1 files changed, 26 insertions, 0 deletions

diff --git a/packages/sundials/src/helpers.h b/packages/sundials/src/helpers.h
index d574ff5..ec11355 100644
--- a/packages/sundials/src/helpers.h
+++ b/packages/sundials/src/helpers.h
@@ -1 +1,27 @@
+#if defined(SUNDIALS_EXTENDED_PRECISION)
+#define GSYM "Lg"
+#define ESYM "Le"
+#define FSYM "Lf"
+#else
+#define GSYM "g"
+#define ESYM "e"
+#define FSYM "f"
+#endif
+
+/* Check function return value...
+    opt == 0 means SUNDIALS function allocates memory so check if
+             returned NULL pointer
+    opt == 1 means SUNDIALS function returns a flag so check if
+             flag >= 0
+    opt == 2 means function allocates memory so check if returned
+             NULL pointer  
+*/
 int check_flag(void *flagvalue, const char *funcname, int opt);
+
+/* f routine to compute the ODE RHS function f(t,y). */
+int f(realtype t, N_Vector y, N_Vector ydot, void *user_data);
+
+/* Jacobian routine to compute J(t,y) = df/dy. */
+int Jac(realtype t, N_Vector y, N_Vector fy, SUNMatrix J,
+        void *user_data, N_Vector tmp1, N_Vector tmp2, N_Vector tmp3);
+