From f0e4ee658267c8cdfe52e343a50ead660dbe692f Mon Sep 17 00:00:00 2001
From: CismonX <admin@cismon.net>
Date: Sat, 21 Mar 2020 23:51:13 +0800
Subject: [PATCH] Add stub for `isZero`.

---
 stubs/internal/Base.php | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/stubs/internal/Base.php b/stubs/internal/Base.php
index 1862ea4..ffe6e4a 100644
--- a/stubs/internal/Base.php
+++ b/stubs/internal/Base.php
@@ -141,6 +141,16 @@ interface Base extends Countable
      */
     function isFinite();
 
+    /**
+     * Checks whether all elements of the object are zero (value <= tolerance).
+     * 
+     * For objects with complex numbers, real and imaginary part are checked separately.
+     * 
+     * @param number $tol[optional]
+     * @return bool
+     */
+    function isZero($tol);
+
     /**
      * Checks whether at least one of the elements of the object is ±infinity.
      *