diff --git a/libc/stdio/local.h b/libc/stdio/local.h
index e3a40bc..a175d6f 100644
--- a/libc/stdio/local.h
+++ b/libc/stdio/local.h
@@ -93,3 +93,5 @@
 
 #define FLOCKFILE(fp)   do { if (__isthreaded) flockfile(fp); } while (0)
 #define FUNLOCKFILE(fp) do { if (__isthreaded) funlockfile(fp); } while (0)
+
+#define FLOATING_POINT