Add negR and negI to clean.f

src/clean.f

@@ -97,7 +97,19 @@
          "arity":1,
          "ext_fun":"_neg",
          "inline_exp":":!1: * -1"
-      },	  
+      },
+      {
+         "sapl_fun":"negR",
+         "arity":1,
+         "ext_fun":"_neg",
+         "inline_exp":":!1: * -1"
+      },
+      {
+         "sapl_fun":"negI",
+         "arity":1,
+         "ext_fun":"_neg",
+         "inline_exp":":!1: * -1"
+      },
 	  {
          "sapl_fun":"absI",
          "arity":1,