Add first-order WaveToy. Use makefile to run Kranc

13 files changed, 1607 insertions, 0 deletions

diff --git a/MLFO_WaveToy/configuration.ccl b/MLFO_WaveToy/configuration.ccl
new file mode 100644
index 0000000..0374af4
--- /dev/null
+++ b/MLFO_WaveToy/configuration.ccl
@@ -0,0 +1,6 @@
+# File produced by user eschnett
+# Produced with Mathematica Version 6.0 for Mac OS X x86 (32-bit) (April 20, 2007)
+
+# Mathematica script written by Ian Hinder and Sascha Husa
+
+REQUIRES LoopControl
diff --git a/MLFO_WaveToy/interface.ccl b/MLFO_WaveToy/interface.ccl
new file mode 100644
index 0000000..4862d5f
--- /dev/null
+++ b/MLFO_WaveToy/interface.ccl
@@ -0,0 +1,79 @@
+# File produced by user eschnett
+# Produced with Mathematica Version 6.0 for Mac OS X x86 (32-bit) (April 20, 2007)
+
+# Mathematica script written by Ian Hinder and Sascha Husa
+
+implements: MLFO_WaveToy
+
+inherits:   Grid GenericFD Boundary
+
+
+
+USES INCLUDE: GenericFD.h
+USES INCLUDE: Symmetry.h
+USES INCLUDE: sbp_calc_coeffs.h
+USES INCLUDE: Boundary.h
+USES INCLUDE: loopcontrol.h
+
+CCTK_INT FUNCTION MoLRegisterEvolved(CCTK_INT IN EvolvedIndex, CCTK_INT IN RHSIndex)
+USES FUNCTION MoLRegisterEvolved
+
+CCTK_INT FUNCTION MoLRegisterConstrained(CCTK_INT IN ConstrainedIndex)
+USES FUNCTION MoLRegisterConstrained
+
+SUBROUTINE Diff_coeff(CCTK_POINTER_TO_CONST IN cctkGH, CCTK_INT IN dir, CCTK_INT IN nsize, CCTK_INT OUT ARRAY imin, CCTK_INT OUT ARRAY imax, CCTK_REAL OUT ARRAY q, CCTK_INT IN table_handle)
+USES FUNCTION Diff_coeff
+
+CCTK_INT FUNCTION Boundary_SelectGroupForBC(CCTK_POINTER_TO_CONST IN GH, CCTK_INT IN faces, CCTK_INT IN boundary_width, CCTK_INT IN table_handle, CCTK_STRING IN group_name, CCTK_STRING IN bc_name)
+USES FUNCTION Boundary_SelectGroupForBC
+
+CCTK_INT FUNCTION Boundary_SelectVarForBC(CCTK_POINTER_TO_CONST IN GH, CCTK_INT IN faces, CCTK_INT IN boundary_width, CCTK_INT IN table_handle, CCTK_STRING IN var_name, CCTK_STRING IN bc_name)
+USES FUNCTION Boundary_SelectVarForBC
+
+public:
+CCTK_REAL WT_w type=GF timelevels=1 tags='tensortypealias="U" tensorweight=1.0000000000000000000'
+{
+  w1,
+  w2,
+  w3
+} "WT_w"
+
+public:
+CCTK_REAL WT_rhorhs type=GF timelevels=1 tags='tensortypealias="Scalar" tensorweight=1.0000000000000000000'
+{
+  rhorhs
+} "WT_rhorhs"
+
+public:
+CCTK_REAL WT_urhs type=GF timelevels=1 tags='tensortypealias="Scalar" tensorweight=1.0000000000000000000'
+{
+  urhs
+} "WT_urhs"
+
+public:
+CCTK_REAL WT_vrhs type=GF timelevels=1 tags='tensortypealias="D" tensorweight=1.0000000000000000000'
+{
+  v1rhs,
+  v2rhs,
+  v3rhs
+} "WT_vrhs"
+
+public:
+CCTK_REAL WT_rho type=GF timelevels=3 tags='tensortypealias="Scalar" tensorweight=1.0000000000000000000'
+{
+  rho
+} "WT_rho"
+
+public:
+CCTK_REAL WT_u type=GF timelevels=3 tags='tensortypealias="Scalar" tensorweight=1.0000000000000000000'
+{
+  u
+} "WT_u"
+
+public:
+CCTK_REAL WT_v type=GF timelevels=3 tags='tensortypealias="D" tensorweight=1.0000000000000000000'
+{
+  v1,
+  v2,
+  v3
+} "WT_v"
diff --git a/MLFO_WaveToy/param.ccl b/MLFO_WaveToy/param.ccl
new file mode 100644
index 0000000..9ec50d5
--- /dev/null
+++ b/MLFO_WaveToy/param.ccl
@@ -0,0 +1,314 @@
+# File produced by user eschnett
+# Produced with Mathematica Version 6.0 for Mac OS X x86 (32-bit) (April 20, 2007)
+
+# Mathematica script written by Ian Hinder and Sascha Husa
+
+
+shares: GenericFD
+
+USES CCTK_INT stencil_width
+USES CCTK_INT stencil_width_x
+USES CCTK_INT stencil_width_y
+USES CCTK_INT stencil_width_z
+USES CCTK_INT boundary_width
+
+
+shares: MethodOfLines
+
+USES CCTK_INT MoL_Num_Evolved_Vars
+USES CCTK_INT MoL_Num_Constrained_Vars
+
+restricted:
+CCTK_REAL verbose "verbose"
+{
+  "*:*" :: "no restrictions"
+} 0
+
+restricted:
+CCTK_INT MLFO_WaveToy_MaxNumEvolvedVars "Number of evolved variables used by this thorn" ACCUMULATOR-BASE=MethodofLines::MoL_Num_Evolved_Vars
+{
+  5:5 :: "Number of evolved variables used by this thorn"
+} 5
+
+restricted:
+CCTK_INT MLFO_WaveToy_MaxNumConstrainedVars "Number of constrained variables used by this thorn" ACCUMULATOR-BASE=MethodofLines::MoL_Num_Constrained_Vars
+{
+  61:61 :: "Number of constrained variables used by this thorn"
+} 61
+
+restricted:
+CCTK_INT WTFO_Gaussian_calc_every "WTFO_Gaussian_calc_every"
+{
+  *:* :: "no restrictions"
+} 1
+
+restricted:
+CCTK_INT WTFO_RHS_calc_every "WTFO_RHS_calc_every"
+{
+  *:* :: "no restrictions"
+} 1
+
+restricted:
+CCTK_INT WTFO_constraints_calc_every "WTFO_constraints_calc_every"
+{
+  *:* :: "no restrictions"
+} 1
+
+restricted:
+CCTK_INT WTFO_Gaussian_calc_offset "WTFO_Gaussian_calc_offset"
+{
+  *:* :: "no restrictions"
+} 0
+
+restricted:
+CCTK_INT WTFO_RHS_calc_offset "WTFO_RHS_calc_offset"
+{
+  *:* :: "no restrictions"
+} 0
+
+restricted:
+CCTK_INT WTFO_constraints_calc_offset "WTFO_constraints_calc_offset"
+{
+  *:* :: "no restrictions"
+} 0
+
+private:
+KEYWORD rho_bound "Boundary condition to implement"
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+KEYWORD u_bound "Boundary condition to implement"
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+KEYWORD v1_bound "Boundary condition to implement"
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+KEYWORD v2_bound "Boundary condition to implement"
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+KEYWORD v3_bound "Boundary condition to implement"
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+KEYWORD WT_rho_bound "Boundary condition to implement"
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+KEYWORD WT_u_bound "Boundary condition to implement"
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+KEYWORD WT_v_bound "Boundary condition to implement"
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+CCTK_REAL rho_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL u_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL v1_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL v2_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL v3_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL WT_rho_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL WT_u_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL WT_v_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL rho_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL u_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL v1_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL v2_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL v3_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_rho_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_u_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_v_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL rho_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL u_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL v1_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL v2_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL v3_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_rho_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_u_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_v_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
diff --git a/MLFO_WaveToy/schedule.ccl b/MLFO_WaveToy/schedule.ccl
new file mode 100644
index 0000000..99d73ae
--- /dev/null
+++ b/MLFO_WaveToy/schedule.ccl
@@ -0,0 +1,86 @@
+# File produced by user eschnett
+# Produced with Mathematica Version 6.0 for Mac OS X x86 (32-bit) (April 20, 2007)
+
+# Mathematica script written by Ian Hinder and Sascha Husa
+
+
+STORAGE: WT_w[1]
+
+STORAGE: WT_rhorhs[1]
+
+STORAGE: WT_urhs[1]
+
+STORAGE: WT_vrhs[1]
+
+STORAGE: WT_rho[3]
+
+STORAGE: WT_u[3]
+
+STORAGE: WT_v[3]
+
+schedule MLFO_WaveToy_Startup at STARTUP
+{
+  LANG: C
+  OPTIONS: meta
+} "create banner"
+
+schedule MLFO_WaveToy_RegisterVars in MoL_Register
+{
+  LANG: C
+  OPTIONS: meta
+} "Register Variables for MoL"
+
+schedule MLFO_WaveToy_RegisterSymmetries at BASEGRID
+{
+  LANG: C
+  OPTIONS: meta
+} "register symmetries"
+
+schedule WTFO_Gaussian AT initial
+{
+  LANG: C
+  
+} "WTFO_Gaussian"
+
+schedule WTFO_RHS IN MoL_CalcRHS
+{
+  LANG: C
+  
+} "WTFO_RHS"
+
+schedule WTFO_RHS AT analysis
+{
+  LANG: C
+  
+  SYNC: WT_rhorhs
+  SYNC: WT_urhs
+  SYNC: WT_vrhs
+} "WTFO_RHS"
+
+schedule WTFO_constraints AT analysis
+{
+  LANG: C
+  
+  SYNC: WT_w
+} "WTFO_constraints"
+
+schedule MLFO_WaveToy_ApplyBoundConds in MoL_PostStep
+{
+  LANG: C
+  OPTIONS: level
+  SYNC: WT_rho
+  SYNC: WT_u
+  SYNC: WT_v
+} "apply boundary conditions"
+
+schedule MLFO_WaveToy_CheckBoundaries at BASEGRID
+{
+  LANG: C
+  OPTIONS: meta
+} "check boundaries treatment"
+
+schedule group ApplyBCs as MLFO_WaveToy_ApplyBCs in MoL_PostStep  after MLFO_WaveToy_ApplyBoundConds
+{
+  # no language specified
+  
+} "Apply boundary conditions controlled by thorn Boundary"
diff --git a/MLFO_WaveToy/src/Boundaries.c b/MLFO_WaveToy/src/Boundaries.c
new file mode 100644
index 0000000..abc7ce9
--- /dev/null
+++ b/MLFO_WaveToy/src/Boundaries.c
@@ -0,0 +1,444 @@
+/*  File produced by user eschnett */
+/*  Produced with Mathematica Version 6.0 for Mac OS X x86 (32-bit) (April 20, 2007) */
+
+/*  Mathematica script written by Ian Hinder and Sascha Husa */
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "cctk_Faces.h"
+#include "util_Table.h"
+#include "Symmetry.h"
+
+
+/* the boundary treatment is split into 3 steps:    */
+/* 1. excision                                      */
+/* 2. symmetries                                    */
+/* 3. "other" boundary conditions, e.g. radiative */
+
+/* to simplify scheduling and testing, the 3 steps  */
+/* are currently applied in separate functions      */
+
+
+void MLFO_WaveToy_CheckBoundaries(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_PARAMETERS
+  
+  return;
+}
+
+void MLFO_WaveToy_ApplyBoundConds(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_PARAMETERS
+  
+  CCTK_INT ierr = 0;
+  
+  if (CCTK_EQUALS(WT_rho_bound, "none"  ) ||
+      CCTK_EQUALS(WT_rho_bound, "static") ||
+      CCTK_EQUALS(WT_rho_bound, "flat"  ) ||
+      CCTK_EQUALS(WT_rho_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "MLFO_WaveToy::WT_rho", WT_rho_bound);
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register WT_rho_bound BC for MLFO_WaveToy::WT_rho!");
+  }
+  
+  if (CCTK_EQUALS(WT_u_bound, "none"  ) ||
+      CCTK_EQUALS(WT_u_bound, "static") ||
+      CCTK_EQUALS(WT_u_bound, "flat"  ) ||
+      CCTK_EQUALS(WT_u_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "MLFO_WaveToy::WT_u", WT_u_bound);
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register WT_u_bound BC for MLFO_WaveToy::WT_u!");
+  }
+  
+  if (CCTK_EQUALS(WT_v_bound, "none"  ) ||
+      CCTK_EQUALS(WT_v_bound, "static") ||
+      CCTK_EQUALS(WT_v_bound, "flat"  ) ||
+      CCTK_EQUALS(WT_v_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "MLFO_WaveToy::WT_v", WT_v_bound);
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register WT_v_bound BC for MLFO_WaveToy::WT_v!");
+  }
+  
+  if (CCTK_EQUALS(rho_bound, "none"  ) ||
+      CCTK_EQUALS(rho_bound, "static") ||
+      CCTK_EQUALS(rho_bound, "flat"  ) ||
+      CCTK_EQUALS(rho_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "MLFO_WaveToy::rho", rho_bound);
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register rho_bound BC for MLFO_WaveToy::rho!");
+  }
+  
+  if (CCTK_EQUALS(u_bound, "none"  ) ||
+      CCTK_EQUALS(u_bound, "static") ||
+      CCTK_EQUALS(u_bound, "flat"  ) ||
+      CCTK_EQUALS(u_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "MLFO_WaveToy::u", u_bound);
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register u_bound BC for MLFO_WaveToy::u!");
+  }
+  
+  if (CCTK_EQUALS(v1_bound, "none"  ) ||
+      CCTK_EQUALS(v1_bound, "static") ||
+      CCTK_EQUALS(v1_bound, "flat"  ) ||
+      CCTK_EQUALS(v1_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "MLFO_WaveToy::v1", v1_bound);
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register v1_bound BC for MLFO_WaveToy::v1!");
+  }
+  
+  if (CCTK_EQUALS(v2_bound, "none"  ) ||
+      CCTK_EQUALS(v2_bound, "static") ||
+      CCTK_EQUALS(v2_bound, "flat"  ) ||
+      CCTK_EQUALS(v2_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "MLFO_WaveToy::v2", v2_bound);
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register v2_bound BC for MLFO_WaveToy::v2!");
+  }
+  
+  if (CCTK_EQUALS(v3_bound, "none"  ) ||
+      CCTK_EQUALS(v3_bound, "static") ||
+      CCTK_EQUALS(v3_bound, "flat"  ) ||
+      CCTK_EQUALS(v3_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "MLFO_WaveToy::v3", v3_bound);
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register v3_bound BC for MLFO_WaveToy::v3!");
+  }
+  
+  if (CCTK_EQUALS(WT_rho_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    CCTK_INT handle_WT_rho_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_rho_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_WT_rho_bound , WT_rho_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(-1, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_WT_rho_bound ,WT_rho_bound_speed, "SPEED") < 0)
+       CCTK_WARN(-1, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_rho_bound, 
+                      "MLFO_WaveToy::WT_rho", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register Radiation BC for MLFO_WaveToy::WT_rho!");
+  
+  }
+  
+  if (CCTK_EQUALS(WT_u_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    CCTK_INT handle_WT_u_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_u_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_WT_u_bound , WT_u_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(-1, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_WT_u_bound ,WT_u_bound_speed, "SPEED") < 0)
+       CCTK_WARN(-1, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_u_bound, 
+                      "MLFO_WaveToy::WT_u", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register Radiation BC for MLFO_WaveToy::WT_u!");
+  
+  }
+  
+  if (CCTK_EQUALS(WT_v_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    CCTK_INT handle_WT_v_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_v_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_WT_v_bound , WT_v_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(-1, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_WT_v_bound ,WT_v_bound_speed, "SPEED") < 0)
+       CCTK_WARN(-1, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_v_bound, 
+                      "MLFO_WaveToy::WT_v", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register Radiation BC for MLFO_WaveToy::WT_v!");
+  
+  }
+  
+  if (CCTK_EQUALS(rho_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    CCTK_INT handle_rho_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_rho_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_rho_bound , rho_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(-1, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_rho_bound ,rho_bound_speed, "SPEED") < 0)
+        CCTK_WARN(-1, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_rho_bound, 
+                      "MLFO_WaveToy::rho", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register Radiation BC for MLFO_WaveToy::rho!");
+  
+  }
+  
+  if (CCTK_EQUALS(u_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    CCTK_INT handle_u_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_u_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_u_bound , u_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(-1, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_u_bound ,u_bound_speed, "SPEED") < 0)
+        CCTK_WARN(-1, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_u_bound, 
+                      "MLFO_WaveToy::u", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register Radiation BC for MLFO_WaveToy::u!");
+  
+  }
+  
+  if (CCTK_EQUALS(v1_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    CCTK_INT handle_v1_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_v1_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_v1_bound , v1_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(-1, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_v1_bound ,v1_bound_speed, "SPEED") < 0)
+        CCTK_WARN(-1, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_v1_bound, 
+                      "MLFO_WaveToy::v1", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register Radiation BC for MLFO_WaveToy::v1!");
+  
+  }
+  
+  if (CCTK_EQUALS(v2_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    CCTK_INT handle_v2_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_v2_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_v2_bound , v2_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(-1, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_v2_bound ,v2_bound_speed, "SPEED") < 0)
+        CCTK_WARN(-1, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_v2_bound, 
+                      "MLFO_WaveToy::v2", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register Radiation BC for MLFO_WaveToy::v2!");
+  
+  }
+  
+  if (CCTK_EQUALS(v3_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    CCTK_INT handle_v3_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_v3_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_v3_bound , v3_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(-1, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_v3_bound ,v3_bound_speed, "SPEED") < 0)
+        CCTK_WARN(-1, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_v3_bound, 
+                      "MLFO_WaveToy::v3", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register Radiation BC for MLFO_WaveToy::v3!");
+  
+  }
+  
+  if (CCTK_EQUALS(WT_rho_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    CCTK_INT handle_WT_rho_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_rho_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_WT_rho_bound ,WT_rho_bound_scalar, "SCALAR") < 0)
+        CCTK_WARN(-1, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_rho_bound, 
+                      "MLFO_WaveToy::WT_rho", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register Scalar BC for MLFO_WaveToy::WT_rho!");
+  
+  }
+  
+  if (CCTK_EQUALS(WT_u_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    CCTK_INT handle_WT_u_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_u_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_WT_u_bound ,WT_u_bound_scalar, "SCALAR") < 0)
+        CCTK_WARN(-1, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_u_bound, 
+                      "MLFO_WaveToy::WT_u", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register Scalar BC for MLFO_WaveToy::WT_u!");
+  
+  }
+  
+  if (CCTK_EQUALS(WT_v_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    CCTK_INT handle_WT_v_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_v_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_WT_v_bound ,WT_v_bound_scalar, "SCALAR") < 0)
+        CCTK_WARN(-1, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_v_bound, 
+                      "MLFO_WaveToy::WT_v", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Failed to register Scalar BC for MLFO_WaveToy::WT_v!");
+  
+  }
+  
+  if (CCTK_EQUALS(rho_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    CCTK_INT handle_rho_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_rho_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_rho_bound ,rho_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(-1, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_rho_bound, 
+                      "MLFO_WaveToy::rho", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Error in registering Scalar BC for MLFO_WaveToy::rho!");
+  
+  }
+  
+  if (CCTK_EQUALS(u_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    CCTK_INT handle_u_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_u_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_u_bound ,u_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(-1, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_u_bound, 
+                      "MLFO_WaveToy::u", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Error in registering Scalar BC for MLFO_WaveToy::u!");
+  
+  }
+  
+  if (CCTK_EQUALS(v1_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    CCTK_INT handle_v1_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_v1_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_v1_bound ,v1_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(-1, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_v1_bound, 
+                      "MLFO_WaveToy::v1", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Error in registering Scalar BC for MLFO_WaveToy::v1!");
+  
+  }
+  
+  if (CCTK_EQUALS(v2_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    CCTK_INT handle_v2_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_v2_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_v2_bound ,v2_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(-1, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_v2_bound, 
+                      "MLFO_WaveToy::v2", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Error in registering Scalar BC for MLFO_WaveToy::v2!");
+  
+  }
+  
+  if (CCTK_EQUALS(v3_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    CCTK_INT handle_v3_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_v3_bound < 0) CCTK_WARN(-1, "could not create table!");
+    if (Util_TableSetReal(handle_v3_bound ,v3_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(-1, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_v3_bound, 
+                      "MLFO_WaveToy::v3", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(-1, "Error in registering Scalar BC for MLFO_WaveToy::v3!");
+  
+  }
+  return;
+}
+
+
+
+/* template for entries in parameter file:
+#$bound$#MLFO_WaveToy::WT_rho_bound       = "skip"
+#$bound$#MLFO_WaveToy::WT_rho_bound_speed = 1.0
+#$bound$#MLFO_WaveToy::WT_rho_bound_limit = 0.0
+#$bound$#MLFO_WaveToy::WT_rho_bound_scalar = 0.0
+
+#$bound$#MLFO_WaveToy::WT_u_bound       = "skip"
+#$bound$#MLFO_WaveToy::WT_u_bound_speed = 1.0
+#$bound$#MLFO_WaveToy::WT_u_bound_limit = 0.0
+#$bound$#MLFO_WaveToy::WT_u_bound_scalar = 0.0
+
+#$bound$#MLFO_WaveToy::WT_v_bound       = "skip"
+#$bound$#MLFO_WaveToy::WT_v_bound_speed = 1.0
+#$bound$#MLFO_WaveToy::WT_v_bound_limit = 0.0
+#$bound$#MLFO_WaveToy::WT_v_bound_scalar = 0.0
+
+#$bound$#MLFO_WaveToy::rho_bound       = "skip"
+#$bound$#MLFO_WaveToy::rho_bound_speed = 1.0
+#$bound$#MLFO_WaveToy::rho_bound_limit = 0.0
+#$bound$#MLFO_WaveToy::rho_bound_scalar = 0.0
+
+#$bound$#MLFO_WaveToy::u_bound       = "skip"
+#$bound$#MLFO_WaveToy::u_bound_speed = 1.0
+#$bound$#MLFO_WaveToy::u_bound_limit = 0.0
+#$bound$#MLFO_WaveToy::u_bound_scalar = 0.0
+
+#$bound$#MLFO_WaveToy::v1_bound       = "skip"
+#$bound$#MLFO_WaveToy::v1_bound_speed = 1.0
+#$bound$#MLFO_WaveToy::v1_bound_limit = 0.0
+#$bound$#MLFO_WaveToy::v1_bound_scalar = 0.0
+
+#$bound$#MLFO_WaveToy::v2_bound       = "skip"
+#$bound$#MLFO_WaveToy::v2_bound_speed = 1.0
+#$bound$#MLFO_WaveToy::v2_bound_limit = 0.0
+#$bound$#MLFO_WaveToy::v2_bound_scalar = 0.0
+
+#$bound$#MLFO_WaveToy::v3_bound       = "skip"
+#$bound$#MLFO_WaveToy::v3_bound_speed = 1.0
+#$bound$#MLFO_WaveToy::v3_bound_limit = 0.0
+#$bound$#MLFO_WaveToy::v3_bound_scalar = 0.0
+
+*/
+
diff --git a/MLFO_WaveToy/src/Differencing.h b/MLFO_WaveToy/src/Differencing.h
new file mode 100644
index 0000000..876855b
--- /dev/null
+++ b/MLFO_WaveToy/src/Differencing.h
@@ -0,0 +1,12 @@
+#define PDstandardNth1(u,i,j,k) (p1o12dx*(-8*u[CCTK_GFINDEX3D(cctkGH,-1 + i,j,k)] + 8*u[CCTK_GFINDEX3D(cctkGH,1 + i,j,k)] + u[CCTK_GFINDEX3D(cctkGH,-2 + i,j,k)] - u[CCTK_GFINDEX3D(cctkGH,2 + i,j,k)]))
+#define PDstandardNth2(u,i,j,k) (p1o12dy*(-8*u[CCTK_GFINDEX3D(cctkGH,i,-1 + j,k)] + 8*u[CCTK_GFINDEX3D(cctkGH,i,1 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,i,-2 + j,k)] - u[CCTK_GFINDEX3D(cctkGH,i,2 + j,k)]))
+#define PDstandardNth3(u,i,j,k) (p1o12dz*(-8*u[CCTK_GFINDEX3D(cctkGH,i,j,-1 + k)] + 8*u[CCTK_GFINDEX3D(cctkGH,i,j,1 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,j,-2 + k)] - u[CCTK_GFINDEX3D(cctkGH,i,j,2 + k)]))
+#define PDstandardNth11(u,i,j,k) (pm1o12dx2*(-16*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,j,k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,j,k)]) + u[CCTK_GFINDEX3D(cctkGH,-2 + i,j,k)] + u[CCTK_GFINDEX3D(cctkGH,2 + i,j,k)] + 30*u[CCTK_GFINDEX3D(cctkGH,i,j,k)]))
+#define PDstandardNth22(u,i,j,k) (pm1o12dy2*(-16*(u[CCTK_GFINDEX3D(cctkGH,i,-1 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,i,1 + j,k)]) + u[CCTK_GFINDEX3D(cctkGH,i,-2 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,i,2 + j,k)] + 30*u[CCTK_GFINDEX3D(cctkGH,i,j,k)]))
+#define PDstandardNth33(u,i,j,k) (pm1o12dz2*(-16*(u[CCTK_GFINDEX3D(cctkGH,i,j,-1 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,j,1 + k)]) + u[CCTK_GFINDEX3D(cctkGH,i,j,-2 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,j,2 + k)] + 30*u[CCTK_GFINDEX3D(cctkGH,i,j,k)]))
+#define PDstandardNth12(u,i,j,k) (p1o144dxdy*(-64*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,1 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,-1 + j,k)]) + 64*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,-1 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,1 + j,k)]) + 8*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,2 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,-2 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,-2 + i,1 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,2 + i,-1 + j,k)]) - 8*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,-2 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,2 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,-2 + i,-1 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,2 + i,1 + j,k)]) + u[CCTK_GFINDEX3D(cctkGH,-2 + i,-2 + j,k)] - u[CCTK_GFINDEX3D(cctkGH,-2 + i,2 + j,k)] - u[CCTK_GFINDEX3D(cctkGH,2 + i,-2 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,2 + i,2 + j,k)]))
+#define PDstandardNth13(u,i,j,k) (p1o144dxdz*(-64*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,j,1 + k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,j,-1 + k)]) + 64*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,j,-1 + k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,j,1 + k)]) + 8*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,j,2 + k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,j,-2 + k)] + u[CCTK_GFINDEX3D(cctkGH,-2 + i,j,1 + k)] + u[CCTK_GFINDEX3D(cctkGH,2 + i,j,-1 + k)]) - 8*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,j,-2 + k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,j,2 + k)] + u[CCTK_GFINDEX3D(cctkGH,-2 + i,j,-1 + k)] + u[CCTK_GFINDEX3D(cctkGH,2 + i,j,1 + k)]) + u[CCTK_GFINDEX3D(cctkGH,-2 + i,j,-2 + k)] - u[CCTK_GFINDEX3D(cctkGH,-2 + i,j,2 + k)] - u[CCTK_GFINDEX3D(cctkGH,2 + i,j,-2 + k)] + u[CCTK_GFINDEX3D(cctkGH,2 + i,j,2 + k)]))
+#define PDstandardNth21(u,i,j,k) (p1o144dxdy*(-64*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,1 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,-1 + j,k)]) + 64*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,-1 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,1 + j,k)]) + 8*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,2 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,-2 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,-2 + i,1 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,2 + i,-1 + j,k)]) - 8*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,-2 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,2 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,-2 + i,-1 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,2 + i,1 + j,k)]) + u[CCTK_GFINDEX3D(cctkGH,-2 + i,-2 + j,k)] - u[CCTK_GFINDEX3D(cctkGH,-2 + i,2 + j,k)] - u[CCTK_GFINDEX3D(cctkGH,2 + i,-2 + j,k)] + u[CCTK_GFINDEX3D(cctkGH,2 + i,2 + j,k)]))
+#define PDstandardNth23(u,i,j,k) (p1o144dydz*(-64*(u[CCTK_GFINDEX3D(cctkGH,i,-1 + j,1 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,1 + j,-1 + k)]) + 64*(u[CCTK_GFINDEX3D(cctkGH,i,-1 + j,-1 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,1 + j,1 + k)]) + 8*(u[CCTK_GFINDEX3D(cctkGH,i,-1 + j,2 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,1 + j,-2 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,-2 + j,1 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,2 + j,-1 + k)]) - 8*(u[CCTK_GFINDEX3D(cctkGH,i,-1 + j,-2 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,1 + j,2 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,-2 + j,-1 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,2 + j,1 + k)]) + u[CCTK_GFINDEX3D(cctkGH,i,-2 + j,-2 + k)] - u[CCTK_GFINDEX3D(cctkGH,i,-2 + j,2 + k)] - u[CCTK_GFINDEX3D(cctkGH,i,2 + j,-2 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,2 + j,2 + k)]))
+#define PDstandardNth31(u,i,j,k) (p1o144dxdz*(-64*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,j,1 + k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,j,-1 + k)]) + 64*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,j,-1 + k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,j,1 + k)]) + 8*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,j,2 + k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,j,-2 + k)] + u[CCTK_GFINDEX3D(cctkGH,-2 + i,j,1 + k)] + u[CCTK_GFINDEX3D(cctkGH,2 + i,j,-1 + k)]) - 8*(u[CCTK_GFINDEX3D(cctkGH,-1 + i,j,-2 + k)] + u[CCTK_GFINDEX3D(cctkGH,1 + i,j,2 + k)] + u[CCTK_GFINDEX3D(cctkGH,-2 + i,j,-1 + k)] + u[CCTK_GFINDEX3D(cctkGH,2 + i,j,1 + k)]) + u[CCTK_GFINDEX3D(cctkGH,-2 + i,j,-2 + k)] - u[CCTK_GFINDEX3D(cctkGH,-2 + i,j,2 + k)] - u[CCTK_GFINDEX3D(cctkGH,2 + i,j,-2 + k)] + u[CCTK_GFINDEX3D(cctkGH,2 + i,j,2 + k)]))
+#define PDstandardNth32(u,i,j,k) (p1o144dydz*(-64*(u[CCTK_GFINDEX3D(cctkGH,i,-1 + j,1 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,1 + j,-1 + k)]) + 64*(u[CCTK_GFINDEX3D(cctkGH,i,-1 + j,-1 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,1 + j,1 + k)]) + 8*(u[CCTK_GFINDEX3D(cctkGH,i,-1 + j,2 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,1 + j,-2 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,-2 + j,1 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,2 + j,-1 + k)]) - 8*(u[CCTK_GFINDEX3D(cctkGH,i,-1 + j,-2 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,1 + j,2 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,-2 + j,-1 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,2 + j,1 + k)]) + u[CCTK_GFINDEX3D(cctkGH,i,-2 + j,-2 + k)] - u[CCTK_GFINDEX3D(cctkGH,i,-2 + j,2 + k)] - u[CCTK_GFINDEX3D(cctkGH,i,2 + j,-2 + k)] + u[CCTK_GFINDEX3D(cctkGH,i,2 + j,2 + k)]))
diff --git a/MLFO_WaveToy/src/RegisterMoL.c b/MLFO_WaveToy/src/RegisterMoL.c
new file mode 100644
index 0000000..68eeffe
--- /dev/null
+++ b/MLFO_WaveToy/src/RegisterMoL.c
@@ -0,0 +1,24 @@
+/*  File produced by user eschnett */
+/*  Produced with Mathematica Version 6.0 for Mac OS X x86 (32-bit) (April 20, 2007) */
+
+/*  Mathematica script written by Ian Hinder and Sascha Husa */
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+
+void MLFO_WaveToy_RegisterVars(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_PARAMETERS
+  
+  CCTK_INT ierr = 0;
+  
+  /* Register all the evolved grid functions with MoL */
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("MLFO_WaveToy::rho"),  CCTK_VarIndex("MLFO_WaveToy::rhorhs"));
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("MLFO_WaveToy::u"),  CCTK_VarIndex("MLFO_WaveToy::urhs"));
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("MLFO_WaveToy::v1"),  CCTK_VarIndex("MLFO_WaveToy::v1rhs"));
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("MLFO_WaveToy::v2"),  CCTK_VarIndex("MLFO_WaveToy::v2rhs"));
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("MLFO_WaveToy::v3"),  CCTK_VarIndex("MLFO_WaveToy::v3rhs"));
+  return;
+}
diff --git a/MLFO_WaveToy/src/RegisterSymmetries.c b/MLFO_WaveToy/src/RegisterSymmetries.c
new file mode 100644
index 0000000..f6a619c
--- /dev/null
+++ b/MLFO_WaveToy/src/RegisterSymmetries.c
@@ -0,0 +1,62 @@
+/*  File produced by user eschnett */
+/*  Produced with Mathematica Version 6.0 for Mac OS X x86 (32-bit) (April 20, 2007) */
+
+/*  Mathematica script written by Ian Hinder and Sascha Husa */
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "Symmetry.h"
+
+void MLFO_WaveToy_RegisterSymmetries(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_PARAMETERS
+  
+  
+  /* array holding symmetry definitions */
+  CCTK_INT sym[3];
+  
+  
+  /* Register symmetries of grid functions */
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "MLFO_WaveToy::rho");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "MLFO_WaveToy::u");
+  
+  sym[0] = -1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "MLFO_WaveToy::v1");
+  
+  sym[0] = 1;
+  sym[1] = -1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "MLFO_WaveToy::v2");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = -1;
+  SetCartSymVN(cctkGH, sym, "MLFO_WaveToy::v3");
+  
+  sym[0] = -1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "MLFO_WaveToy::w1");
+  
+  sym[0] = 1;
+  sym[1] = -1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "MLFO_WaveToy::w2");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = -1;
+  SetCartSymVN(cctkGH, sym, "MLFO_WaveToy::w3");
+  
+}
diff --git a/MLFO_WaveToy/src/Startup.c b/MLFO_WaveToy/src/Startup.c
new file mode 100644
index 0000000..d630b6d
--- /dev/null
+++ b/MLFO_WaveToy/src/Startup.c
@@ -0,0 +1,13 @@
+/*  File produced by user eschnett */
+/*  Produced with Mathematica Version 6.0 for Mac OS X x86 (32-bit) (April 20, 2007) */
+
+/*  Mathematica script written by Ian Hinder and Sascha Husa */
+
+#include "cctk.h"
+
+int MLFO_WaveToy_Startup(void)
+{
+  const char * banner = "MLFO_WaveToy";
+  CCTK_RegisterBanner(banner);
+  return 0;
+}
diff --git a/MLFO_WaveToy/src/WTFO_Gaussian.c b/MLFO_WaveToy/src/WTFO_Gaussian.c
new file mode 100644
index 0000000..b638cbc
--- /dev/null
+++ b/MLFO_WaveToy/src/WTFO_Gaussian.c
@@ -0,0 +1,146 @@
+/*  File produced by user eschnett */
+/*  Produced with Mathematica Version 6.0 for Mac OS X x86 (32-bit) (April 20, 2007) */
+
+/*  Mathematica script written by Ian Hinder and Sascha Husa */
+
+#define KRANC_C
+
+#include <math.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "loopcontrol.h"
+
+/* Define macros used in calculations */
+#define INITVALUE  (42)
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+#define QAD(x) ((x) * (x) * (x) * (x))
+
+void WTFO_Gaussian_Body(cGH *cctkGH, CCTK_INT dir, CCTK_INT face, CCTK_REAL normal[3], CCTK_REAL tangentA[3], CCTK_REAL tangentB[3], CCTK_INT min[3], CCTK_INT max[3], CCTK_INT n_subblock_gfs, CCTK_REAL *subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_PARAMETERS
+  
+  
+  /* Declare finite differencing variables */
+  CCTK_REAL dx = INITVALUE, dy = INITVALUE, dz = INITVALUE;
+  CCTK_REAL dxi = INITVALUE, dyi = INITVALUE, dzi = INITVALUE;
+  CCTK_REAL khalf = INITVALUE, kthird = INITVALUE, ktwothird = INITVALUE, kfourthird = INITVALUE, keightthird = INITVALUE;
+  CCTK_REAL hdxi = INITVALUE, hdyi = INITVALUE, hdzi = INITVALUE;
+  
+  
+  /* Declare predefined quantities */
+  CCTK_REAL p1o12dx = INITVALUE;
+  CCTK_REAL p1o12dy = INITVALUE;
+  CCTK_REAL p1o12dz = INITVALUE;
+  CCTK_REAL p1o144dxdy = INITVALUE;
+  CCTK_REAL p1o144dxdz = INITVALUE;
+  CCTK_REAL p1o144dydz = INITVALUE;
+  CCTK_REAL pm1o12dx2 = INITVALUE;
+  CCTK_REAL pm1o12dy2 = INITVALUE;
+  CCTK_REAL pm1o12dz2 = INITVALUE;
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering WTFO_Gaussian_Body");
+  }
+  
+  if (cctk_iteration % WTFO_Gaussian_calc_every != WTFO_Gaussian_calc_offset)
+  {
+    return;
+  }
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  dx = CCTK_DELTA_SPACE(0);
+  dy = CCTK_DELTA_SPACE(1);
+  dz = CCTK_DELTA_SPACE(2);
+  dxi = 1.0 / dx;
+  dyi = 1.0 / dy;
+  dzi = 1.0 / dz;
+  khalf = 0.5;
+  kthird = 1/3.0;
+  ktwothird = 2.0/3.0;
+  kfourthird = 4.0/3.0;
+  keightthird = 8.0/3.0;
+  hdxi = 0.5 * dxi;
+  hdyi = 0.5 * dyi;
+  hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  p1o12dx = INV(dx)/12.;
+  p1o12dy = INV(dy)/12.;
+  p1o12dz = INV(dz)/12.;
+  p1o144dxdy = (INV(dx)*INV(dy))/144.;
+  p1o144dxdz = (INV(dx)*INV(dz))/144.;
+  p1o144dydz = (INV(dy)*INV(dz))/144.;
+  pm1o12dx2 = -pow(dx,-2)/12.;
+  pm1o12dy2 = -pow(dy,-2)/12.;
+  pm1o12dz2 = -pow(dz,-2)/12.;
+  
+  /* Loop over the grid points */
+  LC_LOOP3 (WTFO_Gaussian,
+            i,j,k, min[0],min[1],min[2], max[0],max[1],max[2],
+            cctk_lsh[0],cctk_lsh[1],cctk_lsh[2])
+  {
+    int index = INITVALUE;
+    int subblock_index = INITVALUE;
+    index = CCTK_GFINDEX3D(cctkGH,i,j,k);
+    subblock_index = i - min[0] + (max[0] - min[0]) * (j - min[1] + (max[1]-min[1]) * (k - min[2]));
+    
+    /* Declare shorthands */
+    
+    /* Declare local copies of grid functions */
+    CCTK_REAL rhoL = INITVALUE;
+    CCTK_REAL uL = INITVALUE;
+    CCTK_REAL v1L = INITVALUE, v2L = INITVALUE, v3L = INITVALUE;
+    /* Declare precomputed derivatives*/
+    
+    /* Declare derivatives */
+    
+    /* Assign local copies of grid functions */
+    
+    /* Assign local copies of subblock grid functions */
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives (new style) */
+    
+    /* Precompute derivatives (old style) */
+    
+    /* Calculate temporaries and grid functions */
+    uL  =  0;
+    
+    v1L  =  0;
+    
+    v2L  =  0;
+    
+    v3L  =  0;
+    
+    rhoL  =  0;
+    
+    
+    /* Copy local copies back to grid functions */
+    rho[index] = rhoL;
+    u[index] = uL;
+    v1[index] = v1L;
+    v2[index] = v2L;
+    v3[index] = v3L;
+    
+    /* Copy local copies back to subblock grid functions */
+  }
+  LC_ENDLOOP3 (WTFO_Gaussian);
+}
+
+void WTFO_Gaussian(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_PARAMETERS
+  
+  GenericFD_LoopOverEverything(cctkGH, &WTFO_Gaussian_Body);
+}
diff --git a/MLFO_WaveToy/src/WTFO_RHS.c b/MLFO_WaveToy/src/WTFO_RHS.c
new file mode 100644
index 0000000..58c152a
--- /dev/null
+++ b/MLFO_WaveToy/src/WTFO_RHS.c
@@ -0,0 +1,214 @@
+/*  File produced by user eschnett */
+/*  Produced with Mathematica Version 6.0 for Mac OS X x86 (32-bit) (April 20, 2007) */
+
+/*  Mathematica script written by Ian Hinder and Sascha Husa */
+
+#define KRANC_C
+
+#include <math.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "loopcontrol.h"
+
+/* Define macros used in calculations */
+#define INITVALUE  (42)
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+#define QAD(x) ((x) * (x) * (x) * (x))
+
+void WTFO_RHS_Body(cGH *cctkGH, CCTK_INT dir, CCTK_INT face, CCTK_REAL normal[3], CCTK_REAL tangentA[3], CCTK_REAL tangentB[3], CCTK_INT min[3], CCTK_INT max[3], CCTK_INT n_subblock_gfs, CCTK_REAL *subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_PARAMETERS
+  
+  
+  /* Declare finite differencing variables */
+  CCTK_REAL dx = INITVALUE, dy = INITVALUE, dz = INITVALUE;
+  CCTK_REAL dxi = INITVALUE, dyi = INITVALUE, dzi = INITVALUE;
+  CCTK_REAL khalf = INITVALUE, kthird = INITVALUE, ktwothird = INITVALUE, kfourthird = INITVALUE, keightthird = INITVALUE;
+  CCTK_REAL hdxi = INITVALUE, hdyi = INITVALUE, hdzi = INITVALUE;
+  
+  
+  /* Declare predefined quantities */
+  CCTK_REAL p1o12dx = INITVALUE;
+  CCTK_REAL p1o12dy = INITVALUE;
+  CCTK_REAL p1o12dz = INITVALUE;
+  CCTK_REAL p1o144dxdy = INITVALUE;
+  CCTK_REAL p1o144dxdz = INITVALUE;
+  CCTK_REAL p1o144dydz = INITVALUE;
+  CCTK_REAL pm1o12dx2 = INITVALUE;
+  CCTK_REAL pm1o12dy2 = INITVALUE;
+  CCTK_REAL pm1o12dz2 = INITVALUE;
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering WTFO_RHS_Body");
+  }
+  
+  if (cctk_iteration % WTFO_RHS_calc_every != WTFO_RHS_calc_offset)
+  {
+    return;
+  }
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  dx = CCTK_DELTA_SPACE(0);
+  dy = CCTK_DELTA_SPACE(1);
+  dz = CCTK_DELTA_SPACE(2);
+  dxi = 1.0 / dx;
+  dyi = 1.0 / dy;
+  dzi = 1.0 / dz;
+  khalf = 0.5;
+  kthird = 1/3.0;
+  ktwothird = 2.0/3.0;
+  kfourthird = 4.0/3.0;
+  keightthird = 8.0/3.0;
+  hdxi = 0.5 * dxi;
+  hdyi = 0.5 * dyi;
+  hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  p1o12dx = INV(dx)/12.;
+  p1o12dy = INV(dy)/12.;
+  p1o12dz = INV(dz)/12.;
+  p1o144dxdy = (INV(dx)*INV(dy))/144.;
+  p1o144dxdz = (INV(dx)*INV(dz))/144.;
+  p1o144dydz = (INV(dy)*INV(dz))/144.;
+  pm1o12dx2 = -pow(dx,-2)/12.;
+  pm1o12dy2 = -pow(dy,-2)/12.;
+  pm1o12dz2 = -pow(dz,-2)/12.;
+  
+  /* Loop over the grid points */
+  LC_LOOP3 (WTFO_RHS,
+            i,j,k, min[0],min[1],min[2], max[0],max[1],max[2],
+            cctk_lsh[0],cctk_lsh[1],cctk_lsh[2])
+  {
+    int index = INITVALUE;
+    int subblock_index = INITVALUE;
+    index = CCTK_GFINDEX3D(cctkGH,i,j,k);
+    subblock_index = i - min[0] + (max[0] - min[0]) * (j - min[1] + (max[1]-min[1]) * (k - min[2]));
+    
+    /* Declare shorthands */
+    CCTK_REAL Jinv11 = INITVALUE, Jinv12 = INITVALUE, Jinv13 = INITVALUE, Jinv21 = INITVALUE, Jinv22 = INITVALUE, Jinv23 = INITVALUE;
+    CCTK_REAL Jinv31 = INITVALUE, Jinv32 = INITVALUE, Jinv33 = INITVALUE;
+    
+    /* Declare local copies of grid functions */
+    CCTK_REAL dadxL = INITVALUE;
+    CCTK_REAL dadyL = INITVALUE;
+    CCTK_REAL dadzL = INITVALUE;
+    CCTK_REAL dbdxL = INITVALUE;
+    CCTK_REAL dbdyL = INITVALUE;
+    CCTK_REAL dbdzL = INITVALUE;
+    CCTK_REAL dcdxL = INITVALUE;
+    CCTK_REAL dcdyL = INITVALUE;
+    CCTK_REAL dcdzL = INITVALUE;
+    CCTK_REAL rhoL = INITVALUE, rhorhsL = INITVALUE;
+    CCTK_REAL urhsL = INITVALUE;
+    CCTK_REAL v1L = INITVALUE, v1rhsL = INITVALUE, v2L = INITVALUE, v2rhsL = INITVALUE, v3L = INITVALUE, v3rhsL = INITVALUE;
+    /* Declare precomputed derivatives*/
+    
+    /* Declare derivatives */
+    CCTK_REAL PDstandardNth1rho = INITVALUE;
+    CCTK_REAL PDstandardNth2rho = INITVALUE;
+    CCTK_REAL PDstandardNth3rho = INITVALUE;
+    CCTK_REAL PDstandardNth1v1 = INITVALUE;
+    CCTK_REAL PDstandardNth2v1 = INITVALUE;
+    CCTK_REAL PDstandardNth3v1 = INITVALUE;
+    CCTK_REAL PDstandardNth1v2 = INITVALUE;
+    CCTK_REAL PDstandardNth2v2 = INITVALUE;
+    CCTK_REAL PDstandardNth3v2 = INITVALUE;
+    CCTK_REAL PDstandardNth1v3 = INITVALUE;
+    CCTK_REAL PDstandardNth2v3 = INITVALUE;
+    CCTK_REAL PDstandardNth3v3 = INITVALUE;
+    
+    /* Assign local copies of grid functions */
+    dadxL = dadx[index];
+    dadyL = dady[index];
+    dadzL = dadz[index];
+    dbdxL = dbdx[index];
+    dbdyL = dbdy[index];
+    dbdzL = dbdz[index];
+    dcdxL = dcdx[index];
+    dcdyL = dcdy[index];
+    dcdzL = dcdz[index];
+    rhoL = rho[index];
+    v1L = v1[index];
+    v2L = v2[index];
+    v3L = v3[index];
+    
+    /* Assign local copies of subblock grid functions */
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives (new style) */
+    PDstandardNth1rho = PDstandardNth1(rho, i, j, k);
+    PDstandardNth2rho = PDstandardNth2(rho, i, j, k);
+    PDstandardNth3rho = PDstandardNth3(rho, i, j, k);
+    PDstandardNth1v1 = PDstandardNth1(v1, i, j, k);
+    PDstandardNth2v1 = PDstandardNth2(v1, i, j, k);
+    PDstandardNth3v1 = PDstandardNth3(v1, i, j, k);
+    PDstandardNth1v2 = PDstandardNth1(v2, i, j, k);
+    PDstandardNth2v2 = PDstandardNth2(v2, i, j, k);
+    PDstandardNth3v2 = PDstandardNth3(v2, i, j, k);
+    PDstandardNth1v3 = PDstandardNth1(v3, i, j, k);
+    PDstandardNth2v3 = PDstandardNth2(v3, i, j, k);
+    PDstandardNth3v3 = PDstandardNth3(v3, i, j, k);
+    
+    /* Precompute derivatives (old style) */
+    
+    /* Calculate temporaries and grid functions */
+    Jinv11  =  dadxL;
+    
+    Jinv12  =  dadyL;
+    
+    Jinv13  =  dadzL;
+    
+    Jinv21  =  dbdxL;
+    
+    Jinv22  =  dbdyL;
+    
+    Jinv23  =  dbdzL;
+    
+    Jinv31  =  dcdxL;
+    
+    Jinv32  =  dcdyL;
+    
+    Jinv33  =  dcdzL;
+    
+    urhsL  =  rhoL;
+    
+    rhorhsL  =  Jinv11*PDstandardNth1v1 + Jinv12*PDstandardNth1v2 + Jinv13*PDstandardNth1v3 + Jinv21*PDstandardNth2v1 + 
+        Jinv22*PDstandardNth2v2 + Jinv23*PDstandardNth2v3 + Jinv31*PDstandardNth3v1 + Jinv32*PDstandardNth3v2 + 
+        Jinv33*PDstandardNth3v3;
+    
+    v1rhsL  =  Jinv11*PDstandardNth1rho + Jinv21*PDstandardNth2rho + Jinv31*PDstandardNth3rho;
+    
+    v2rhsL  =  Jinv12*PDstandardNth1rho + Jinv22*PDstandardNth2rho + Jinv32*PDstandardNth3rho;
+    
+    v3rhsL  =  Jinv13*PDstandardNth1rho + Jinv23*PDstandardNth2rho + Jinv33*PDstandardNth3rho;
+    
+    
+    /* Copy local copies back to grid functions */
+    rhorhs[index] = rhorhsL;
+    urhs[index] = urhsL;
+    v1rhs[index] = v1rhsL;
+    v2rhs[index] = v2rhsL;
+    v3rhs[index] = v3rhsL;
+    
+    /* Copy local copies back to subblock grid functions */
+  }
+  LC_ENDLOOP3 (WTFO_RHS);
+}
+
+void WTFO_RHS(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_PARAMETERS
+  
+  GenericFD_LoopOverInterior(cctkGH, &WTFO_RHS_Body);
+}
diff --git a/MLFO_WaveToy/src/WTFO_constraints.c b/MLFO_WaveToy/src/WTFO_constraints.c
new file mode 100644
index 0000000..3d20a99
--- /dev/null
+++ b/MLFO_WaveToy/src/WTFO_constraints.c
@@ -0,0 +1,201 @@
+/*  File produced by user eschnett */
+/*  Produced with Mathematica Version 6.0 for Mac OS X x86 (32-bit) (April 20, 2007) */
+
+/*  Mathematica script written by Ian Hinder and Sascha Husa */
+
+#define KRANC_C
+
+#include <math.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "loopcontrol.h"
+
+/* Define macros used in calculations */
+#define INITVALUE  (42)
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+#define QAD(x) ((x) * (x) * (x) * (x))
+
+void WTFO_constraints_Body(cGH *cctkGH, CCTK_INT dir, CCTK_INT face, CCTK_REAL normal[3], CCTK_REAL tangentA[3], CCTK_REAL tangentB[3], CCTK_INT min[3], CCTK_INT max[3], CCTK_INT n_subblock_gfs, CCTK_REAL *subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_PARAMETERS
+  
+  
+  /* Declare finite differencing variables */
+  CCTK_REAL dx = INITVALUE, dy = INITVALUE, dz = INITVALUE;
+  CCTK_REAL dxi = INITVALUE, dyi = INITVALUE, dzi = INITVALUE;
+  CCTK_REAL khalf = INITVALUE, kthird = INITVALUE, ktwothird = INITVALUE, kfourthird = INITVALUE, keightthird = INITVALUE;
+  CCTK_REAL hdxi = INITVALUE, hdyi = INITVALUE, hdzi = INITVALUE;
+  
+  
+  /* Declare predefined quantities */
+  CCTK_REAL p1o12dx = INITVALUE;
+  CCTK_REAL p1o12dy = INITVALUE;
+  CCTK_REAL p1o12dz = INITVALUE;
+  CCTK_REAL p1o144dxdy = INITVALUE;
+  CCTK_REAL p1o144dxdz = INITVALUE;
+  CCTK_REAL p1o144dydz = INITVALUE;
+  CCTK_REAL pm1o12dx2 = INITVALUE;
+  CCTK_REAL pm1o12dy2 = INITVALUE;
+  CCTK_REAL pm1o12dz2 = INITVALUE;
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering WTFO_constraints_Body");
+  }
+  
+  if (cctk_iteration % WTFO_constraints_calc_every != WTFO_constraints_calc_offset)
+  {
+    return;
+  }
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  dx = CCTK_DELTA_SPACE(0);
+  dy = CCTK_DELTA_SPACE(1);
+  dz = CCTK_DELTA_SPACE(2);
+  dxi = 1.0 / dx;
+  dyi = 1.0 / dy;
+  dzi = 1.0 / dz;
+  khalf = 0.5;
+  kthird = 1/3.0;
+  ktwothird = 2.0/3.0;
+  kfourthird = 4.0/3.0;
+  keightthird = 8.0/3.0;
+  hdxi = 0.5 * dxi;
+  hdyi = 0.5 * dyi;
+  hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  p1o12dx = INV(dx)/12.;
+  p1o12dy = INV(dy)/12.;
+  p1o12dz = INV(dz)/12.;
+  p1o144dxdy = (INV(dx)*INV(dy))/144.;
+  p1o144dxdz = (INV(dx)*INV(dz))/144.;
+  p1o144dydz = (INV(dy)*INV(dz))/144.;
+  pm1o12dx2 = -pow(dx,-2)/12.;
+  pm1o12dy2 = -pow(dy,-2)/12.;
+  pm1o12dz2 = -pow(dz,-2)/12.;
+  
+  /* Loop over the grid points */
+  LC_LOOP3 (WTFO_constraints,
+            i,j,k, min[0],min[1],min[2], max[0],max[1],max[2],
+            cctk_lsh[0],cctk_lsh[1],cctk_lsh[2])
+  {
+    int index = INITVALUE;
+    int subblock_index = INITVALUE;
+    index = CCTK_GFINDEX3D(cctkGH,i,j,k);
+    subblock_index = i - min[0] + (max[0] - min[0]) * (j - min[1] + (max[1]-min[1]) * (k - min[2]));
+    
+    /* Declare shorthands */
+    CCTK_REAL Jinv11 = INITVALUE, Jinv12 = INITVALUE, Jinv13 = INITVALUE, Jinv21 = INITVALUE, Jinv22 = INITVALUE, Jinv23 = INITVALUE;
+    CCTK_REAL Jinv31 = INITVALUE, Jinv32 = INITVALUE, Jinv33 = INITVALUE;
+    
+    /* Declare local copies of grid functions */
+    CCTK_REAL dadxL = INITVALUE;
+    CCTK_REAL dadyL = INITVALUE;
+    CCTK_REAL dadzL = INITVALUE;
+    CCTK_REAL dbdxL = INITVALUE;
+    CCTK_REAL dbdyL = INITVALUE;
+    CCTK_REAL dbdzL = INITVALUE;
+    CCTK_REAL dcdxL = INITVALUE;
+    CCTK_REAL dcdyL = INITVALUE;
+    CCTK_REAL dcdzL = INITVALUE;
+    CCTK_REAL v1L = INITVALUE, v2L = INITVALUE, v3L = INITVALUE;
+    CCTK_REAL w1L = INITVALUE, w2L = INITVALUE, w3L = INITVALUE;
+    /* Declare precomputed derivatives*/
+    
+    /* Declare derivatives */
+    CCTK_REAL PDstandardNth1v1 = INITVALUE;
+    CCTK_REAL PDstandardNth2v1 = INITVALUE;
+    CCTK_REAL PDstandardNth3v1 = INITVALUE;
+    CCTK_REAL PDstandardNth1v2 = INITVALUE;
+    CCTK_REAL PDstandardNth2v2 = INITVALUE;
+    CCTK_REAL PDstandardNth3v2 = INITVALUE;
+    CCTK_REAL PDstandardNth1v3 = INITVALUE;
+    CCTK_REAL PDstandardNth2v3 = INITVALUE;
+    CCTK_REAL PDstandardNth3v3 = INITVALUE;
+    
+    /* Assign local copies of grid functions */
+    dadxL = dadx[index];
+    dadyL = dady[index];
+    dadzL = dadz[index];
+    dbdxL = dbdx[index];
+    dbdyL = dbdy[index];
+    dbdzL = dbdz[index];
+    dcdxL = dcdx[index];
+    dcdyL = dcdy[index];
+    dcdzL = dcdz[index];
+    v1L = v1[index];
+    v2L = v2[index];
+    v3L = v3[index];
+    
+    /* Assign local copies of subblock grid functions */
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives (new style) */
+    PDstandardNth1v1 = PDstandardNth1(v1, i, j, k);
+    PDstandardNth2v1 = PDstandardNth2(v1, i, j, k);
+    PDstandardNth3v1 = PDstandardNth3(v1, i, j, k);
+    PDstandardNth1v2 = PDstandardNth1(v2, i, j, k);
+    PDstandardNth2v2 = PDstandardNth2(v2, i, j, k);
+    PDstandardNth3v2 = PDstandardNth3(v2, i, j, k);
+    PDstandardNth1v3 = PDstandardNth1(v3, i, j, k);
+    PDstandardNth2v3 = PDstandardNth2(v3, i, j, k);
+    PDstandardNth3v3 = PDstandardNth3(v3, i, j, k);
+    
+    /* Precompute derivatives (old style) */
+    
+    /* Calculate temporaries and grid functions */
+    Jinv11  =  dadxL;
+    
+    Jinv12  =  dadyL;
+    
+    Jinv13  =  dadzL;
+    
+    Jinv21  =  dbdxL;
+    
+    Jinv22  =  dbdyL;
+    
+    Jinv23  =  dbdzL;
+    
+    Jinv31  =  dcdxL;
+    
+    Jinv32  =  dcdyL;
+    
+    Jinv33  =  dcdzL;
+    
+    w1L  =  Jinv13*PDstandardNth1v2 - Jinv12*PDstandardNth1v3 + Jinv23*PDstandardNth2v2 - Jinv22*PDstandardNth2v3 + 
+        Jinv33*PDstandardNth3v2 - Jinv32*PDstandardNth3v3;
+    
+    w2L  =  -(Jinv13*PDstandardNth1v1) + Jinv11*PDstandardNth1v3 - Jinv23*PDstandardNth2v1 + Jinv21*PDstandardNth2v3 - 
+        Jinv33*PDstandardNth3v1 + Jinv31*PDstandardNth3v3;
+    
+    w3L  =  Jinv12*PDstandardNth1v1 - Jinv11*PDstandardNth1v2 + Jinv22*PDstandardNth2v1 - Jinv21*PDstandardNth2v2 + 
+        Jinv32*PDstandardNth3v1 - Jinv31*PDstandardNth3v2;
+    
+    
+    /* Copy local copies back to grid functions */
+    w1[index] = w1L;
+    w2[index] = w2L;
+    w3[index] = w3L;
+    
+    /* Copy local copies back to subblock grid functions */
+  }
+  LC_ENDLOOP3 (WTFO_constraints);
+}
+
+void WTFO_constraints(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_PARAMETERS
+  
+  GenericFD_LoopOverInterior(cctkGH, &WTFO_constraints_Body);
+}
diff --git a/MLFO_WaveToy/src/make.code.defn b/MLFO_WaveToy/src/make.code.defn
new file mode 100644
index 0000000..c034141
--- /dev/null
+++ b/MLFO_WaveToy/src/make.code.defn
@@ -0,0 +1,6 @@
+# File produced by user eschnett
+# Produced with Mathematica Version 6.0 for Mac OS X x86 (32-bit) (April 20, 2007)
+
+# Mathematica script written by Ian Hinder and Sascha Husa
+
+SRCS = Startup.c RegisterMoL.c RegisterSymmetries.c WTFO_Gaussian.c WTFO_RHS.c WTFO_constraints.c Boundaries.c