fix(opat): added min tolerance for epsilon in case where there are shared indeices

src/opatIO/private/opatIO.cpp

@@ -171,9 +171,13 @@ void OpatIO::LookupEpsilon() {
         for (int j = 1; j < static_cast<int>(header.numTables); j++) {
             epsilon = std::min(epsilon, std::fabs(tableIDToIndex.at(j).at(i) - tableIDToIndex.at(j-1).at(i)));
         }
+        if (epsilon < 1e-8) {
+            indexEpsilon.at(i) = 1e-8;
+        } else {
             indexEpsilon.at(i) = epsilon * 0.1;
         }
     }
+}
 
 int OpatIO::lookupTableID(std::vector<double> index) {
     std::vector<bool> IndexOkay;