Use Math.log2

src/ol/math.js

@@ -14,31 +14,6 @@ export function clamp(value, min, max) {
   return Math.min(Math.max(value, min), max);
 }
 
-/**
- * Return the base 2 logarithm of a given number. The method will use the
- * native `Math.log2` function if it is available, otherwise the base 2
- * logarithm will be calculated via the reference implementation of the
- * Mozilla developer network.
- *
- * @param {number} x X.
- * @return {number} Base 2 logarithm of x.
- */
-export const log2 = (function () {
-  // Wrapped in a iife, to save the overhead of checking for the native
-  // implementation on every invocation.
-  let log2;
-  if ('log2' in Math) {
-    // The environment supports the native Math.log2 function, use it…
-    log2 = Math.log2;
-  } else {
-    // … else, use the reference implementation of MDN:
-    log2 = function (x) {
-      return Math.log(x) * Math.LOG2E;
-    };
-  }
-  return log2;
-})();
-
 /**
  * Returns the square of the closest distance between the point (x, y) and the
  * line segment (x1, y1) to (x2, y2).