From 87bd2072e8698aa9777739cf3993fa0efd519dd4 Mon Sep 17 00:00:00 2001
From: Robert Jordens <rj@m-labs.hk>
Date: Fri, 2 Dec 2016 14:33:26 +0100
Subject: [PATCH] sawg: round to int64

---
 artiq/coredevice/sawg.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/artiq/coredevice/sawg.py b/artiq/coredevice/sawg.py
index 91062e6a6..2b4feff98 100644
--- a/artiq/coredevice/sawg.py
+++ b/artiq/coredevice/sawg.py
@@ -12,9 +12,10 @@ class Spline:
         self.core = core_device
         self.channel = channel
         self.width = width
-        self.scale = (1 << width) * scale
+        self.scale = float((int64(1) << width) * scale)
         self.time_width = time_width
-        self.time_scale = (1 << time_width) * core_device.coarse_ref_period
+        self.time_scale = float((1 << time_width) *
+                                core_device.coarse_ref_period)
 
     @portable(flags={"fast-math"})
     def to_mu(self, value: TFloat) -> TInt32: