diff --git a/src/factor_graph.rs b/src/factor_graph.rs
index d1d45c7..c10ebb4 100644
--- a/src/factor_graph.rs
+++ b/src/factor_graph.rs
@@ -224,28 +224,6 @@ impl SumFactor {
     }
 }
 
-fn v_win(t: f64, e: f64) -> f64 {
-    math::pdf(t - e) / math::cdf(t - e)
-}
-
-fn w_win(t: f64, e: f64) -> f64 {
-    let vwin = v_win(t, e);
-
-    vwin * (vwin + t - e)
-}
-
-fn v_draw(t: f64, e: f64) -> f64 {
-    (math::pdf(-e - t) - math::pdf(e - t)) / (math::cdf(e - t) - math::cdf(-e - t))
-}
-
-fn w_draw(t: f64, e: f64) -> f64 {
-    let vdraw = v_draw(t, e);
-    let n = (vdraw * vdraw) + ((e - t) * math::pdf(e - t) + (e + t) * math::pdf(e + t));
-    let d = math::cdf(e - t) - math::cdf(-e - t);
-
-    n / d
-}
-
 pub struct TruncateFactor {
     variable_msg: MessageId,
     variable: VariableId,
@@ -319,3 +297,25 @@ impl TruncateFactor {
         delta
     }
 }
+
+fn v_win(t: f64, e: f64) -> f64 {
+    math::pdf(t - e) / math::cdf(t - e)
+}
+
+fn w_win(t: f64, e: f64) -> f64 {
+    let vwin = v_win(t, e);
+
+    vwin * (vwin + t - e)
+}
+
+fn v_draw(t: f64, e: f64) -> f64 {
+    (math::pdf(-e - t) - math::pdf(e - t)) / (math::cdf(e - t) - math::cdf(-e - t))
+}
+
+fn w_draw(t: f64, e: f64) -> f64 {
+    let vdraw = v_draw(t, e);
+    let n = (vdraw * vdraw) + ((e - t) * math::pdf(e - t) + (e + t) * math::pdf(e + t));
+    let d = math::cdf(e - t) - math::cdf(-e - t);
+
+    n / d
+}