Wave example: Add generated thorn

17 files changed, 1912 insertions, 0 deletions

diff --git a/Examples/Wave/configuration.ccl b/Examples/Wave/configuration.ccl
new file mode 100644
index 0000000..023aac7
--- /dev/null
+++ b/Examples/Wave/configuration.ccl
@@ -0,0 +1,3 @@
+# File produced by Kranc
+
+REQUIRES GenericFD
diff --git a/Examples/Wave/interface.ccl b/Examples/Wave/interface.ccl
new file mode 100644
index 0000000..ab486ea
--- /dev/null
+++ b/Examples/Wave/interface.ccl
@@ -0,0 +1,63 @@
+# File produced by Kranc
+
+implements: Wave
+
+inherits:   Grid GenericFD Boundary
+
+
+
+USES INCLUDE: GenericFD.h
+USES INCLUDE: Symmetry.h
+USES INCLUDE: sbp_calc_coeffs.h
+USES INCLUDE: Boundary.h
+
+CCTK_INT FUNCTION MoLRegisterEvolved(CCTK_INT IN EvolvedIndex, CCTK_INT IN RHSIndex)
+USES FUNCTION MoLRegisterEvolved
+
+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 MultiPatch_GetMap(CCTK_POINTER_TO_CONST IN cctkGH)
+USES FUNCTION MultiPatch_GetMap
+
+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 errors type=GF timelevels=3 tags=''
+{
+  phiError,
+  piError
+} "errors"
+
+public:
+CCTK_REAL exact type=GF timelevels=3 tags=''
+{
+  phiExact,
+  piExact
+} "exact"
+
+public:
+CCTK_REAL norms type=GF timelevels=3 tags=''
+{
+  VL2,
+  VDP,
+  EL2
+} "norms"
+
+public:
+CCTK_REAL evolved type=GF timelevels=3 tags=''
+{
+  phi,
+  pi
+} "evolved"
+
+public:
+CCTK_REAL evolvedrhs type=GF timelevels=3 tags=''
+{
+  phirhs,
+  pirhs
+} "evolvedrhs"
diff --git a/Examples/Wave/param.ccl b/Examples/Wave/param.ccl
new file mode 100644
index 0000000..3b37c58
--- /dev/null
+++ b/Examples/Wave/param.ccl
@@ -0,0 +1,283 @@
+# File produced by Kranc
+
+
+shares: GenericFD
+
+
+
+shares: MethodOfLines
+
+USES CCTK_INT MoL_Num_Evolved_Vars
+
+restricted:
+CCTK_INT verbose "verbose" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_REAL periodicity "periodicity"
+{
+  "*:*" :: ""
+} 1
+
+restricted:
+CCTK_REAL amplitude "amplitude"
+{
+  "*:*" :: ""
+} 1
+
+restricted:
+CCTK_REAL n1 "n1"
+{
+  "*:*" :: ""
+} 1
+
+restricted:
+CCTK_REAL n2 "n2"
+{
+  "*:*" :: ""
+} 0
+
+restricted:
+CCTK_REAL n3 "n3"
+{
+  "*:*" :: ""
+} 0
+
+restricted:
+CCTK_REAL nSigma "nSigma"
+{
+  "*:*" :: ""
+} 0
+
+restricted:
+CCTK_REAL r0 "r0"
+{
+  "*:*" :: ""
+} 0
+
+restricted:
+CCTK_REAL t0 "t0"
+{
+  "*:*" :: ""
+} 0
+
+restricted:
+CCTK_REAL x0 "x0"
+{
+  "*:*" :: ""
+} 0
+
+restricted:
+CCTK_REAL hlleAlpha "hlleAlpha"
+{
+  "*:*" :: ""
+} 0
+
+private:
+KEYWORD initial_data "initial_data"
+{
+  "gaussian" :: "gaussian"
+  "sine" :: "sine"
+} "gaussian"
+
+private:
+KEYWORD boundary_condition "boundary_condition"
+{
+  "none" :: "none"
+  "radiative" :: "radiative"
+} "radiative"
+
+restricted:
+CCTK_INT Wave_MaxNumEvolvedVars "Number of evolved variables used by this thorn" ACCUMULATOR-BASE=MethodofLines::MoL_Num_Evolved_Vars STEERABLE=RECOVER
+{
+  2:2 :: "Number of evolved variables used by this thorn"
+} 2
+
+restricted:
+CCTK_INT timelevels "Number of active timelevels" STEERABLE=RECOVER
+{
+  0:3 :: ""
+} 3
+
+restricted:
+CCTK_INT rhs_timelevels "Number of active RHS timelevels" STEERABLE=RECOVER
+{
+  0:3 :: ""
+} 1
+
+restricted:
+CCTK_INT wave_exact_sine_calc_every "wave_exact_sine_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT wave_exact_gaussian_calc_every "wave_exact_gaussian_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT wave_import_exact_calc_every "wave_import_exact_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT wave_evolve_calc_every "wave_evolve_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT wave_calc_errors_calc_every "wave_calc_errors_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT wave_calc_norm_calc_every "wave_calc_norm_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT wave_boundary_calc_every "wave_boundary_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT wave_exact_sine_calc_offset "wave_exact_sine_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT wave_exact_gaussian_calc_offset "wave_exact_gaussian_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT wave_import_exact_calc_offset "wave_import_exact_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT wave_evolve_calc_offset "wave_evolve_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT wave_calc_errors_calc_offset "wave_calc_errors_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT wave_calc_norm_calc_offset "wave_calc_norm_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT wave_boundary_calc_offset "wave_boundary_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+private:
+KEYWORD phi_bound "Boundary condition to implement" STEERABLE=ALWAYS
+{
+  "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 pi_bound "Boundary condition to implement" STEERABLE=ALWAYS
+{
+  "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 evolved_bound "Boundary condition to implement" STEERABLE=ALWAYS
+{
+  "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"
+} "none"
+
+private:
+CCTK_REAL phi_bound_speed "characteristic speed at boundary" STEERABLE=ALWAYS
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL pi_bound_speed "characteristic speed at boundary" STEERABLE=ALWAYS
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL evolved_bound_speed "characteristic speed at boundary" STEERABLE=ALWAYS
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL phi_bound_limit "limit value for r -> infinity" STEERABLE=ALWAYS
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL pi_bound_limit "limit value for r -> infinity" STEERABLE=ALWAYS
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL evolved_bound_limit "limit value for r -> infinity" STEERABLE=ALWAYS
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL phi_bound_scalar "Dirichlet boundary value" STEERABLE=ALWAYS
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL pi_bound_scalar "Dirichlet boundary value" STEERABLE=ALWAYS
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL evolved_bound_scalar "Dirichlet boundary value" STEERABLE=ALWAYS
+{
+  "*:*" :: "unrestricted"
+} 0.
+
diff --git a/Examples/Wave/schedule.ccl b/Examples/Wave/schedule.ccl
new file mode 100644
index 0000000..ea09733
--- /dev/null
+++ b/Examples/Wave/schedule.ccl
@@ -0,0 +1,136 @@
+# File produced by Kranc
+
+
+STORAGE: errors[3]
+
+STORAGE: exact[3]
+
+STORAGE: norms[3]
+
+if (timelevels == 1)
+{
+  STORAGE: evolved[1]
+}
+if (timelevels == 2)
+{
+  STORAGE: evolved[2]
+}
+if (timelevels == 3)
+{
+  STORAGE: evolved[3]
+}
+
+if (rhs_timelevels == 1)
+{
+  STORAGE: evolvedrhs[1]
+}
+if (rhs_timelevels == 2)
+{
+  STORAGE: evolvedrhs[2]
+}
+if (rhs_timelevels == 3)
+{
+  STORAGE: evolvedrhs[3]
+}
+
+schedule Wave_Startup at STARTUP
+{
+  LANG: C
+  OPTIONS: meta
+} "create banner"
+
+schedule Wave_RegisterVars in MoL_Register
+{
+  LANG: C
+  OPTIONS: meta
+} "Register Variables for MoL"
+
+schedule Wave_RegisterSymmetries in SymmetryRegister
+{
+  LANG: C
+  OPTIONS: meta
+} "register symmetries"
+
+
+if (CCTK_EQUALS(initial_data, "sine"))
+{
+  schedule wave_exact_sine AT INITIAL before import_exact
+  {
+    LANG: C
+  } "wave_exact_sine"
+}
+
+
+if (CCTK_EQUALS(initial_data, "sine"))
+{
+  schedule wave_exact_sine AT POSTSTEP before calc_errors
+  {
+    LANG: C
+  } "wave_exact_sine"
+}
+
+
+if (CCTK_EQUALS(initial_data, "gaussian"))
+{
+  schedule wave_exact_gaussian AT INITIAL before import_exact
+  {
+    LANG: C
+  } "wave_exact_gaussian"
+}
+
+
+if (CCTK_EQUALS(initial_data, "gaussian"))
+{
+  schedule wave_exact_gaussian AT POSTSTEP before calc_errors
+  {
+    LANG: C
+  } "wave_exact_gaussian"
+}
+
+schedule wave_import_exact at INITIAL as import_exact
+{
+  LANG: C
+} "wave_import_exact"
+
+schedule wave_evolve in MoL_CalcRHS as evolve
+{
+  LANG: C
+} "wave_evolve"
+
+schedule wave_calc_errors at ANALYSIS as calc_errors
+{
+  LANG: C
+} "wave_calc_errors"
+
+schedule wave_calc_norm at ANALYSIS as calc_norm
+{
+  LANG: C
+  SYNC: norms
+} "wave_calc_norm"
+
+
+if (CCTK_EQUALS(boundary_condition, "radiative"))
+{
+  schedule wave_boundary in MoL_RHSBoundaries
+  {
+    LANG: C
+  } "wave_boundary"
+}
+
+schedule Wave_SelectBoundConds in MoL_PostStep
+{
+  LANG: C
+  OPTIONS: level
+  SYNC: evolved
+} "select boundary conditions"
+
+schedule Wave_CheckBoundaries at BASEGRID
+{
+  LANG: C
+  OPTIONS: meta
+} "check boundaries treatment"
+
+schedule group ApplyBCs as Wave_ApplyBCs in MoL_PostStep after Wave_SelectBoundConds
+{
+  # no language specified
+} "Apply boundary conditions controlled by thorn Boundary"
diff --git a/Examples/Wave/src/Boundaries.cc b/Examples/Wave/src/Boundaries.cc
new file mode 100644
index 0000000..672d7f3
--- /dev/null
+++ b/Examples/Wave/src/Boundaries.cc
@@ -0,0 +1,197 @@
+/*  File produced by Kranc */
+
+#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      */
+
+
+extern "C" void Wave_CheckBoundaries(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  return;
+}
+
+extern "C" void Wave_SelectBoundConds(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  
+  if (CCTK_EQUALS(evolved_bound, "none"  ) ||
+      CCTK_EQUALS(evolved_bound, "static") ||
+      CCTK_EQUALS(evolved_bound, "flat"  ) ||
+      CCTK_EQUALS(evolved_bound, "zero"  ) )
+  {
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, -1,
+                      "Wave::evolved", evolved_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register evolved_bound BC for Wave::evolved!");
+  }
+  
+  if (CCTK_EQUALS(phi_bound, "none"  ) ||
+      CCTK_EQUALS(phi_bound, "static") ||
+      CCTK_EQUALS(phi_bound, "flat"  ) ||
+      CCTK_EQUALS(phi_bound, "zero"  ) )
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1,
+                      "Wave::phi", phi_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register phi_bound BC for Wave::phi!");
+  }
+  
+  if (CCTK_EQUALS(pi_bound, "none"  ) ||
+      CCTK_EQUALS(pi_bound, "static") ||
+      CCTK_EQUALS(pi_bound, "flat"  ) ||
+      CCTK_EQUALS(pi_bound, "zero"  ) )
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1,
+                      "Wave::pi", pi_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register pi_bound BC for Wave::pi!");
+  }
+  
+  if (CCTK_EQUALS(evolved_bound, "radiative"))
+  {
+   /* select radiation boundary condition */
+    static CCTK_INT handle_evolved_bound = -1;
+    if (handle_evolved_bound < 0) handle_evolved_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_evolved_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_evolved_bound , evolved_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_evolved_bound ,evolved_bound_speed, "SPEED") < 0)
+       CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_evolved_bound, 
+                      "Wave::evolved", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for Wave::evolved!");
+  
+  }
+  
+  if (CCTK_EQUALS(phi_bound, "radiative"))
+  {
+   /* select radiation boundary condition */
+    static CCTK_INT handle_phi_bound = -1;
+    if (handle_phi_bound < 0) handle_phi_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_phi_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_phi_bound , phi_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_phi_bound ,phi_bound_speed, "SPEED") < 0)
+        CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_phi_bound, 
+                      "Wave::phi", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for Wave::phi!");
+  
+  }
+  
+  if (CCTK_EQUALS(pi_bound, "radiative"))
+  {
+   /* select radiation boundary condition */
+    static CCTK_INT handle_pi_bound = -1;
+    if (handle_pi_bound < 0) handle_pi_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_pi_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_pi_bound , pi_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_pi_bound ,pi_bound_speed, "SPEED") < 0)
+        CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_pi_bound, 
+                      "Wave::pi", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for Wave::pi!");
+  
+  }
+  
+  if (CCTK_EQUALS(evolved_bound, "scalar"))
+  {
+   /* select scalar boundary condition */
+    static CCTK_INT handle_evolved_bound = -1;
+    if (handle_evolved_bound < 0) handle_evolved_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_evolved_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_evolved_bound ,evolved_bound_scalar, "SCALAR") < 0)
+        CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_evolved_bound, 
+                      "Wave::evolved", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Scalar BC for Wave::evolved!");
+  
+  }
+  
+  if (CCTK_EQUALS(phi_bound, "scalar"))
+  {
+   /* select scalar boundary condition */
+    static CCTK_INT handle_phi_bound = -1;
+    if (handle_phi_bound < 0) handle_phi_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_phi_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_phi_bound ,phi_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_phi_bound, 
+                      "Wave::phi", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Error in registering Scalar BC for Wave::phi!");
+  
+  }
+  
+  if (CCTK_EQUALS(pi_bound, "scalar"))
+  {
+   /* select scalar boundary condition */
+    static CCTK_INT handle_pi_bound = -1;
+    if (handle_pi_bound < 0) handle_pi_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_pi_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_pi_bound ,pi_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_pi_bound, 
+                      "Wave::pi", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Error in registering Scalar BC for Wave::pi!");
+  
+  }
+  return;
+}
+
+
+
+/* template for entries in parameter file:
+#$bound$#Wave::evolved_bound       = "skip"
+#$bound$#Wave::evolved_bound_speed = 1.0
+#$bound$#Wave::evolved_bound_limit = 0.0
+#$bound$#Wave::evolved_bound_scalar = 0.0
+
+#$bound$#Wave::phi_bound       = "skip"
+#$bound$#Wave::phi_bound_speed = 1.0
+#$bound$#Wave::phi_bound_limit = 0.0
+#$bound$#Wave::phi_bound_scalar = 0.0
+
+#$bound$#Wave::pi_bound       = "skip"
+#$bound$#Wave::pi_bound_speed = 1.0
+#$bound$#Wave::pi_bound_limit = 0.0
+#$bound$#Wave::pi_bound_scalar = 0.0
+
+*/
+
diff --git a/Examples/Wave/src/Differencing.h b/Examples/Wave/src/Differencing.h
new file mode 100644
index 0000000..e7810c7
--- /dev/null
+++ b/Examples/Wave/src/Differencing.h
@@ -0,0 +1,53 @@
+#define PDstandard2nd1(u) (p1o2dx*(-(u)[di*(-1)+dj*(0)+dk*(0)] + (u)[di*(1)+dj*(0)+dk*(0)]))
+#define PDstandard2nd2(u) (p1o2dy*(-(u)[di*(0)+dj*(-1)+dk*(0)] + (u)[di*(0)+dj*(1)+dk*(0)]))
+#define PDstandard2nd3(u) (p1o2dz*(-(u)[di*(0)+dj*(0)+dk*(-1)] + (u)[di*(0)+dj*(0)+dk*(1)]))
+#define PDstandard2nd11(u) (p1odx2*(-2*(u)[di*(0)+dj*(0)+dk*(0)] + (u)[di*(-1)+dj*(0)+dk*(0)] + (u)[di*(1)+dj*(0)+dk*(0)]))
+#define PDstandard2nd22(u) (p1ody2*(-2*(u)[di*(0)+dj*(0)+dk*(0)] + (u)[di*(0)+dj*(-1)+dk*(0)] + (u)[di*(0)+dj*(1)+dk*(0)]))
+#define PDstandard2nd33(u) (p1odz2*(-2*(u)[di*(0)+dj*(0)+dk*(0)] + (u)[di*(0)+dj*(0)+dk*(-1)] + (u)[di*(0)+dj*(0)+dk*(1)]))
+#define PDstandard2nd12(u) (p1o4dxdy*((u)[di*(-1)+dj*(-1)+dk*(0)] - (u)[di*(-1)+dj*(1)+dk*(0)] - (u)[di*(1)+dj*(-1)+dk*(0)] + (u)[di*(1)+dj*(1)+dk*(0)]))
+#define PDstandard2nd13(u) (p1o4dxdz*((u)[di*(-1)+dj*(0)+dk*(-1)] - (u)[di*(-1)+dj*(0)+dk*(1)] - (u)[di*(1)+dj*(0)+dk*(-1)] + (u)[di*(1)+dj*(0)+dk*(1)]))
+#define PDstandard2nd21(u) (p1o4dxdy*((u)[di*(-1)+dj*(-1)+dk*(0)] - (u)[di*(-1)+dj*(1)+dk*(0)] - (u)[di*(1)+dj*(-1)+dk*(0)] + (u)[di*(1)+dj*(1)+dk*(0)]))
+#define PDstandard2nd23(u) (p1o4dydz*((u)[di*(0)+dj*(-1)+dk*(-1)] - (u)[di*(0)+dj*(-1)+dk*(1)] - (u)[di*(0)+dj*(1)+dk*(-1)] + (u)[di*(0)+dj*(1)+dk*(1)]))
+#define PDstandard2nd31(u) (p1o4dxdz*((u)[di*(-1)+dj*(0)+dk*(-1)] - (u)[di*(-1)+dj*(0)+dk*(1)] - (u)[di*(1)+dj*(0)+dk*(-1)] + (u)[di*(1)+dj*(0)+dk*(1)]))
+#define PDstandard2nd32(u) (p1o4dydz*((u)[di*(0)+dj*(-1)+dk*(-1)] - (u)[di*(0)+dj*(-1)+dk*(1)] - (u)[di*(0)+dj*(1)+dk*(-1)] + (u)[di*(0)+dj*(1)+dk*(1)]))
+#define PDstandard4th1(u) (p1o12dx*(-8*(u)[di*(-1)+dj*(0)+dk*(0)] + 8*(u)[di*(1)+dj*(0)+dk*(0)] + (u)[di*(-2)+dj*(0)+dk*(0)] - (u)[di*(2)+dj*(0)+dk*(0)]))
+#define PDstandard4th2(u) (p1o12dy*(-8*(u)[di*(0)+dj*(-1)+dk*(0)] + 8*(u)[di*(0)+dj*(1)+dk*(0)] + (u)[di*(0)+dj*(-2)+dk*(0)] - (u)[di*(0)+dj*(2)+dk*(0)]))
+#define PDstandard4th3(u) (p1o12dz*(-8*(u)[di*(0)+dj*(0)+dk*(-1)] + 8*(u)[di*(0)+dj*(0)+dk*(1)] + (u)[di*(0)+dj*(0)+dk*(-2)] - (u)[di*(0)+dj*(0)+dk*(2)]))
+#define PDstandard4th11(u) (pm1o12dx2*(30*(u)[di*(0)+dj*(0)+dk*(0)] - 16*((u)[di*(-1)+dj*(0)+dk*(0)] + (u)[di*(1)+dj*(0)+dk*(0)]) + (u)[di*(-2)+dj*(0)+dk*(0)] + (u)[di*(2)+dj*(0)+dk*(0)]))
+#define PDstandard4th22(u) (pm1o12dy2*(30*(u)[di*(0)+dj*(0)+dk*(0)] - 16*((u)[di*(0)+dj*(-1)+dk*(0)] + (u)[di*(0)+dj*(1)+dk*(0)]) + (u)[di*(0)+dj*(-2)+dk*(0)] + (u)[di*(0)+dj*(2)+dk*(0)]))
+#define PDstandard4th33(u) (pm1o12dz2*(30*(u)[di*(0)+dj*(0)+dk*(0)] - 16*((u)[di*(0)+dj*(0)+dk*(-1)] + (u)[di*(0)+dj*(0)+dk*(1)]) + (u)[di*(0)+dj*(0)+dk*(-2)] + (u)[di*(0)+dj*(0)+dk*(2)]))
+#define PDstandard4th12(u) (p1o144dxdy*(-64*((u)[di*(-1)+dj*(1)+dk*(0)] + (u)[di*(1)+dj*(-1)+dk*(0)]) + 64*((u)[di*(-1)+dj*(-1)+dk*(0)] + (u)[di*(1)+dj*(1)+dk*(0)]) + 8*((u)[di*(-1)+dj*(2)+dk*(0)] + (u)[di*(1)+dj*(-2)+dk*(0)] + (u)[di*(-2)+dj*(1)+dk*(0)] + (u)[di*(2)+dj*(-1)+dk*(0)]) - 8*((u)[di*(-1)+dj*(-2)+dk*(0)] + (u)[di*(1)+dj*(2)+dk*(0)] + (u)[di*(-2)+dj*(-1)+dk*(0)] + (u)[di*(2)+dj*(1)+dk*(0)]) + (u)[di*(-2)+dj*(-2)+dk*(0)] - (u)[di*(-2)+dj*(2)+dk*(0)] - (u)[di*(2)+dj*(-2)+dk*(0)] + (u)[di*(2)+dj*(2)+dk*(0)]))
+#define PDstandard4th13(u) (p1o144dxdz*(-64*((u)[di*(-1)+dj*(0)+dk*(1)] + (u)[di*(1)+dj*(0)+dk*(-1)]) + 64*((u)[di*(-1)+dj*(0)+dk*(-1)] + (u)[di*(1)+dj*(0)+dk*(1)]) + 8*((u)[di*(-1)+dj*(0)+dk*(2)] + (u)[di*(1)+dj*(0)+dk*(-2)] + (u)[di*(-2)+dj*(0)+dk*(1)] + (u)[di*(2)+dj*(0)+dk*(-1)]) - 8*((u)[di*(-1)+dj*(0)+dk*(-2)] + (u)[di*(1)+dj*(0)+dk*(2)] + (u)[di*(-2)+dj*(0)+dk*(-1)] + (u)[di*(2)+dj*(0)+dk*(1)]) + (u)[di*(-2)+dj*(0)+dk*(-2)] - (u)[di*(-2)+dj*(0)+dk*(2)] - (u)[di*(2)+dj*(0)+dk*(-2)] + (u)[di*(2)+dj*(0)+dk*(2)]))
+#define PDstandard4th21(u) (p1o144dxdy*(-64*((u)[di*(-1)+dj*(1)+dk*(0)] + (u)[di*(1)+dj*(-1)+dk*(0)]) + 64*((u)[di*(-1)+dj*(-1)+dk*(0)] + (u)[di*(1)+dj*(1)+dk*(0)]) + 8*((u)[di*(-1)+dj*(2)+dk*(0)] + (u)[di*(1)+dj*(-2)+dk*(0)] + (u)[di*(-2)+dj*(1)+dk*(0)] + (u)[di*(2)+dj*(-1)+dk*(0)]) - 8*((u)[di*(-1)+dj*(-2)+dk*(0)] + (u)[di*(1)+dj*(2)+dk*(0)] + (u)[di*(-2)+dj*(-1)+dk*(0)] + (u)[di*(2)+dj*(1)+dk*(0)]) + (u)[di*(-2)+dj*(-2)+dk*(0)] - (u)[di*(-2)+dj*(2)+dk*(0)] - (u)[di*(2)+dj*(-2)+dk*(0)] + (u)[di*(2)+dj*(2)+dk*(0)]))
+#define PDstandard4th23(u) (p1o144dydz*(-64*((u)[di*(0)+dj*(-1)+dk*(1)] + (u)[di*(0)+dj*(1)+dk*(-1)]) + 64*((u)[di*(0)+dj*(-1)+dk*(-1)] + (u)[di*(0)+dj*(1)+dk*(1)]) + 8*((u)[di*(0)+dj*(-1)+dk*(2)] + (u)[di*(0)+dj*(1)+dk*(-2)] + (u)[di*(0)+dj*(-2)+dk*(1)] + (u)[di*(0)+dj*(2)+dk*(-1)]) - 8*((u)[di*(0)+dj*(-1)+dk*(-2)] + (u)[di*(0)+dj*(1)+dk*(2)] + (u)[di*(0)+dj*(-2)+dk*(-1)] + (u)[di*(0)+dj*(2)+dk*(1)]) + (u)[di*(0)+dj*(-2)+dk*(-2)] - (u)[di*(0)+dj*(-2)+dk*(2)] - (u)[di*(0)+dj*(2)+dk*(-2)] + (u)[di*(0)+dj*(2)+dk*(2)]))
+#define PDstandard4th31(u) (p1o144dxdz*(-64*((u)[di*(-1)+dj*(0)+dk*(1)] + (u)[di*(1)+dj*(0)+dk*(-1)]) + 64*((u)[di*(-1)+dj*(0)+dk*(-1)] + (u)[di*(1)+dj*(0)+dk*(1)]) + 8*((u)[di*(-1)+dj*(0)+dk*(2)] + (u)[di*(1)+dj*(0)+dk*(-2)] + (u)[di*(-2)+dj*(0)+dk*(1)] + (u)[di*(2)+dj*(0)+dk*(-1)]) - 8*((u)[di*(-1)+dj*(0)+dk*(-2)] + (u)[di*(1)+dj*(0)+dk*(2)] + (u)[di*(-2)+dj*(0)+dk*(-1)] + (u)[di*(2)+dj*(0)+dk*(1)]) + (u)[di*(-2)+dj*(0)+dk*(-2)] - (u)[di*(-2)+dj*(0)+dk*(2)] - (u)[di*(2)+dj*(0)+dk*(-2)] + (u)[di*(2)+dj*(0)+dk*(2)]))
+#define PDstandard4th32(u) (p1o144dydz*(-64*((u)[di*(0)+dj*(-1)+dk*(1)] + (u)[di*(0)+dj*(1)+dk*(-1)]) + 64*((u)[di*(0)+dj*(-1)+dk*(-1)] + (u)[di*(0)+dj*(1)+dk*(1)]) + 8*((u)[di*(0)+dj*(-1)+dk*(2)] + (u)[di*(0)+dj*(1)+dk*(-2)] + (u)[di*(0)+dj*(-2)+dk*(1)] + (u)[di*(0)+dj*(2)+dk*(-1)]) - 8*((u)[di*(0)+dj*(-1)+dk*(-2)] + (u)[di*(0)+dj*(1)+dk*(2)] + (u)[di*(0)+dj*(-2)+dk*(-1)] + (u)[di*(0)+dj*(2)+dk*(1)]) + (u)[di*(0)+dj*(-2)+dk*(-2)] - (u)[di*(0)+dj*(-2)+dk*(2)] - (u)[di*(0)+dj*(2)+dk*(-2)] + (u)[di*(0)+dj*(2)+dk*(2)]))
+#define PDonesided2nd1(u) (pm1o2dx*(3*(u)[di*(0)+dj*(0)+dk*(0)] + (u)[di*(2*dir1)+dj*(0)+dk*(0)] - 4*(u)[di*(dir1)+dj*(0)+dk*(0)])*dir1)
+#define PDonesided2nd2(u) (pm1o2dy*(3*(u)[di*(0)+dj*(0)+dk*(0)] + (u)[di*(0)+dj*(2*dir2)+dk*(0)] - 4*(u)[di*(0)+dj*(dir2)+dk*(0)])*dir2)
+#define PDonesided2nd3(u) (pm1o2dz*(3*(u)[di*(0)+dj*(0)+dk*(0)] + (u)[di*(0)+dj*(0)+dk*(2*dir3)] - 4*(u)[di*(0)+dj*(0)+dk*(dir3)])*dir3)
+#define Diss2nd(u) (-(p1odxdydz*diss*((6*(u)[di*(0)+dj*(0)+dk*(0)] - 4*((u)[di*(0)+dj*(0)+dk*(-1)] + (u)[di*(0)+dj*(0)+dk*(1)]) + (u)[di*(0)+dj*(0)+dk*(-2)] + (u)[di*(0)+dj*(0)+dk*(2)])*INV(dxi)*INV(dyi) + ((6*(u)[di*(0)+dj*(0)+dk*(0)] - 4*((u)[di*(0)+dj*(-1)+dk*(0)] + (u)[di*(0)+dj*(1)+dk*(0)]) + (u)[di*(0)+dj*(-2)+dk*(0)] + (u)[di*(0)+dj*(2)+dk*(0)])*INV(dxi) + (6*(u)[di*(0)+dj*(0)+dk*(0)] - 4*((u)[di*(-1)+dj*(0)+dk*(0)] + (u)[di*(1)+dj*(0)+dk*(0)]) + (u)[di*(-2)+dj*(0)+dk*(0)] + (u)[di*(2)+dj*(0)+dk*(0)])*INV(dyi))*INV(dzi))))
+#define Diss4th(u) (p1odxdydz*diss*((-20*(u)[di*(0)+dj*(0)+dk*(0)] + 15*((u)[di*(0)+dj*(0)+dk*(-1)] + (u)[di*(0)+dj*(0)+dk*(1)]) - 6*((u)[di*(0)+dj*(0)+dk*(-2)] + (u)[di*(0)+dj*(0)+dk*(2)]) + (u)[di*(0)+dj*(0)+dk*(-3)] + (u)[di*(0)+dj*(0)+dk*(3)])*INV(dxi)*INV(dyi) + ((15*((u)[di*(0)+dj*(-1)+dk*(0)] + (u)[di*(0)+dj*(1)+dk*(0)]) - 6*((u)[di*(0)+dj*(-2)+dk*(0)] + (u)[di*(0)+dj*(2)+dk*(0)]) + (u)[di*(0)+dj*(-3)+dk*(0)] + (u)[di*(0)+dj*(3)+dk*(0)])*INV(dxi) + (15*((u)[di*(-1)+dj*(0)+dk*(0)] + (u)[di*(1)+dj*(0)+dk*(0)]) - 6*((u)[di*(-2)+dj*(0)+dk*(0)] + (u)[di*(2)+dj*(0)+dk*(0)]) + (u)[di*(-3)+dj*(0)+dk*(0)] + (u)[di*(3)+dj*(0)+dk*(0)])*INV(dyi) - 20*(u)[di*(0)+dj*(0)+dk*(0)]*(INV(dxi) + INV(dyi)))*INV(dzi)))
+#define PDzero1(u) (p1o2dx*(-(u)[di*(-1)+dj*(0)+dk*(0)] + (u)[di*(1)+dj*(0)+dk*(0)]))
+#define PDzero2(u) (p1o2dy*(-(u)[di*(0)+dj*(-1)+dk*(0)] + (u)[di*(0)+dj*(1)+dk*(0)]))
+#define PDzero3(u) (p1o2dz*(-(u)[di*(0)+dj*(0)+dk*(-1)] + (u)[di*(0)+dj*(0)+dk*(1)]))
+#define PDzero11(u) (p1o4dx2*(-2*(u)[di*(0)+dj*(0)+dk*(0)] + (u)[di*(-2)+dj*(0)+dk*(0)] + (u)[di*(2)+dj*(0)+dk*(0)]))
+#define PDzero12(u) (p1o4dxdy*((u)[di*(-1)+dj*(-1)+dk*(0)] - (u)[di*(-1)+dj*(1)+dk*(0)] - (u)[di*(1)+dj*(-1)+dk*(0)] + (u)[di*(1)+dj*(1)+dk*(0)]))
+#define PDzero13(u) (p1o4dxdz*((u)[di*(-1)+dj*(0)+dk*(-1)] - (u)[di*(-1)+dj*(0)+dk*(1)] - (u)[di*(1)+dj*(0)+dk*(-1)] + (u)[di*(1)+dj*(0)+dk*(1)]))
+#define PDzero21(u) (p1o4dxdy*((u)[di*(-1)+dj*(-1)+dk*(0)] - (u)[di*(-1)+dj*(1)+dk*(0)] - (u)[di*(1)+dj*(-1)+dk*(0)] + (u)[di*(1)+dj*(1)+dk*(0)]))
+#define PDzero22(u) (p1o4dy2*(-2*(u)[di*(0)+dj*(0)+dk*(0)] + (u)[di*(0)+dj*(-2)+dk*(0)] + (u)[di*(0)+dj*(2)+dk*(0)]))
+#define PDzero23(u) (p1o4dydz*((u)[di*(0)+dj*(-1)+dk*(-1)] - (u)[di*(0)+dj*(-1)+dk*(1)] - (u)[di*(0)+dj*(1)+dk*(-1)] + (u)[di*(0)+dj*(1)+dk*(1)]))
+#define PDzero31(u) (p1o4dxdz*((u)[di*(-1)+dj*(0)+dk*(-1)] - (u)[di*(-1)+dj*(0)+dk*(1)] - (u)[di*(1)+dj*(0)+dk*(-1)] + (u)[di*(1)+dj*(0)+dk*(1)]))
+#define PDzero32(u) (p1o4dydz*((u)[di*(0)+dj*(-1)+dk*(-1)] - (u)[di*(0)+dj*(-1)+dk*(1)] - (u)[di*(0)+dj*(1)+dk*(-1)] + (u)[di*(0)+dj*(1)+dk*(1)]))
+#define PDzero33(u) (p1o4dz2*(-2*(u)[di*(0)+dj*(0)+dk*(0)] + (u)[di*(0)+dj*(0)+dk*(-2)] + (u)[di*(0)+dj*(0)+dk*(2)]))
+#define PDplus1(u) (p1odx*(-(u)[di*(0)+dj*(0)+dk*(0)] + (u)[di*(1)+dj*(0)+dk*(0)]))
+#define PDplus2(u) (p1ody*(-(u)[di*(0)+dj*(0)+dk*(0)] + (u)[di*(0)+dj*(1)+dk*(0)]))
+#define PDplus3(u) (p1odz*(-(u)[di*(0)+dj*(0)+dk*(0)] + (u)[di*(0)+dj*(0)+dk*(1)]))
+#define DiffPlus1(u) (p1o1*(-(u)[di*(0)+dj*(0)+dk*(0)] + (u)[di*(1)+dj*(0)+dk*(0)]))
+#define DiffPlus2(u) (p1o1*(-(u)[di*(0)+dj*(0)+dk*(0)] + (u)[di*(0)+dj*(1)+dk*(0)]))
+#define DiffPlus3(u) (p1o1*(-(u)[di*(0)+dj*(0)+dk*(0)] + (u)[di*(0)+dj*(0)+dk*(1)]))
+#define DiffMinus1(u) (p1o1*((u)[di*(0)+dj*(0)+dk*(0)] - (u)[di*(-1)+dj*(0)+dk*(0)]))
+#define DiffMinus2(u) (p1o1*((u)[di*(0)+dj*(0)+dk*(0)] - (u)[di*(0)+dj*(-1)+dk*(0)]))
+#define DiffMinus3(u) (p1o1*((u)[di*(0)+dj*(0)+dk*(0)] - (u)[di*(0)+dj*(0)+dk*(-1)]))
+#define ShiftMinus1(u) (p1o1*(u)[di*(-1)+dj*(0)+dk*(0)])
+#define ShiftMinus2(u) (p1o1*(u)[di*(0)+dj*(-1)+dk*(0)])
+#define ShiftMinus3(u) (p1o1*(u)[di*(0)+dj*(0)+dk*(-1)])
diff --git a/Examples/Wave/src/RegisterMoL.cc b/Examples/Wave/src/RegisterMoL.cc
new file mode 100644
index 0000000..2d73922
--- /dev/null
+++ b/Examples/Wave/src/RegisterMoL.cc
@@ -0,0 +1,18 @@
+/*  File produced by Kranc */
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+
+extern "C" void Wave_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("Wave::phi"),  CCTK_VarIndex("Wave::phirhs"));
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("Wave::pi"),  CCTK_VarIndex("Wave::pirhs"));
+  return;
+}
diff --git a/Examples/Wave/src/RegisterSymmetries.cc b/Examples/Wave/src/RegisterSymmetries.cc
new file mode 100644
index 0000000..c522d51
--- /dev/null
+++ b/Examples/Wave/src/RegisterSymmetries.cc
@@ -0,0 +1,64 @@
+/*  File produced by Kranc */
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "Symmetry.h"
+
+extern "C" void Wave_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, "Wave::phi");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "Wave::pi");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "Wave::phiError");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "Wave::piError");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "Wave::phiExact");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "Wave::piExact");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "Wave::VL2");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "Wave::VDP");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "Wave::EL2");
+  
+}
diff --git a/Examples/Wave/src/Startup.cc b/Examples/Wave/src/Startup.cc
new file mode 100644
index 0000000..9281f39
--- /dev/null
+++ b/Examples/Wave/src/Startup.cc
@@ -0,0 +1,10 @@
+/*  File produced by Kranc */
+
+#include "cctk.h"
+
+extern "C" int Wave_Startup(void)
+{
+  const char * banner = "Wave";
+  CCTK_RegisterBanner(banner);
+  return 0;
+}
diff --git a/Examples/Wave/src/make.code.defn b/Examples/Wave/src/make.code.defn
new file mode 100644
index 0000000..4dcd739
--- /dev/null
+++ b/Examples/Wave/src/make.code.defn
@@ -0,0 +1,3 @@
+# File produced by Kranc
+
+SRCS = Startup.cc RegisterMoL.cc RegisterSymmetries.cc wave_exact_sine.cc wave_exact_gaussian.cc wave_import_exact.cc wave_evolve.cc wave_calc_errors.cc wave_calc_norm.cc wave_boundary.cc Boundaries.cc 
diff --git a/Examples/Wave/src/wave_boundary.cc b/Examples/Wave/src/wave_boundary.cc
new file mode 100644
index 0000000..0341182
--- /dev/null
+++ b/Examples/Wave/src/wave_boundary.cc
@@ -0,0 +1,173 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+
+extern "C" void wave_boundary_SelectBCs(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "Wave::evolvedrhs","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for Wave::evolvedrhs.");
+  return;
+}
+
+static void wave_boundary_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const min[3], int const max[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Declare the variables used for looping over grid points */
+  CCTK_INT i, j, k;
+  // CCTK_INT index = INITVALUE;
+  
+  /* Declare finite differencing variables */
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering wave_boundary_Body");
+  }
+  
+  if (cctk_iteration % wave_boundary_calc_every != wave_boundary_calc_offset)
+  {
+    return;
+  }
+  
+  const char *groups[] = {"Wave::evolved","Wave::evolvedrhs","grid::coordinates"};
+  GenericFD_AssertGroupStorage(cctkGH, "wave_boundary", 3, groups);
+  
+  GenericFD_EnsureStencilFits(cctkGH, "wave_boundary", 2, 2, 2);
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  CCTK_REAL const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL const dxi = INV(dx);
+  CCTK_REAL const dyi = INV(dy);
+  CCTK_REAL const dzi = INV(dz);
+  CCTK_REAL const khalf = 0.5;
+  CCTK_REAL const kthird = 1/3.0;
+  CCTK_REAL const ktwothird = 2.0/3.0;
+  CCTK_REAL const kfourthird = 4.0/3.0;
+  CCTK_REAL const keightthird = 8.0/3.0;
+  CCTK_REAL const hdxi = 0.5 * dxi;
+  CCTK_REAL const hdyi = 0.5 * dyi;
+  CCTK_REAL const hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL const p1o1 = 1;
+  CCTK_REAL const p1o12dx = 0.0833333333333333333333333333333*INV(dx);
+  CCTK_REAL const p1o12dy = 0.0833333333333333333333333333333*INV(dy);
+  CCTK_REAL const p1o12dz = 0.0833333333333333333333333333333*INV(dz);
+  CCTK_REAL const p1o144dxdy = 0.00694444444444444444444444444444*INV(dx)*INV(dy);
+  CCTK_REAL const p1o144dxdz = 0.00694444444444444444444444444444*INV(dx)*INV(dz);
+  CCTK_REAL const p1o144dydz = 0.00694444444444444444444444444444*INV(dy)*INV(dz);
+  CCTK_REAL const p1o2dx = 0.5*INV(dx);
+  CCTK_REAL const p1o2dy = 0.5*INV(dy);
+  CCTK_REAL const p1o2dz = 0.5*INV(dz);
+  CCTK_REAL const p1o4dx2 = 0.25*INV(SQR(dx));
+  CCTK_REAL const p1o4dxdy = 0.25*INV(dx)*INV(dy);
+  CCTK_REAL const p1o4dxdz = 0.25*INV(dx)*INV(dz);
+  CCTK_REAL const p1o4dy2 = 0.25*INV(SQR(dy));
+  CCTK_REAL const p1o4dydz = 0.25*INV(dy)*INV(dz);
+  CCTK_REAL const p1o4dz2 = 0.25*INV(SQR(dz));
+  CCTK_REAL const p1odx = INV(dx);
+  CCTK_REAL const p1odx2 = INV(SQR(dx));
+  CCTK_REAL const p1odxdydz = INV(dx)*INV(dy)*INV(dz);
+  CCTK_REAL const p1ody = INV(dy);
+  CCTK_REAL const p1ody2 = INV(SQR(dy));
+  CCTK_REAL const p1odz = INV(dz);
+  CCTK_REAL const p1odz2 = INV(SQR(dz));
+  CCTK_REAL const pm1o12dx2 = -0.0833333333333333333333333333333*INV(SQR(dx));
+  CCTK_REAL const pm1o12dy2 = -0.0833333333333333333333333333333*INV(SQR(dy));
+  CCTK_REAL const pm1o12dz2 = -0.0833333333333333333333333333333*INV(SQR(dz));
+  CCTK_REAL const pm1o2dx = -0.5*INV(dx);
+  CCTK_REAL const pm1o2dy = -0.5*INV(dy);
+  CCTK_REAL const pm1o2dz = -0.5*INV(dz);
+  
+  /* Loop over the grid points */
+  for (k = min[2]; k < max[2]; k++)
+  {
+    for (j = min[1]; j < max[1]; j++)
+    {
+      for (i = min[0]; i < max[0]; i++)
+      {
+         int  const  index  =  CCTK_GFINDEX3D(cctkGH,i,j,k) ;
+        
+        /* Assign local copies of grid functions */
+        
+        CCTK_REAL phiL = phi[index];
+        CCTK_REAL piL = pi[index];
+        CCTK_REAL rL = r[index];
+        CCTK_REAL xL = x[index];
+        CCTK_REAL yL = y[index];
+        CCTK_REAL zL = z[index];
+        
+        
+        /* Include user supplied include files */
+        
+        /* Precompute derivatives */
+        
+        /* Calculate temporaries and grid functions */
+        CCTK_REAL norm1 = -(xL*INV(rL));
+        
+        CCTK_REAL norm2 = -(yL*INV(rL));
+        
+        CCTK_REAL norm3 = -(zL*INV(rL));
+        
+        ptrdiff_t dir1 = Sign(norm1);
+        
+        ptrdiff_t dir2 = Sign(norm2);
+        
+        ptrdiff_t dir3 = Sign(norm3);
+        
+        CCTK_REAL phirhsL = PDonesided2nd1(&phi[index])*norm1 + 
+          PDonesided2nd2(&phi[index])*norm2 + 
+          PDonesided2nd3(&phi[index])*norm3 - phiL*INV(rL);
+        
+        CCTK_REAL pirhsL = PDonesided2nd1(&pi[index])*norm1 + 
+          PDonesided2nd2(&pi[index])*norm2 + PDonesided2nd3(&pi[index])*norm3 
+          - piL*INV(rL);
+        
+        /* Copy local copies back to grid functions */
+        phirhs[index] = phirhsL;
+        pirhs[index] = pirhsL;
+      }
+    }
+  }
+}
+
+extern "C" void wave_boundary(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  GenericFD_LoopOverBoundary(cctkGH, &wave_boundary_Body);
+}
diff --git a/Examples/Wave/src/wave_calc_errors.cc b/Examples/Wave/src/wave_calc_errors.cc
new file mode 100644
index 0000000..395f33a
--- /dev/null
+++ b/Examples/Wave/src/wave_calc_errors.cc
@@ -0,0 +1,142 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+
+static void wave_calc_errors_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const min[3], int const max[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Declare the variables used for looping over grid points */
+  CCTK_INT i, j, k;
+  // CCTK_INT index = INITVALUE;
+  
+  /* Declare finite differencing variables */
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering wave_calc_errors_Body");
+  }
+  
+  if (cctk_iteration % wave_calc_errors_calc_every != wave_calc_errors_calc_offset)
+  {
+    return;
+  }
+  
+  const char *groups[] = {"Wave::errors","Wave::evolved","Wave::exact"};
+  GenericFD_AssertGroupStorage(cctkGH, "wave_calc_errors", 3, groups);
+  
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  CCTK_REAL const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL const dxi = INV(dx);
+  CCTK_REAL const dyi = INV(dy);
+  CCTK_REAL const dzi = INV(dz);
+  CCTK_REAL const khalf = 0.5;
+  CCTK_REAL const kthird = 1/3.0;
+  CCTK_REAL const ktwothird = 2.0/3.0;
+  CCTK_REAL const kfourthird = 4.0/3.0;
+  CCTK_REAL const keightthird = 8.0/3.0;
+  CCTK_REAL const hdxi = 0.5 * dxi;
+  CCTK_REAL const hdyi = 0.5 * dyi;
+  CCTK_REAL const hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL const p1o1 = 1;
+  CCTK_REAL const p1o12dx = 0.0833333333333333333333333333333*INV(dx);
+  CCTK_REAL const p1o12dy = 0.0833333333333333333333333333333*INV(dy);
+  CCTK_REAL const p1o12dz = 0.0833333333333333333333333333333*INV(dz);
+  CCTK_REAL const p1o144dxdy = 0.00694444444444444444444444444444*INV(dx)*INV(dy);
+  CCTK_REAL const p1o144dxdz = 0.00694444444444444444444444444444*INV(dx)*INV(dz);
+  CCTK_REAL const p1o144dydz = 0.00694444444444444444444444444444*INV(dy)*INV(dz);
+  CCTK_REAL const p1o2dx = 0.5*INV(dx);
+  CCTK_REAL const p1o2dy = 0.5*INV(dy);
+  CCTK_REAL const p1o2dz = 0.5*INV(dz);
+  CCTK_REAL const p1o4dx2 = 0.25*INV(SQR(dx));
+  CCTK_REAL const p1o4dxdy = 0.25*INV(dx)*INV(dy);
+  CCTK_REAL const p1o4dxdz = 0.25*INV(dx)*INV(dz);
+  CCTK_REAL const p1o4dy2 = 0.25*INV(SQR(dy));
+  CCTK_REAL const p1o4dydz = 0.25*INV(dy)*INV(dz);
+  CCTK_REAL const p1o4dz2 = 0.25*INV(SQR(dz));
+  CCTK_REAL const p1odx = INV(dx);
+  CCTK_REAL const p1odx2 = INV(SQR(dx));
+  CCTK_REAL const p1odxdydz = INV(dx)*INV(dy)*INV(dz);
+  CCTK_REAL const p1ody = INV(dy);
+  CCTK_REAL const p1ody2 = INV(SQR(dy));
+  CCTK_REAL const p1odz = INV(dz);
+  CCTK_REAL const p1odz2 = INV(SQR(dz));
+  CCTK_REAL const pm1o12dx2 = -0.0833333333333333333333333333333*INV(SQR(dx));
+  CCTK_REAL const pm1o12dy2 = -0.0833333333333333333333333333333*INV(SQR(dy));
+  CCTK_REAL const pm1o12dz2 = -0.0833333333333333333333333333333*INV(SQR(dz));
+  CCTK_REAL const pm1o2dx = -0.5*INV(dx);
+  CCTK_REAL const pm1o2dy = -0.5*INV(dy);
+  CCTK_REAL const pm1o2dz = -0.5*INV(dz);
+  
+  /* Loop over the grid points */
+  for (k = min[2]; k < max[2]; k++)
+  {
+    for (j = min[1]; j < max[1]; j++)
+    {
+      for (i = min[0]; i < max[0]; i++)
+      {
+         int  const  index  =  CCTK_GFINDEX3D(cctkGH,i,j,k) ;
+        
+        /* Assign local copies of grid functions */
+        
+        CCTK_REAL phiL = phi[index];
+        CCTK_REAL phiExactL = phiExact[index];
+        CCTK_REAL piL = pi[index];
+        CCTK_REAL piExactL = piExact[index];
+        
+        
+        /* Include user supplied include files */
+        
+        /* Precompute derivatives */
+        
+        /* Calculate temporaries and grid functions */
+        CCTK_REAL phiErrorL = -phiExactL + phiL;
+        
+        CCTK_REAL piErrorL = -piExactL + piL;
+        
+        /* Copy local copies back to grid functions */
+        phiError[index] = phiErrorL;
+        piError[index] = piErrorL;
+      }
+    }
+  }
+}
+
+extern "C" void wave_calc_errors(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  GenericFD_LoopOverEverything(cctkGH, &wave_calc_errors_Body);
+}
diff --git a/Examples/Wave/src/wave_calc_norm.cc b/Examples/Wave/src/wave_calc_norm.cc
new file mode 100644
index 0000000..9546f10
--- /dev/null
+++ b/Examples/Wave/src/wave_calc_norm.cc
@@ -0,0 +1,168 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+
+extern "C" void wave_calc_norm_SelectBCs(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "Wave::norms","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for Wave::norms.");
+  return;
+}
+
+static void wave_calc_norm_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const min[3], int const max[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Declare the variables used for looping over grid points */
+  CCTK_INT i, j, k;
+  // CCTK_INT index = INITVALUE;
+  
+  /* Declare finite differencing variables */
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering wave_calc_norm_Body");
+  }
+  
+  if (cctk_iteration % wave_calc_norm_calc_every != wave_calc_norm_calc_offset)
+  {
+    return;
+  }
+  
+  const char *groups[] = {"Wave::errors","Wave::evolved","Wave::norms"};
+  GenericFD_AssertGroupStorage(cctkGH, "wave_calc_norm", 3, groups);
+  
+  GenericFD_EnsureStencilFits(cctkGH, "wave_calc_norm", 1, 1, 1);
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  CCTK_REAL const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL const dxi = INV(dx);
+  CCTK_REAL const dyi = INV(dy);
+  CCTK_REAL const dzi = INV(dz);
+  CCTK_REAL const khalf = 0.5;
+  CCTK_REAL const kthird = 1/3.0;
+  CCTK_REAL const ktwothird = 2.0/3.0;
+  CCTK_REAL const kfourthird = 4.0/3.0;
+  CCTK_REAL const keightthird = 8.0/3.0;
+  CCTK_REAL const hdxi = 0.5 * dxi;
+  CCTK_REAL const hdyi = 0.5 * dyi;
+  CCTK_REAL const hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL const p1o1 = 1;
+  CCTK_REAL const p1o12dx = 0.0833333333333333333333333333333*INV(dx);
+  CCTK_REAL const p1o12dy = 0.0833333333333333333333333333333*INV(dy);
+  CCTK_REAL const p1o12dz = 0.0833333333333333333333333333333*INV(dz);
+  CCTK_REAL const p1o144dxdy = 0.00694444444444444444444444444444*INV(dx)*INV(dy);
+  CCTK_REAL const p1o144dxdz = 0.00694444444444444444444444444444*INV(dx)*INV(dz);
+  CCTK_REAL const p1o144dydz = 0.00694444444444444444444444444444*INV(dy)*INV(dz);
+  CCTK_REAL const p1o2dx = 0.5*INV(dx);
+  CCTK_REAL const p1o2dy = 0.5*INV(dy);
+  CCTK_REAL const p1o2dz = 0.5*INV(dz);
+  CCTK_REAL const p1o4dx2 = 0.25*INV(SQR(dx));
+  CCTK_REAL const p1o4dxdy = 0.25*INV(dx)*INV(dy);
+  CCTK_REAL const p1o4dxdz = 0.25*INV(dx)*INV(dz);
+  CCTK_REAL const p1o4dy2 = 0.25*INV(SQR(dy));
+  CCTK_REAL const p1o4dydz = 0.25*INV(dy)*INV(dz);
+  CCTK_REAL const p1o4dz2 = 0.25*INV(SQR(dz));
+  CCTK_REAL const p1odx = INV(dx);
+  CCTK_REAL const p1odx2 = INV(SQR(dx));
+  CCTK_REAL const p1odxdydz = INV(dx)*INV(dy)*INV(dz);
+  CCTK_REAL const p1ody = INV(dy);
+  CCTK_REAL const p1ody2 = INV(SQR(dy));
+  CCTK_REAL const p1odz = INV(dz);
+  CCTK_REAL const p1odz2 = INV(SQR(dz));
+  CCTK_REAL const pm1o12dx2 = -0.0833333333333333333333333333333*INV(SQR(dx));
+  CCTK_REAL const pm1o12dy2 = -0.0833333333333333333333333333333*INV(SQR(dy));
+  CCTK_REAL const pm1o12dz2 = -0.0833333333333333333333333333333*INV(SQR(dz));
+  CCTK_REAL const pm1o2dx = -0.5*INV(dx);
+  CCTK_REAL const pm1o2dy = -0.5*INV(dy);
+  CCTK_REAL const pm1o2dz = -0.5*INV(dz);
+  
+  /* Loop over the grid points */
+  for (k = min[2]; k < max[2]; k++)
+  {
+    for (j = min[1]; j < max[1]; j++)
+    {
+      for (i = min[0]; i < max[0]; i++)
+      {
+         int  const  index  =  CCTK_GFINDEX3D(cctkGH,i,j,k) ;
+        
+        /* Assign local copies of grid functions */
+        
+        CCTK_REAL phiL = phi[index];
+        CCTK_REAL phiErrorL = phiError[index];
+        CCTK_REAL piL = pi[index];
+        CCTK_REAL piErrorL = piError[index];
+        
+        
+        /* Include user supplied include files */
+        
+        /* Precompute derivatives */
+        CCTK_REAL const PDplus1phi = PDplus1(&phi[index]);
+        CCTK_REAL const PDplus2phi = PDplus2(&phi[index]);
+        CCTK_REAL const PDplus3phi = PDplus3(&phi[index]);
+        
+        /* Calculate temporaries and grid functions */
+        CCTK_REAL VL2squared = SQR(phiL) + SQR(piL);
+        
+        CCTK_REAL VL2L = sqrt(VL2squared);
+        
+        CCTK_REAL VDPsquared = SQR(PDplus1phi) + SQR(PDplus2phi) + 
+          SQR(PDplus3phi) + SQR(piL);
+        
+        CCTK_REAL VDPL = sqrt(VDPsquared);
+        
+        CCTK_REAL EL2squared = SQR(phiErrorL) + SQR(piErrorL);
+        
+        CCTK_REAL EL2L = sqrt(EL2squared);
+        
+        /* Copy local copies back to grid functions */
+        EL2[index] = EL2L;
+        VDP[index] = VDPL;
+        VL2[index] = VL2L;
+      }
+    }
+  }
+}
+
+extern "C" void wave_calc_norm(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  GenericFD_LoopOverInterior(cctkGH, &wave_calc_norm_Body);
+}
diff --git a/Examples/Wave/src/wave_evolve.cc b/Examples/Wave/src/wave_evolve.cc
new file mode 100644
index 0000000..b3d11e1
--- /dev/null
+++ b/Examples/Wave/src/wave_evolve.cc
@@ -0,0 +1,157 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+
+extern "C" void wave_evolve_SelectBCs(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "Wave::evolvedrhs","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for Wave::evolvedrhs.");
+  return;
+}
+
+static void wave_evolve_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const min[3], int const max[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Declare the variables used for looping over grid points */
+  CCTK_INT i, j, k;
+  // CCTK_INT index = INITVALUE;
+  
+  /* Declare finite differencing variables */
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering wave_evolve_Body");
+  }
+  
+  if (cctk_iteration % wave_evolve_calc_every != wave_evolve_calc_offset)
+  {
+    return;
+  }
+  
+  const char *groups[] = {"Wave::evolved","Wave::evolvedrhs"};
+  GenericFD_AssertGroupStorage(cctkGH, "wave_evolve", 2, groups);
+  
+  GenericFD_EnsureStencilFits(cctkGH, "wave_evolve", 1, 1, 1);
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  CCTK_REAL const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL const dxi = INV(dx);
+  CCTK_REAL const dyi = INV(dy);
+  CCTK_REAL const dzi = INV(dz);
+  CCTK_REAL const khalf = 0.5;
+  CCTK_REAL const kthird = 1/3.0;
+  CCTK_REAL const ktwothird = 2.0/3.0;
+  CCTK_REAL const kfourthird = 4.0/3.0;
+  CCTK_REAL const keightthird = 8.0/3.0;
+  CCTK_REAL const hdxi = 0.5 * dxi;
+  CCTK_REAL const hdyi = 0.5 * dyi;
+  CCTK_REAL const hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL const p1o1 = 1;
+  CCTK_REAL const p1o12dx = 0.0833333333333333333333333333333*INV(dx);
+  CCTK_REAL const p1o12dy = 0.0833333333333333333333333333333*INV(dy);
+  CCTK_REAL const p1o12dz = 0.0833333333333333333333333333333*INV(dz);
+  CCTK_REAL const p1o144dxdy = 0.00694444444444444444444444444444*INV(dx)*INV(dy);
+  CCTK_REAL const p1o144dxdz = 0.00694444444444444444444444444444*INV(dx)*INV(dz);
+  CCTK_REAL const p1o144dydz = 0.00694444444444444444444444444444*INV(dy)*INV(dz);
+  CCTK_REAL const p1o2dx = 0.5*INV(dx);
+  CCTK_REAL const p1o2dy = 0.5*INV(dy);
+  CCTK_REAL const p1o2dz = 0.5*INV(dz);
+  CCTK_REAL const p1o4dx2 = 0.25*INV(SQR(dx));
+  CCTK_REAL const p1o4dxdy = 0.25*INV(dx)*INV(dy);
+  CCTK_REAL const p1o4dxdz = 0.25*INV(dx)*INV(dz);
+  CCTK_REAL const p1o4dy2 = 0.25*INV(SQR(dy));
+  CCTK_REAL const p1o4dydz = 0.25*INV(dy)*INV(dz);
+  CCTK_REAL const p1o4dz2 = 0.25*INV(SQR(dz));
+  CCTK_REAL const p1odx = INV(dx);
+  CCTK_REAL const p1odx2 = INV(SQR(dx));
+  CCTK_REAL const p1odxdydz = INV(dx)*INV(dy)*INV(dz);
+  CCTK_REAL const p1ody = INV(dy);
+  CCTK_REAL const p1ody2 = INV(SQR(dy));
+  CCTK_REAL const p1odz = INV(dz);
+  CCTK_REAL const p1odz2 = INV(SQR(dz));
+  CCTK_REAL const pm1o12dx2 = -0.0833333333333333333333333333333*INV(SQR(dx));
+  CCTK_REAL const pm1o12dy2 = -0.0833333333333333333333333333333*INV(SQR(dy));
+  CCTK_REAL const pm1o12dz2 = -0.0833333333333333333333333333333*INV(SQR(dz));
+  CCTK_REAL const pm1o2dx = -0.5*INV(dx);
+  CCTK_REAL const pm1o2dy = -0.5*INV(dy);
+  CCTK_REAL const pm1o2dz = -0.5*INV(dz);
+  
+  /* Loop over the grid points */
+  for (k = min[2]; k < max[2]; k++)
+  {
+    for (j = min[1]; j < max[1]; j++)
+    {
+      for (i = min[0]; i < max[0]; i++)
+      {
+         int  const  index  =  CCTK_GFINDEX3D(cctkGH,i,j,k) ;
+        
+        /* Assign local copies of grid functions */
+        
+        CCTK_REAL phiL = phi[index];
+        CCTK_REAL piL = pi[index];
+        
+        
+        /* Include user supplied include files */
+        
+        /* Precompute derivatives */
+        CCTK_REAL const PDstandard2nd11phi = PDstandard2nd11(&phi[index]);
+        CCTK_REAL const PDstandard2nd22phi = PDstandard2nd22(&phi[index]);
+        CCTK_REAL const PDstandard2nd33phi = PDstandard2nd33(&phi[index]);
+        
+        /* Calculate temporaries and grid functions */
+        CCTK_REAL phirhsL = piL;
+        
+        CCTK_REAL pirhsL = PDstandard2nd11phi + PDstandard2nd22phi + 
+          PDstandard2nd33phi;
+        
+        /* Copy local copies back to grid functions */
+        phirhs[index] = phirhsL;
+        pirhs[index] = pirhsL;
+      }
+    }
+  }
+}
+
+extern "C" void wave_evolve(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  GenericFD_LoopOverInterior(cctkGH, &wave_evolve_Body);
+}
diff --git a/Examples/Wave/src/wave_exact_gaussian.cc b/Examples/Wave/src/wave_exact_gaussian.cc
new file mode 100644
index 0000000..1efc9b5
--- /dev/null
+++ b/Examples/Wave/src/wave_exact_gaussian.cc
@@ -0,0 +1,152 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+
+static void wave_exact_gaussian_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const min[3], int const max[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Declare the variables used for looping over grid points */
+  CCTK_INT i, j, k;
+  // CCTK_INT index = INITVALUE;
+  
+  /* Declare finite differencing variables */
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering wave_exact_gaussian_Body");
+  }
+  
+  if (cctk_iteration % wave_exact_gaussian_calc_every != wave_exact_gaussian_calc_offset)
+  {
+    return;
+  }
+  
+  const char *groups[] = {"Wave::exact","grid::coordinates"};
+  GenericFD_AssertGroupStorage(cctkGH, "wave_exact_gaussian", 2, groups);
+  
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  CCTK_REAL const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL const dxi = INV(dx);
+  CCTK_REAL const dyi = INV(dy);
+  CCTK_REAL const dzi = INV(dz);
+  CCTK_REAL const khalf = 0.5;
+  CCTK_REAL const kthird = 1/3.0;
+  CCTK_REAL const ktwothird = 2.0/3.0;
+  CCTK_REAL const kfourthird = 4.0/3.0;
+  CCTK_REAL const keightthird = 8.0/3.0;
+  CCTK_REAL const hdxi = 0.5 * dxi;
+  CCTK_REAL const hdyi = 0.5 * dyi;
+  CCTK_REAL const hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL const p1o1 = 1;
+  CCTK_REAL const p1o12dx = 0.0833333333333333333333333333333*INV(dx);
+  CCTK_REAL const p1o12dy = 0.0833333333333333333333333333333*INV(dy);
+  CCTK_REAL const p1o12dz = 0.0833333333333333333333333333333*INV(dz);
+  CCTK_REAL const p1o144dxdy = 0.00694444444444444444444444444444*INV(dx)*INV(dy);
+  CCTK_REAL const p1o144dxdz = 0.00694444444444444444444444444444*INV(dx)*INV(dz);
+  CCTK_REAL const p1o144dydz = 0.00694444444444444444444444444444*INV(dy)*INV(dz);
+  CCTK_REAL const p1o2dx = 0.5*INV(dx);
+  CCTK_REAL const p1o2dy = 0.5*INV(dy);
+  CCTK_REAL const p1o2dz = 0.5*INV(dz);
+  CCTK_REAL const p1o4dx2 = 0.25*INV(SQR(dx));
+  CCTK_REAL const p1o4dxdy = 0.25*INV(dx)*INV(dy);
+  CCTK_REAL const p1o4dxdz = 0.25*INV(dx)*INV(dz);
+  CCTK_REAL const p1o4dy2 = 0.25*INV(SQR(dy));
+  CCTK_REAL const p1o4dydz = 0.25*INV(dy)*INV(dz);
+  CCTK_REAL const p1o4dz2 = 0.25*INV(SQR(dz));
+  CCTK_REAL const p1odx = INV(dx);
+  CCTK_REAL const p1odx2 = INV(SQR(dx));
+  CCTK_REAL const p1odxdydz = INV(dx)*INV(dy)*INV(dz);
+  CCTK_REAL const p1ody = INV(dy);
+  CCTK_REAL const p1ody2 = INV(SQR(dy));
+  CCTK_REAL const p1odz = INV(dz);
+  CCTK_REAL const p1odz2 = INV(SQR(dz));
+  CCTK_REAL const pm1o12dx2 = -0.0833333333333333333333333333333*INV(SQR(dx));
+  CCTK_REAL const pm1o12dy2 = -0.0833333333333333333333333333333*INV(SQR(dy));
+  CCTK_REAL const pm1o12dz2 = -0.0833333333333333333333333333333*INV(SQR(dz));
+  CCTK_REAL const pm1o2dx = -0.5*INV(dx);
+  CCTK_REAL const pm1o2dy = -0.5*INV(dy);
+  CCTK_REAL const pm1o2dz = -0.5*INV(dz);
+  
+  /* Loop over the grid points */
+  for (k = min[2]; k < max[2]; k++)
+  {
+    for (j = min[1]; j < max[1]; j++)
+    {
+      for (i = min[0]; i < max[0]; i++)
+      {
+         int  const  index  =  CCTK_GFINDEX3D(cctkGH,i,j,k) ;
+        
+        /* Assign local copies of grid functions */
+        
+        CCTK_REAL rL = r[index];
+        
+        
+        /* Include user supplied include files */
+        
+        /* Precompute derivatives */
+        
+        /* Calculate temporaries and grid functions */
+        CCTK_REAL rEps = pow(1.e-24 + QAD(rL),0.25);
+        
+        CCTK_REAL phiExactL = (-(CUB(-rL + cctk_time + 
+          ToReal(t0))*exp(-(INV(SQR(ToReal(nSigma)))*SQR(-rL + cctk_time + 
+          ToReal(t0))))) + CUB(rL + cctk_time + 
+          ToReal(t0))*exp(-(INV(SQR(ToReal(nSigma)))*SQR(rL + cctk_time + 
+          ToReal(t0)))))*INV(rEps);
+        
+        CCTK_REAL piExactL = 
+          INV(rEps)*(INV(SQR(ToReal(nSigma)))*(2*exp(-(INV(SQR(ToReal(nSigma)))*SQR(-rL 
+          + cctk_time + ToReal(t0))))*QAD(-rL + cctk_time + ToReal(t0)) - 
+          2*exp(-(INV(SQR(ToReal(nSigma)))*SQR(rL + cctk_time + ToReal(t0))))*QAD(rL + 
+          cctk_time + ToReal(t0))) - 3*exp(-(INV(SQR(ToReal(nSigma)))*SQR(-rL + cctk_time + 
+          ToReal(t0))))*SQR(-rL + cctk_time + ToReal(t0)) + 
+          3*exp(-(INV(SQR(ToReal(nSigma)))*SQR(rL + cctk_time + ToReal(t0))))*SQR(rL + 
+          cctk_time + ToReal(t0)));
+        
+        /* Copy local copies back to grid functions */
+        phiExact[index] = phiExactL;
+        piExact[index] = piExactL;
+      }
+    }
+  }
+}
+
+extern "C" void wave_exact_gaussian(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  GenericFD_LoopOverEverything(cctkGH, &wave_exact_gaussian_Body);
+}
diff --git a/Examples/Wave/src/wave_exact_sine.cc b/Examples/Wave/src/wave_exact_sine.cc
new file mode 100644
index 0000000..96e788a
--- /dev/null
+++ b/Examples/Wave/src/wave_exact_sine.cc
@@ -0,0 +1,150 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+
+static void wave_exact_sine_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const min[3], int const max[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Declare the variables used for looping over grid points */
+  CCTK_INT i, j, k;
+  // CCTK_INT index = INITVALUE;
+  
+  /* Declare finite differencing variables */
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering wave_exact_sine_Body");
+  }
+  
+  if (cctk_iteration % wave_exact_sine_calc_every != wave_exact_sine_calc_offset)
+  {
+    return;
+  }
+  
+  const char *groups[] = {"Wave::exact","grid::coordinates"};
+  GenericFD_AssertGroupStorage(cctkGH, "wave_exact_sine", 2, groups);
+  
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  CCTK_REAL const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL const dxi = INV(dx);
+  CCTK_REAL const dyi = INV(dy);
+  CCTK_REAL const dzi = INV(dz);
+  CCTK_REAL const khalf = 0.5;
+  CCTK_REAL const kthird = 1/3.0;
+  CCTK_REAL const ktwothird = 2.0/3.0;
+  CCTK_REAL const kfourthird = 4.0/3.0;
+  CCTK_REAL const keightthird = 8.0/3.0;
+  CCTK_REAL const hdxi = 0.5 * dxi;
+  CCTK_REAL const hdyi = 0.5 * dyi;
+  CCTK_REAL const hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL const p1o1 = 1;
+  CCTK_REAL const p1o12dx = 0.0833333333333333333333333333333*INV(dx);
+  CCTK_REAL const p1o12dy = 0.0833333333333333333333333333333*INV(dy);
+  CCTK_REAL const p1o12dz = 0.0833333333333333333333333333333*INV(dz);
+  CCTK_REAL const p1o144dxdy = 0.00694444444444444444444444444444*INV(dx)*INV(dy);
+  CCTK_REAL const p1o144dxdz = 0.00694444444444444444444444444444*INV(dx)*INV(dz);
+  CCTK_REAL const p1o144dydz = 0.00694444444444444444444444444444*INV(dy)*INV(dz);
+  CCTK_REAL const p1o2dx = 0.5*INV(dx);
+  CCTK_REAL const p1o2dy = 0.5*INV(dy);
+  CCTK_REAL const p1o2dz = 0.5*INV(dz);
+  CCTK_REAL const p1o4dx2 = 0.25*INV(SQR(dx));
+  CCTK_REAL const p1o4dxdy = 0.25*INV(dx)*INV(dy);
+  CCTK_REAL const p1o4dxdz = 0.25*INV(dx)*INV(dz);
+  CCTK_REAL const p1o4dy2 = 0.25*INV(SQR(dy));
+  CCTK_REAL const p1o4dydz = 0.25*INV(dy)*INV(dz);
+  CCTK_REAL const p1o4dz2 = 0.25*INV(SQR(dz));
+  CCTK_REAL const p1odx = INV(dx);
+  CCTK_REAL const p1odx2 = INV(SQR(dx));
+  CCTK_REAL const p1odxdydz = INV(dx)*INV(dy)*INV(dz);
+  CCTK_REAL const p1ody = INV(dy);
+  CCTK_REAL const p1ody2 = INV(SQR(dy));
+  CCTK_REAL const p1odz = INV(dz);
+  CCTK_REAL const p1odz2 = INV(SQR(dz));
+  CCTK_REAL const pm1o12dx2 = -0.0833333333333333333333333333333*INV(SQR(dx));
+  CCTK_REAL const pm1o12dy2 = -0.0833333333333333333333333333333*INV(SQR(dy));
+  CCTK_REAL const pm1o12dz2 = -0.0833333333333333333333333333333*INV(SQR(dz));
+  CCTK_REAL const pm1o2dx = -0.5*INV(dx);
+  CCTK_REAL const pm1o2dy = -0.5*INV(dy);
+  CCTK_REAL const pm1o2dz = -0.5*INV(dz);
+  
+  /* Loop over the grid points */
+  for (k = min[2]; k < max[2]; k++)
+  {
+    for (j = min[1]; j < max[1]; j++)
+    {
+      for (i = min[0]; i < max[0]; i++)
+      {
+         int  const  index  =  CCTK_GFINDEX3D(cctkGH,i,j,k) ;
+        
+        /* Assign local copies of grid functions */
+        
+        CCTK_REAL xL = x[index];
+        CCTK_REAL yL = y[index];
+        CCTK_REAL zL = z[index];
+        
+        
+        /* Include user supplied include files */
+        
+        /* Precompute derivatives */
+        
+        /* Calculate temporaries and grid functions */
+        CCTK_REAL piconst = 3.1415926535897932385;
+        
+        CCTK_REAL phiExactL = 
+          Sin(2*piconst*INV(ToReal(periodicity))*(-(cctk_time*sqrt(SQR(ToReal(n1)) + 
+          SQR(ToReal(n2)) + SQR(ToReal(n3)))) + xL*ToReal(n1) + yL*ToReal(n2) + 
+          zL*ToReal(n3)))*ToReal(amplitude);
+        
+        CCTK_REAL piExactL = 
+          -2*piconst*Cos(2*piconst*INV(ToReal(periodicity))*(-(cctk_time*sqrt(SQR(ToReal(n1)) 
+          + SQR(ToReal(n2)) + SQR(ToReal(n3)))) + xL*ToReal(n1) + yL*ToReal(n2) + 
+          zL*ToReal(n3)))*INV(ToReal(periodicity))*sqrt(SQR(ToReal(n1)) + 
+          SQR(ToReal(n2)) + SQR(ToReal(n3)))*ToReal(amplitude);
+        
+        /* Copy local copies back to grid functions */
+        phiExact[index] = phiExactL;
+        piExact[index] = piExactL;
+      }
+    }
+  }
+}
+
+extern "C" void wave_exact_sine(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  GenericFD_LoopOverEverything(cctkGH, &wave_exact_sine_Body);
+}
diff --git a/Examples/Wave/src/wave_import_exact.cc b/Examples/Wave/src/wave_import_exact.cc
new file mode 100644
index 0000000..8263c88
--- /dev/null
+++ b/Examples/Wave/src/wave_import_exact.cc
@@ -0,0 +1,140 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+
+static void wave_import_exact_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const min[3], int const max[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Declare the variables used for looping over grid points */
+  CCTK_INT i, j, k;
+  // CCTK_INT index = INITVALUE;
+  
+  /* Declare finite differencing variables */
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering wave_import_exact_Body");
+  }
+  
+  if (cctk_iteration % wave_import_exact_calc_every != wave_import_exact_calc_offset)
+  {
+    return;
+  }
+  
+  const char *groups[] = {"Wave::evolved","Wave::exact"};
+  GenericFD_AssertGroupStorage(cctkGH, "wave_import_exact", 2, groups);
+  
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  CCTK_REAL const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL const dxi = INV(dx);
+  CCTK_REAL const dyi = INV(dy);
+  CCTK_REAL const dzi = INV(dz);
+  CCTK_REAL const khalf = 0.5;
+  CCTK_REAL const kthird = 1/3.0;
+  CCTK_REAL const ktwothird = 2.0/3.0;
+  CCTK_REAL const kfourthird = 4.0/3.0;
+  CCTK_REAL const keightthird = 8.0/3.0;
+  CCTK_REAL const hdxi = 0.5 * dxi;
+  CCTK_REAL const hdyi = 0.5 * dyi;
+  CCTK_REAL const hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL const p1o1 = 1;
+  CCTK_REAL const p1o12dx = 0.0833333333333333333333333333333*INV(dx);
+  CCTK_REAL const p1o12dy = 0.0833333333333333333333333333333*INV(dy);
+  CCTK_REAL const p1o12dz = 0.0833333333333333333333333333333*INV(dz);
+  CCTK_REAL const p1o144dxdy = 0.00694444444444444444444444444444*INV(dx)*INV(dy);
+  CCTK_REAL const p1o144dxdz = 0.00694444444444444444444444444444*INV(dx)*INV(dz);
+  CCTK_REAL const p1o144dydz = 0.00694444444444444444444444444444*INV(dy)*INV(dz);
+  CCTK_REAL const p1o2dx = 0.5*INV(dx);
+  CCTK_REAL const p1o2dy = 0.5*INV(dy);
+  CCTK_REAL const p1o2dz = 0.5*INV(dz);
+  CCTK_REAL const p1o4dx2 = 0.25*INV(SQR(dx));
+  CCTK_REAL const p1o4dxdy = 0.25*INV(dx)*INV(dy);
+  CCTK_REAL const p1o4dxdz = 0.25*INV(dx)*INV(dz);
+  CCTK_REAL const p1o4dy2 = 0.25*INV(SQR(dy));
+  CCTK_REAL const p1o4dydz = 0.25*INV(dy)*INV(dz);
+  CCTK_REAL const p1o4dz2 = 0.25*INV(SQR(dz));
+  CCTK_REAL const p1odx = INV(dx);
+  CCTK_REAL const p1odx2 = INV(SQR(dx));
+  CCTK_REAL const p1odxdydz = INV(dx)*INV(dy)*INV(dz);
+  CCTK_REAL const p1ody = INV(dy);
+  CCTK_REAL const p1ody2 = INV(SQR(dy));
+  CCTK_REAL const p1odz = INV(dz);
+  CCTK_REAL const p1odz2 = INV(SQR(dz));
+  CCTK_REAL const pm1o12dx2 = -0.0833333333333333333333333333333*INV(SQR(dx));
+  CCTK_REAL const pm1o12dy2 = -0.0833333333333333333333333333333*INV(SQR(dy));
+  CCTK_REAL const pm1o12dz2 = -0.0833333333333333333333333333333*INV(SQR(dz));
+  CCTK_REAL const pm1o2dx = -0.5*INV(dx);
+  CCTK_REAL const pm1o2dy = -0.5*INV(dy);
+  CCTK_REAL const pm1o2dz = -0.5*INV(dz);
+  
+  /* Loop over the grid points */
+  for (k = min[2]; k < max[2]; k++)
+  {
+    for (j = min[1]; j < max[1]; j++)
+    {
+      for (i = min[0]; i < max[0]; i++)
+      {
+         int  const  index  =  CCTK_GFINDEX3D(cctkGH,i,j,k) ;
+        
+        /* Assign local copies of grid functions */
+        
+        CCTK_REAL phiExactL = phiExact[index];
+        CCTK_REAL piExactL = piExact[index];
+        
+        
+        /* Include user supplied include files */
+        
+        /* Precompute derivatives */
+        
+        /* Calculate temporaries and grid functions */
+        CCTK_REAL phiL = phiExactL;
+        
+        CCTK_REAL piL = piExactL;
+        
+        /* Copy local copies back to grid functions */
+        phi[index] = phiL;
+        pi[index] = piL;
+      }
+    }
+  }
+}
+
+extern "C" void wave_import_exact(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  GenericFD_LoopOverEverything(cctkGH, &wave_import_exact_Body);
+}