Added empty interaction functions for the EAGLE chemistry model.

src/chemistry.h

@@ -37,7 +37,7 @@
 #include "./chemistry/gear/chemistry_iact.h"
 #elif defined(CHEMISTRY_EAGLE)
 #include "./chemistry/EAGLE/chemistry.h"
-/* #include "./chemistry/EAGLE/chemistry_iact.h" */
+#include "./chemistry/EAGLE/chemistry_iact.h"
 #else
 #error "Invalid choice of chemistry function."
 #endif

src/chemistry/EAGLE/chemistry.h

@@ -50,6 +50,32 @@ chemistry_get_element_name(enum chemistry_element elem) {
   return chemistry_element_names[elem];
 }
 
+/**
+ * @brief Prepares a particle for the smooth metal calculation.
+ *
+ * Zeroes all the relevant arrays in preparation for the sums taking place in
+ * the various smooth metallicity tasks
+ *
+ * @param p The particle to act upon
+ * @param cd #chemistry_data containing chemistry informations.
+ */
+__attribute__((always_inline)) INLINE static void chemistry_init_part(
+    struct part* restrict p, const struct chemistry_data* cd) {}
+
+/**
+ * @brief Finishes the smooth metal calculation.
+ *
+ * Multiplies the smoothed metallicity and number of neighbours by the
+ * appropiate constants and add the self-contribution term.
+ *
+ * This function requires the #hydro_end_density to have been called.
+ *
+ * @param p The particle to act upon.
+ * @param cd #chemistry_data containing chemistry informations.
+ */
+__attribute__((always_inline)) INLINE static void chemistry_end_density(
+    struct part* restrict p, const struct chemistry_data* cd) {}
+
 /**
  * @brief Sets the chemistry properties of the (x-)particles to a valid start
  * state.

src/chemistry/EAGLE/chemistry_iact.h

+/*******************************************************************************
+ * This file is part of SWIFT.
+ * Copyright (c) 2018 Matthieu Schaller (matthieu.schaller@durham.ac.uk)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ ******************************************************************************/
+#ifndef SWIFT_EAGLE_CHEMISTRY_IACT_H
+#define SWIFT_EAGLE_CHEMISTRY_IACT_H
+
+/**
+ * @file EAGLE/chemistry_iact.h
+ * @brief Smooth metal interaction functions following the EAGLE model.
+ */
+
+#include "chemistry_struct.h"
+
+/**
+ * @brief Do chemistry computation after the runner_iact_density (symmetric
+ * version)
+ *
+ * @param r2 Distance squared between particles
+ * @param dx Distance between particles
+ * @param hi Smoothing length of i
+ * @param hj Smoothing length of j
+ * @param pi #part i
+ * @param pj #part j
+ * @param chem_data Chemistry informations
+ */
+__attribute__((always_inline)) INLINE static void runner_iact_chemistry(
+    float r2, float *dx, float hi, float hj, struct part *pi, struct part *pj,
+    const struct chemistry_data *chem_data) {}
+
+/**
+ * @brief Do chemistry computation after the runner_iact_density (non-symmetric
+ * version)
+ *
+ * @param r2 Distance squared between particles
+ * @param dx Distance between particles
+ * @param hi Smoothing length of i
+ * @param hj Smoothing length of j
+ * @param pi #part i
+ * @param pj #part j
+ * @param chem_data Chemistry informations
+ */
+__attribute__((always_inline)) INLINE static void runner_iact_nonsym_chemistry(
+    float r2, float *dx, float hi, float hj, struct part *pi,
+    const struct part *pj, const struct chemistry_data *chem_data) {}
+
+#endif /* SWIFT_EAGLE_CHEMISTRY_IACT_H */

src/chemistry/gear/chemistry.h

@@ -97,8 +97,7 @@ __attribute__((always_inline)) INLINE static void chemistry_init_part(
  * @brief Finishes the smooth metal calculation.
  *
  * Multiplies the smoothed metallicity and number of neighbours by the
- * appropiate constants
- * and add the self-contribution term.
+ * appropiate constants and add the self-contribution term.
  *
  * This method requires the #hydro_end_density to have been computed.
  *