feat:node-modules

node_modules/mathjs/lib/esm/utils/product.js

@@ -0,0 +1,14 @@
+/** @param {number} i
+ *  @param {number} n
+ *  @returns {number} product of i to n
+ */
+export function product(i, n) {
+  if (n < i) {
+    return 1;
+  }
+  if (n === i) {
+    return n;
+  }
+  var half = n + i >> 1; // divide (n + i) by 2 and truncate to integer
+  return product(i, half) * product(half + 1, n);
+}