5 files changed, 39 insertions, 12 deletions
diff --git a/c++/collide_and_stream.h b/c++/collide_and_stream.h
deleted file mode 100644
index 5cbb551..0000000
--- a/c++/collide_and_stream.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#pragma once
-
-namespace kel {
-namespace lbm {
-}
-}
diff --git a/c++/converter.h b/c++/converter.hpp
index bc307f5..bc307f5 100644
--- a/c++/converter.h
+++ b/c++/converter.hpp
diff --git a/c++/equilibrium.hpp b/c++/equilibrium.hpp
new file mode 100644
index 0000000..8342ed4
--- /dev/null
+++ b/c++/equilibrium.hpp
@@ -0,0 +1,39 @@
+#pragma once
+
+#include "descriptor.hpp"
+
+namespace kel {
+namespace lbm {
+template<typename T, typename Descriptor>
+saw::data<sch::FixedArray<T, Descriptor::Q>> equilibrium(saw::data<sch::T> rho, saw::data<sch::FixedArray<T,Descriptor::D>> vel){
+	using dfi = df_info<T, Descriptor>;
+
+	saw::data<sch::FixedArray<T,Descriptor::Q>> eq;
+	saw::data<T> vel_vel{};
+	for(uint64_t j = 0u; j < Descriptor::D; ++j){
+		vel_vel = vel_vel + vel.at(j) * vel.at(j);
+	}
+
+	for(uint64_t i = 0u; i < eq.get_dim_size<0u>(); ++i){
+		saw::data<T> vel_c{};
+		for(uint64_t j = 0u; j < Descriptor::D; ++j){
+			vel_c = vel_c + (vel.at(j) * {dfi::directions[i][j]});
+		}
+
+		auto vel_c_cs2 = vel_c * {dfi::inv_cs2};
+
+		eq.at(i).set(
+			dfi::weights[i] * rho.get() * 
+			(
+			 1.0
+			 + vel_c_cs2
+			 - dfi::inv_cs2 * 0.5 * vel_vel.get()
+			 + vel_c_cs2 * vel_c_cs2 * 0.5
+			)
+		);
+
+		return eq;
+	}
+}
+}
+}
diff --git a/c++/geometry.h b/c++/geometry.h
deleted file mode 100644
index 5cbb551..0000000
--- a/c++/geometry.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#pragma once
-
-namespace kel {
-namespace lbm {
-}
-}
diff --git a/c++/lbm_unit.h b/c++/lbm_unit.hpp
index c4d09f6..c4d09f6 100644
--- a/c++/lbm_unit.h
+++ b/c++/lbm_unit.hpp