diff --git a/nac3artiq/demo/min_artiq.py b/nac3artiq/demo/min_artiq.py
index 354d2a2a..9adf1667 100644
--- a/nac3artiq/demo/min_artiq.py
+++ b/nac3artiq/demo/min_artiq.py
@@ -3,13 +3,20 @@ from functools import wraps
 from types import SimpleNamespace
 from numpy import int32, int64
 from typing import Generic, TypeVar
+from math import floor, ceil
 
 import nac3artiq
 
-__all__ = ["KernelInvariant", "extern", "kernel", "portable", "nac3",
-           "ms", "us", "ns",
-           "print_int32", "print_int64",
-           "Core", "TTLOut", "parallel", "sequential", "virtual"]
+
+__all__ = [
+    "KernelInvariant", "virtual",
+    "round64", "floor64", "ceil64",
+    "extern", "kernel", "portable", "nac3",
+    "ms", "us", "ns",
+    "print_int32", "print_int64",
+    "Core", "TTLOut",
+    "parallel", "sequential"
+]
 
 
 T = TypeVar('T')
@@ -21,6 +28,17 @@ class KernelInvariant(Generic[T]):
 class virtual(Generic[T]):
     pass
 
+
+def round64(x):
+    return round(x)
+
+def floor64(x):
+    return floor(x)
+
+def ceil64(x):
+    return ceil(x)
+
+
 import device_db
 core_arguments = device_db.device_db["core"]["arguments"]