include node_modules so release .zip is deployable

node_modules/tstl/numeric/special_math/zeta.js

@@ -0,0 +1,50 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.riemann_zeta = void 0;
+//================================================================
+/**
+ * @packageDocumentation
+ * @module std
+ */
+//================================================================
+var MathUtil_1 = require("../../internal/numeric/MathUtil");
+var gamma_1 = require("./gamma");
+/**
+ * Riemann zeta function.
+ *
+ * @reference http://en.cppreference.com/w/cpp/numeric/special_math/riemann_zeta
+ */
+function riemann_zeta(arg) {
+    if (arg < 0)
+        return _Negative(arg);
+    else if (arg === 0)
+        return -0.5;
+    else if (arg < 1)
+        return _Fractional(arg);
+    else if (arg === 1)
+        return Infinity;
+    else
+        return _Positive(arg);
+}
+exports.riemann_zeta = riemann_zeta;
+function _Negative(arg) {
+    return (Math.pow(2, arg) *
+        Math.pow(Math.PI, arg - 1) *
+        Math.sin((Math.PI * arg) / 2) *
+        (0, gamma_1.tgamma)(1 - arg) *
+        riemann_zeta(1 - arg));
+}
+function _Fractional(arg) {
+    var divider = 1 - Math.pow(2, 1 - arg);
+    var sigma = MathUtil_1.MathUtil.sigma(function (n) {
+        return Math.pow(-1, n - 1) * Math.pow(n, -arg);
+    }, 1, INFINITY);
+    return sigma / divider;
+}
+function _Positive(arg) {
+    return MathUtil_1.MathUtil.sigma(function (n) {
+        return Math.pow(n, -arg);
+    }, 1, INFINITY);
+}
+var INFINITY = 100 * 1000;
+//# sourceMappingURL=zeta.js.map