Introduce overloads to check for T? element contained in iterable range in a constant time

#KT-18483

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

@@ -93,6 +93,39 @@ public fun CharRange.random(random: Random): Char {
     }
 }
 
+/**
+ * Returns `true` if this range contains the specified [element].
+ * 
+ * Always returns `false` if the [element] is `null`.
+ */
+@SinceKotlin("1.3")
+@kotlin.internal.InlineOnly
+public inline operator fun IntRange.contains(element: Int?): Boolean {
+    return element != null && contains(element)
+}
+
+/**
+ * Returns `true` if this range contains the specified [element].
+ * 
+ * Always returns `false` if the [element] is `null`.
+ */
+@SinceKotlin("1.3")
+@kotlin.internal.InlineOnly
+public inline operator fun LongRange.contains(element: Long?): Boolean {
+    return element != null && contains(element)
+}
+
+/**
+ * Returns `true` if this range contains the specified [element].
+ * 
+ * Always returns `false` if the [element] is `null`.
+ */
+@SinceKotlin("1.3")
+@kotlin.internal.InlineOnly
+public inline operator fun CharRange.contains(element: Char?): Boolean {
+    return element != null && contains(element)
+}
+
 /**
  * Checks if the specified [value] belongs to this range.
  */

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

@@ -72,6 +72,30 @@ public fun ULongRange.random(random: Random): ULong {
     }
 }
 
+/**
+ * Returns `true` if this range contains the specified [element].
+ * 
+ * Always returns `false` if the [element] is `null`.
+ */
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+@kotlin.internal.InlineOnly
+public inline operator fun UIntRange.contains(element: UInt?): Boolean {
+    return element != null && contains(element)
+}
+
+/**
+ * Returns `true` if this range contains the specified [element].
+ * 
+ * Always returns `false` if the [element] is `null`.
+ */
+@SinceKotlin("1.3")
+@ExperimentalUnsignedTypes
+@kotlin.internal.InlineOnly
+public inline operator fun ULongRange.contains(element: ULong?): Boolean {
+    return element != null && contains(element)
+}
+
 /**
  * Returns a progression from this value down to the specified [to] value with the step -1.
  *