super fast export(console/wip:file)

server/dragonbox/dragonbox_to_chars.h

@@ -47,8 +47,8 @@ namespace jkj::dragonbox {
                                                                          result.exponent, buffer);
                 }
                 else {
-                    std::memcpy(buffer, "0E0", 3);
-                    return buffer + 3;
+                    *buffer = '0';
+                    return buffer + 1;
                 }
             }
             else {

server/dragonbox/dragonbox_to_chars.hpp

@@ -15,6 +15,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 // KIND, either express or implied.
 
+#pragma once 
 
 #include "dragonbox_to_chars.h"
 
@@ -517,3 +518,4 @@ namespace jkj::dragonbox {
         }
     }
 }
+