Implement sum extension function for UArrays (KT-28779)

libraries/stdlib/common/src/generated/_UArrays.kt

@@ -3735,3 +3735,99 @@ public inline fun UShortArray.sumByDouble(selector: (UShort) -> Double): Double
     return sum
 }
 
+/**
+ * Returns the sum of all elements in the array.
+ */
+@kotlin.jvm.JvmName("sumOfUInt")
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+public fun Array<out UInt>.sum(): UInt {
+    var sum: UInt = 0u
+    for (element in this) {
+        sum += element
+    }
+    return sum
+}
+
+/**
+ * Returns the sum of all elements in the array.
+ */
+@kotlin.jvm.JvmName("sumOfULong")
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+public fun Array<out ULong>.sum(): ULong {
+    var sum: ULong = 0uL
+    for (element in this) {
+        sum += element
+    }
+    return sum
+}
+
+/**
+ * Returns the sum of all elements in the array.
+ */
+@kotlin.jvm.JvmName("sumOfUByte")
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+public fun Array<out UByte>.sum(): UInt {
+    var sum: UInt = 0u
+    for (element in this) {
+        sum += element
+    }
+    return sum
+}
+
+/**
+ * Returns the sum of all elements in the array.
+ */
+@kotlin.jvm.JvmName("sumOfUShort")
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+public fun Array<out UShort>.sum(): UInt {
+    var sum: UInt = 0u
+    for (element in this) {
+        sum += element
+    }
+    return sum
+}
+
+/**
+ * Returns the sum of all elements in the array.
+ */
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+@kotlin.internal.InlineOnly
+public inline fun UIntArray.sum(): UInt {
+    return storage.sum().toUInt()
+}
+
+/**
+ * Returns the sum of all elements in the array.
+ */
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+@kotlin.internal.InlineOnly
+public inline fun ULongArray.sum(): ULong {
+    return storage.sum().toULong()
+}
+
+/**
+ * Returns the sum of all elements in the array.
+ */
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+@kotlin.internal.InlineOnly
+public inline fun UByteArray.sum(): UInt {
+    return sumBy { it.toUInt() }
+}
+
+/**
+ * Returns the sum of all elements in the array.
+ */
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+@kotlin.internal.InlineOnly
+public inline fun UShortArray.sum(): UInt {
+    return sumBy { it.toUInt() }
+}
+

libraries/stdlib/common/src/generated/_UCollections.kt

@@ -67,3 +67,59 @@ public fun Collection<UShort>.toUShortArray(): UShortArray {
     return result
 }
 
+/**
+ * Returns the sum of all elements in the collection.
+ */
+@kotlin.jvm.JvmName("sumOfUInt")
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+public fun Iterable<UInt>.sum(): UInt {
+    var sum: UInt = 0u
+    for (element in this) {
+        sum += element
+    }
+    return sum
+}
+
+/**
+ * Returns the sum of all elements in the collection.
+ */
+@kotlin.jvm.JvmName("sumOfULong")
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+public fun Iterable<ULong>.sum(): ULong {
+    var sum: ULong = 0uL
+    for (element in this) {
+        sum += element
+    }
+    return sum
+}
+
+/**
+ * Returns the sum of all elements in the collection.
+ */
+@kotlin.jvm.JvmName("sumOfUByte")
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+public fun Iterable<UByte>.sum(): UInt {
+    var sum: UInt = 0u
+    for (element in this) {
+        sum += element
+    }
+    return sum
+}
+
+/**
+ * Returns the sum of all elements in the collection.
+ */
+@kotlin.jvm.JvmName("sumOfUShort")
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+public fun Iterable<UShort>.sum(): UInt {
+    var sum: UInt = 0u
+    for (element in this) {
+        sum += element
+    }
+    return sum
+}
+

libraries/stdlib/common/src/generated/_USequences.kt

@@ -0,0 +1,81 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license 
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+@file:kotlin.jvm.JvmMultifileClass
+@file:kotlin.jvm.JvmName("USequencesKt")
+
+package kotlin.sequences
+
+//
+// NOTE: THIS FILE IS AUTO-GENERATED by the GenerateStandardLib.kt
+// See: https://github.com/JetBrains/kotlin/tree/master/libraries/stdlib
+//
+
+import kotlin.random.*
+
+/**
+ * Returns the sum of all elements in the sequence.
+ *
+ * The operation is _terminal_.
+ */
+@kotlin.jvm.JvmName("sumOfUInt")
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+public fun Sequence<UInt>.sum(): UInt {
+    var sum: UInt = 0u
+    for (element in this) {
+        sum += element
+    }
+    return sum
+}
+
+/**
+ * Returns the sum of all elements in the sequence.
+ *
+ * The operation is _terminal_.
+ */
+@kotlin.jvm.JvmName("sumOfULong")
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+public fun Sequence<ULong>.sum(): ULong {
+    var sum: ULong = 0uL
+    for (element in this) {
+        sum += element
+    }
+    return sum
+}
+
+/**
+ * Returns the sum of all elements in the sequence.
+ *
+ * The operation is _terminal_.
+ */
+@kotlin.jvm.JvmName("sumOfUByte")
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+public fun Sequence<UByte>.sum(): UInt {
+    var sum: UInt = 0u
+    for (element in this) {
+        sum += element
+    }
+    return sum
+}
+
+/**
+ * Returns the sum of all elements in the sequence.
+ *
+ * The operation is _terminal_.
+ */
+@kotlin.jvm.JvmName("sumOfUShort")
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+public fun Sequence<UShort>.sum(): UInt {
+    var sum: UInt = 0u
+    for (element in this) {
+        sum += element
+    }
+    return sum
+}
+