From 22f1fa0c9941d1b9ed8b62872b886d26d3ab1875 Mon Sep 17 00:00:00 2001
From: Pierre Lindenbaum <33838+lindenb@users.noreply.github.com>
Date: Wed, 26 Jan 2022 14:26:24 +0100
Subject: [PATCH] Update SkatO.cpp

possible fixe for https://github.com/zhanxw/rvtests/issues/133
---
 regression/SkatO.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/regression/SkatO.cpp b/regression/SkatO.cpp
index d6c64d6..95e0463 100644
--- a/regression/SkatO.cpp
+++ b/regression/SkatO.cpp
@@ -312,7 +312,8 @@ class SkatO::SkatOImpl {
       }
     }
     double temp;
-    if (kappa > lambda.sum() * 10000) {
+    /** VarQ <= 0.0 : fixes: https://github.com/zhanxw/rvtests/issues/133 */
+    if (kappa > lambda.sum() * 10000 || VarQ <= 0.0) {
       temp = 0.0;
     } else {
       double Q = (kappa - MuQ) * sqrt(VarQ - VarZeta) / sqrt(VarQ) + MuQ;