/RandomKt {
public static final fun Random (I)Lkotlin/random/Random;
public static final fun Random (J)Lkotlin/random/Random;
public static final fun nextUBytes (Lkotlin/random/Random;I)[B
public static final fun nextUBytes-4zielkbi (Lkotlin/random/Random;[BII)[B
public static synthetic fun nextUBytes-4zielkbi$default (Lkotlin/random/Random;[BIIILjava/lang/Object;)[B
public static final fun nextUBytes-y7z55vk (Lkotlin/random/Random;[B)[B
public static final fun nextUInt (Lkotlin/random/Random;)I
public static final fun nextUInt (Lkotlin/random/Random;Lkotlin/ranges/UIntRange;)I
public static final fun nextUInt-5wlsgfq1 (Lkotlin/random/Random;II)I
public static final fun nextUInt-97rx7kg5 (Lkotlin/random/Random;I)I
public static final fun nextULong (Lkotlin/random/Random;)J
public static final fun nextULong (Lkotlin/random/Random;Lkotlin/ranges/ULongRange;)J
public static final fun nextULong-4sbioyd2 (Lkotlin/random/Random;J)J
public static final fun nextULong-7szwbobr (Lkotlin/random/Random;JJ)J
}
public class kotlin/ranges/CharProgression : java/lang/Iterable, kotlin/jvm/internal/markers/KMappedMarker {