From 7f1074291ce40f69c0d6f613892b0460d692ab72 Mon Sep 17 00:00:00 2001
From: Kai Bao <kai.bao@sintef.no>
Date: Thu, 21 May 2026 23:41:59 +0200
Subject: [PATCH 1/3] converting std::vector<double> to std::vector<float>

for BIC coefficients in GenericOilGasWaterFluidSystem
---
 opm/material/fluidsystems/GenericOilGasWaterFluidSystem.hpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/opm/material/fluidsystems/GenericOilGasWaterFluidSystem.hpp b/opm/material/fluidsystems/GenericOilGasWaterFluidSystem.hpp
index 7139cd5cb01..9b541e2dd5c 100644
--- a/opm/material/fluidsystems/GenericOilGasWaterFluidSystem.hpp
+++ b/opm/material/fluidsystems/GenericOilGasWaterFluidSystem.hpp
@@ -157,7 +157,8 @@ namespace Opm {
                                                    critic_volume[c] * 1.e3, acentric_factor[c]});
             }
             FluidSystem::printComponentParams();
-            interaction_coefficients_ = comp_config.binaryInteractionCoefficient(0);
+            const auto& bic = comp_config.binaryInteractionCoefficient(0);
+            interaction_coefficients_.assign(bic.begin(), bic.end());
 
             // Init. water pvt from deck
             waterPvt_->initFromState(eclState, schedule);

From 577ae55fba91249c0713d31dd2ca40c9b92c9fb2 Mon Sep 17 00:00:00 2001
From: Kai Bao <kai.bao@sintef.no>
Date: Wed, 27 May 2026 09:37:36 +0200
Subject: [PATCH 2/3] removing the unhelpful
 FluidSystem::printComponentParams()

---
 opm/material/fluidsystems/GenericOilGasWaterFluidSystem.hpp | 1 -
 1 file changed, 1 deletion(-)

diff --git a/opm/material/fluidsystems/GenericOilGasWaterFluidSystem.hpp b/opm/material/fluidsystems/GenericOilGasWaterFluidSystem.hpp
index 9b541e2dd5c..19ce09e3ec1 100644
--- a/opm/material/fluidsystems/GenericOilGasWaterFluidSystem.hpp
+++ b/opm/material/fluidsystems/GenericOilGasWaterFluidSystem.hpp
@@ -156,7 +156,6 @@ namespace Opm {
                 FluidSystem::addComponent(CompParm{names[c], molar_weight[c], critic_temp[c], critic_pressure[c],
                                                    critic_volume[c] * 1.e3, acentric_factor[c]});
             }
-            FluidSystem::printComponentParams();
             const auto& bic = comp_config.binaryInteractionCoefficient(0);
             interaction_coefficients_.assign(bic.begin(), bic.end());
 

From 2ffc30f0e46c1827333636d76c1ff93d0c020966 Mon Sep 17 00:00:00 2001
From: Kai Bao <kai.bao@sintef.no>
Date: Wed, 3 Jun 2026 15:32:34 +0200
Subject: [PATCH 3/3] addressing reviewing comments.

---
 .../fluidsystems/GenericOilGasWaterFluidSystem.hpp     | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/opm/material/fluidsystems/GenericOilGasWaterFluidSystem.hpp b/opm/material/fluidsystems/GenericOilGasWaterFluidSystem.hpp
index 19ce09e3ec1..dd21b216a7f 100644
--- a/opm/material/fluidsystems/GenericOilGasWaterFluidSystem.hpp
+++ b/opm/material/fluidsystems/GenericOilGasWaterFluidSystem.hpp
@@ -37,10 +37,12 @@
 #include <opm/material/fluidsystems/PTFlashParameterCache.hpp> // TODO: this is something else need to check
 #include <opm/material/viscositymodels/LBC.hpp>
 
+#include <algorithm>
 #include <cassert>
 #include <cstddef>
 #include <string>
 #include <string_view>
+#include <type_traits>
 
 #include <fmt/format.h>
 
@@ -156,8 +158,14 @@ namespace Opm {
                 FluidSystem::addComponent(CompParm{names[c], molar_weight[c], critic_temp[c], critic_pressure[c],
                                                    critic_volume[c] * 1.e3, acentric_factor[c]});
             }
+
             const auto& bic = comp_config.binaryInteractionCoefficient(0);
-            interaction_coefficients_.assign(bic.begin(), bic.end());
+            if constexpr (std::is_same_v<Scalar, double>) {
+                interaction_coefficients_ = bic;
+            } else {
+                interaction_coefficients_.resize(bic.size());
+                std::ranges::copy(bic, interaction_coefficients_.begin());
+            }
 
             // Init. water pvt from deck
             waterPvt_->initFromState(eclState, schedule);