From 192b2383ac8ac06a9428d6e12c2003ef98625f24 Mon Sep 17 00:00:00 2001
From: Melissa Goad <mszoopers@protonmail.com>
Date: Mon, 3 Aug 2020 14:02:13 -0500
Subject: [PATCH] LibJS: The Math.ceil() of a number between -1 and 0 should be
 -0, according to the spec.

---
 Libraries/LibJS/Runtime/MathObject.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Libraries/LibJS/Runtime/MathObject.cpp b/Libraries/LibJS/Runtime/MathObject.cpp
index 830d5f4567..c166f49bad 100644
--- a/Libraries/LibJS/Runtime/MathObject.cpp
+++ b/Libraries/LibJS/Runtime/MathObject.cpp
@@ -129,6 +129,9 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::ceil)
         return {};
     if (number.is_nan())
         return js_nan();
+    auto number_double = number.as_double();
+    if (number_double < 0 && number_double > -1)
+        return Value(-0.f);
     return Value(::ceil(number.as_double()));
 }