From aa45adb49aa43370d501b6022de6c34fc996a207 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=A9a=20Saviot?= <lea.saviot@numworks.com>
Date: Mon, 9 Sep 2019 10:55:18 +0200
Subject: [PATCH] [apps/proba] Handle infinite xMax in exponential distribution

---
 apps/probability/distribution/exponential_distribution.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/apps/probability/distribution/exponential_distribution.cpp b/apps/probability/distribution/exponential_distribution.cpp
index 5c66f6da3..311c2e197 100644
--- a/apps/probability/distribution/exponential_distribution.cpp
+++ b/apps/probability/distribution/exponential_distribution.cpp
@@ -11,9 +11,13 @@ float ExponentialDistribution::xMin() const {
 float ExponentialDistribution::xMax() const {
   assert(m_parameter1 != 0.0f);
   float result = 5.0f/m_parameter1;
-  if (result <= 0.0f) {
+  if (result <= FLT_EPSILON) {
     result = 1.0f;
   }
+  if (std::isinf(result)) {
+    // Lower xMax. It is used for drawing so the value is not that important.
+    return 1.0f/m_parameter1;
+  }
   return result * (1.0f + k_displayRightMarginRatio);
 }