1 files changed, 1 insertions, 0 deletions
diff --git a/printf.h b/printf.h
index b0a2fd9..a4f92c6 100644
--- a/printf.h
+++ b/printf.h
@@ -109,6 +109,7 @@ int vprintf_(const char* format, va_list va);
  * \return The number of characters that are sent to the output function, not counting the terminating null character
  */
 int fctprintf(void (*out)(char character, void* arg), void* arg, const char* format, ...);
+int fctvprintf(void (*out)(char character, void* arg), void* arg, const char* format, va_list va);
 
 
 #ifdef __cplusplus