From 4d94757e1513579964c7baf279adb100f9312fdc Mon Sep 17 00:00:00 2001
From: zakalibit <2941615+zakalibit@users.noreply.github.com>
Date: Sat, 1 Sep 2018 11:14:31 +0100
Subject: [PATCH] Fix compiler warning.

It works with signed and unsigned  integers.
---
 include/nlohmann/detail/output/serializer.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/nlohmann/detail/output/serializer.hpp b/include/nlohmann/detail/output/serializer.hpp
index de3676ac59..4c4e662f1f 100644
--- a/include/nlohmann/detail/output/serializer.hpp
+++ b/include/nlohmann/detail/output/serializer.hpp
@@ -442,7 +442,7 @@ class serializer
             return;
         }
 
-        const bool is_negative = (x <= 0) and (x != 0);  // see issue #755
+        const bool is_negative = !(x>=0);  // see issue #755
         std::size_t i = 0;
 
         while (x != 0)