1 files changed, 28 insertions, 0 deletions
diff --git a/include/lib/ArduinoJson/TypeTraits/IsSignedIntegral.hpp b/include/lib/ArduinoJson/TypeTraits/IsSignedIntegral.hpp
new file mode 100644
index 0000000..7334eb9
--- /dev/null
+++ b/include/lib/ArduinoJson/TypeTraits/IsSignedIntegral.hpp
@@ -0,0 +1,28 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include "../Configuration.hpp"
+#include "IsSame.hpp"
+
+namespace ArduinoJson {
+namespace Internals {
+
+// A meta-function that returns true if T is an integral type.
+template <typename T>
+struct IsSignedIntegral {
+  static const bool value =
+      IsSame<T, signed char>::value || IsSame<T, signed short>::value ||
+      IsSame<T, signed int>::value || IsSame<T, signed long>::value ||
+#if ARDUINOJSON_USE_LONG_LONG
+      IsSame<T, signed long long>::value ||
+#endif
+#if ARDUINOJSON_USE_INT64
+      IsSame<T, signed __int64>::value ||
+#endif
+      false;
+};
+}
+}