options/slider: check for floating-point division by zero

It's not strictly necessary but a good practice nevertheless.

1 files changed, 5 insertions, 1 deletions

diff --git a/options/slider.cpp b/options/slider.cpp
index 9cbe373c..147496cb 100644
--- a/options/slider.cpp
+++ b/options/slider.cpp
@@ -78,8 +78,12 @@ slider_value slider_value::update_from_slider(int pos, int q_min, int q_max) con
 int slider_value::to_slider_pos(int q_min, int q_max) const
 {
     const int q_diff = q_max - q_min;
+    const double div = max() - min();
 
-    return int(std::round(((cur() - min()) * q_diff / (max() - min())) + q_min));
+    if (std::fabs(div) < 1e-4)
+        return q_min;
+    else
+        return int(std::round(((cur() - min()) * q_diff / div) + q_min));
 }
 
 } // end ns options