1 files changed, 17 insertions, 0 deletions
diff --git a/node_modules/es5-ext/math/log1p/shim.js b/node_modules/es5-ext/math/log1p/shim.js
new file mode 100644
index 000000000..7c6f22734
--- /dev/null
+++ b/node_modules/es5-ext/math/log1p/shim.js
@@ -0,0 +1,17 @@
+// Thanks: https://github.com/monolithed/ECMAScript-6/blob/master/ES6.js
+
+"use strict";
+
+var log = Math.log;
+
+module.exports = function (value) {
+	if (isNaN(value)) return NaN;
+	value = Number(value);
+	if (value < -1) return NaN;
+	if (value === -1) return -Infinity;
+	if (value === 0) return value;
+	if (value === Infinity) return Infinity;
+
+	if (value > -1.0e-8 && value < 1.0e-8) return value - value * value / 2;
+	return log(1 + value);
+};