RNG injection for CONEX/cxroot (rmmard_())

.gitmodules

@@ -3,6 +3,6 @@
     url = ../../AirShowerPhysics/corsika-data.git
     shallow = true
 [submodule "modules/conex"]
-	path = modules/conex
+	path = modules/conex/cxroot
 	url = ../../AirShowerPhysics/cxroot.git
 	shallow = true

modules/conex/CMakeLists.txt

+add_subdirectory(cxroot)
+
+add_library(conex_random STATIC conex_random.cpp)
+target_link_libraries(conex_random PUBLIC modules_common)
+target_link_libraries(CONEXsibyll conex_random)
+
+#
+# add to combined CORSIKA8 target
+#
+add_dependencies (CORSIKA8 CONEXsibyll)
+target_link_libraries (CORSIKA8 INTERFACE CONEXsibyll)
+
+#
+# install and export
+#  
+install (
+  TARGETS CONEXsibyll conex_random
+  EXPORT CORSIKA8PublicTargets
+  ARCHIVE DESTINATION lib/corsika
+  PUBLIC_HEADER DESTINATION include/corsika_modules/conex
+  )

modules/conex/conex_random.cpp

+#include <rng_impl.hpp>
+
+IMPLEMENT_RNG(conex)
+
+extern "C" void rmmard_(double field[], int const* N, int*) {
+  for (int i = 0; i < *N; ++i) { field[i] = draw_std_rnd(); }
+}

modules/conex/conex_random.hpp

+/*
+ * (c) Copyright 2023 CORSIKA Project, corsika-project@lists.kit.edu
+ *
+ * This software is distributed under the terms of the GNU General Public
+ * Licence version 3 (GPL Version 3). See file LICENSE for a full version of
+ * the license.
+ */
+#pragma once
+
+#include <rng_decl.hpp>
+
+DECLARE_RNG(conex)
+
+extern "C" void rmmard_(double[] field, int const* N, int*);