Bit query and bit rotation functions for Int, Long, Short, Byte

#KT-12749

libraries/stdlib/js-v1/src/js/polyfills.js

@@ -230,6 +230,17 @@ if (typeof Math.log2 === "undefined") {
         return Math.log(x) * Math.LOG2E;
     };
 }
+if (typeof Math.clz32 === "undefined") {
+    Math.clz32 = (function(log, LN2) {
+        return function(x) {
+            var asUint = x >>> 0;
+            if (asUint === 0) {
+                return 32;
+            }
+            return 31 - (log(asUint) / LN2 | 0) | 0; // the "| 0" acts like math.floor
+        };
+    })(Math.log, Math.LN2);
+}
 
 // For HtmlUnit and PhantomJs
 if (typeof ArrayBuffer.isView === "undefined") {

libraries/stdlib/js-v1/src/kotlin/numbers_js-v1.kt

@@ -58,4 +58,9 @@ public actual fun Float.toRawBits(): Int = definedExternally
  */
 @SinceKotlin("1.2")
 @kotlin.internal.InlineOnly
-public actual inline fun Float.Companion.fromBits(bits: Int): Float = js("Kotlin").floatFromBits(bits).unsafeCast<Float>()
+public actual inline fun Float.Companion.fromBits(bits: Int): Float = js("Kotlin").floatFromBits(bits).unsafeCast<Float>()
+
+
+internal inline fun Long(low: Int, high: Int) = js("Kotlin").Long.fromBits(low, high).unsafeCast<Long>()
+internal inline val Long.low: Int get() = this.asDynamic().getLowBits().unsafeCast<Int>()
+internal inline val Long.high: Int get() = this.asDynamic().getHighBits().unsafeCast<Int>()