--- /dev/null
+// Credit: https://github.com/paulmillr/es6-shim/
+
+'use strict';
+
+var pow = Math.pow;
+
+module.exports = function (bytes, ebits, fbits) {
+ // Bytes to bits
+ var bits = [], i, j, b, str,
+ bias, s, e, f;
+
+ for (i = bytes.length; i; i -= 1) {
+ b = bytes[i - 1];
+ for (j = 8; j; j -= 1) {
+ bits.push(b % 2 ? 1 : 0);
+ b = b >> 1;
+ }
+ }
+ bits.reverse();
+ str = bits.join('');
+
+ // Unpack sign, exponent, fraction
+ bias = (1 << (ebits - 1)) - 1;
+ s = parseInt(str.substring(0, 1), 2) ? -1 : 1;
+ e = parseInt(str.substring(1, 1 + ebits), 2);
+ f = parseInt(str.substring(1 + ebits), 2);
+
+ // Produce number
+ if (e === (1 << ebits) - 1) return f !== 0 ? NaN : s * Infinity;
+ if (e > 0) return s * pow(2, e - bias) * (1 + f / pow(2, fbits));
+ if (f !== 0) return s * pow(2, -(bias - 1)) * (f / pow(2, fbits));
+ return s < 0 ? -0 : 0;
+};