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-rw-r--r--src/OldBdry.c26
-rw-r--r--src/make.code.defn1
2 files changed, 27 insertions, 0 deletions
diff --git a/src/OldBdry.c b/src/OldBdry.c
new file mode 100644
index 0000000..f4b5751
--- /dev/null
+++ b/src/OldBdry.c
@@ -0,0 +1,26 @@
+#include "cctk.h"
+#include "cctk_Arguments.h"
+
+static CCTK_REAL mol_dt;
+
+
+void MoL_OldBdry_SetDt (CCTK_ARGUMENTS)
+{
+ DECLARE_CCTK_ARGUMENTS
+
+ CCTK_REAL dt;
+ CCTK_REAL old_time;
+
+ old_time = *Original_Time - *Original_Delta_Time / cctkGH->cctk_timefac;
+
+ mol_dt = cctkGH->cctk_delta_time;
+
+ dt = cctkGH->cctk_time - old_time;
+
+ cctkGH->cctk_delta_time = dt * cctkGH->cctk_timefac;
+}
+
+void MoL_OldBdry_ResetDt (CCTK_ARGUMENTS)
+{
+ cctkGH->cctk_delta_time = mol_dt;
+}
diff --git a/src/make.code.defn b/src/make.code.defn
index 926dbbb..b2717f9 100644
--- a/src/make.code.defn
+++ b/src/make.code.defn
@@ -8,6 +8,7 @@ SRCS = ChangeType.c \
ICN.c \
IndexArrays.c \
InitialCopy.c \
+ OldBdry.c \
ParamCheck.c \
RK2.c \
RK3.c \