1 files changed, 2 insertions, 0 deletions

diff --git a/lisp_api.h b/lisp_api.h
index 66ad231..6cc6588 100644
--- a/lisp_api.h
+++ b/lisp_api.h
@@ -61,4 +61,6 @@ typedef struct {
 
 module_export *module_init();
 
+int is_integer(double x);
+
 #endif