feat(bitwise): Function to check if a number is positive (#204)

src/algorithms/math/bits/isPositive.js

@@ -0,0 +1,13 @@
+/**
+ * @param {number} number
+ * @return {boolean}
+ */
+export default function isPositive(number) {
+  // Zero is neither a positive nor a negative number
+  if (number === 0) {
+    return false;
+  }
+
+  // The most signification bit can be used to determine whether .
+  return ((number >> 31) & 1) === 0;
+}