From 5b59540cf211d02294bedaf31b7f508295e45deb Mon Sep 17 00:00:00 2001
From: Terry J Myers <TerryJMyers@gmail.com>
Date: Sun, 7 Oct 2018 16:25:46 -0400
Subject: [PATCH] Update WString.h

---
 cores/esp32/WString.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cores/esp32/WString.h b/cores/esp32/WString.h
index 66d7f663009..c83184f56b7 100644
--- a/cores/esp32/WString.h
+++ b/cores/esp32/WString.h
@@ -260,6 +260,7 @@ class String
     // parsing/conversion
     long toInt(void) const;
     float toFloat(void) const;
+    double toDouble(void) const;
 
 protected:
     char *buffer;	        // the actual char array