From cc9521292cf24cca824d5573e66dfa7cd8c1eb6f Mon Sep 17 00:00:00 2001
From: yye00 <yye00@daab82bb-f315-4ad1-b6d0-9353ff8b6e27>
Date: Fri, 29 Apr 2005 21:48:33 +0000
Subject: accidentally wiped the file with a bad substitution

git-svn-id: http://svn.cactuscode.org/arrangements/CactusWave/WaveToyFreeF90/trunk@77 daab82bb-f315-4ad1-b6d0-9353ff8b6e27
---
 src/InitSymBound.F90 |  39 ++++++++++++++
 src/Startup.F90      |  23 ++++++++
 src/WaveToy.F90      | 148 +++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 210 insertions(+)

diff --git a/src/InitSymBound.F90 b/src/InitSymBound.F90
index e69de29..8822a73 100644
--- a/src/InitSymBound.F90
+++ b/src/InitSymBound.F90
@@ -0,0 +1,39 @@
+ /*@@
+   @file    InitSymBound.F90
+   @date    
+   @author  Gabrielle Allen
+   @desc
+            Sets the symmetries across the coordinate axes
+   @enddesc
+ @@*/
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+
+ /*@@
+   @routine    WaveToyFreeF90_InitSymBound
+   @date      
+   @author     Gabrielle Allen
+   @desc 
+               Sets the symmetries for Wave Toy
+   @enddesc 
+   @calls     
+   @calledby   
+   @history 
+ 
+   @endhistory 
+
+@@*/
+
+subroutine WaveToyFreeF90_InitSymBound(CCTK_ARGUMENTS)
+  
+  implicit none
+  
+  DECLARE_CCTK_ARGUMENTS 
+
+  INTEGER :: ierr  
+  INTEGER, DIMENSION(3) :: sym = 1
+  
+  call SetCartSymVN(ierr, cctkGH, sym, 'wavetoy::phi')
+  
+end subroutine WaveToyFreeF90_InitSymbound
diff --git a/src/Startup.F90 b/src/Startup.F90
index e69de29..d00270f 100644
--- a/src/Startup.F90
+++ b/src/Startup.F90
@@ -0,0 +1,23 @@
+ /*@@
+   @file      Startup.F90
+   @date      
+   @author    Gabrielle Allen
+   @desc 
+              Register banner 
+   @enddesc 
+   @version $Header$
+ @@*/
+
+#include "cctk.h"
+
+integer function WaveToyFreeF90_Startup ()
+
+  implicit none
+   
+  integer ierr
+  
+  call CCTK_RegisterBanner(ierr, "WaveToyFreeF90: Evolutions of a Scalar Field")
+
+  WaveToyFreeF90_Startup = 0
+
+end function WaveToyFreeF90_Startup
diff --git a/src/WaveToy.F90 b/src/WaveToy.F90
index e69de29..41a650c 100644
--- a/src/WaveToy.F90
+++ b/src/WaveToy.F90
@@ -0,0 +1,148 @@
+ /*@@
+   @file      WaveToy.F90
+   @date      
+   @author    Tom Goodale
+   @desc 
+              Evolution routines for the wave equation solver
+   @enddesc 
+   @version $Header$
+ @@*/
+
+#include "cctk.h"
+#include "cctk_Parameters.h"
+#include "cctk_Arguments.h"
+#include "cctk_Functions.h"
+
+
+ /*@@
+   @routine    WaveToyFreeF90_Evolution
+   @date       
+   @author     Tom Goodale
+   @desc 
+               Evolution for the wave equation
+   @enddesc 
+   @calls      CCTK_SyncGroup, wavetoy_boundaries
+   @calledby   
+   @history 
+ 
+   @endhistory 
+
+@@*/
+
+subroutine WaveToyFreeF90_Evolution(CCTK_ARGUMENTS)
+  
+  implicit none
+  
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_PARAMETERS
+  
+  !  Declare local variables
+  INTEGER   :: i,j,k
+  INTEGER   :: istart, jstart, kstart, iend, jend, kend
+
+  CCTK_REAL :: dx,dy,dz,dt
+  CCTK_REAL :: dx2,dy2,dz2,dt2
+  CCTK_REAL :: dx2i,dy2i,dz2i
+
+  CCTK_REAL :: factor
+  
+  ! Set up shorthands
+  ! -----------------
+  dx = CCTK_DELTA_SPACE(1)
+  dy = CCTK_DELTA_SPACE(2)
+  dz = CCTK_DELTA_SPACE(3)
+  dt = CCTK_DELTA_TIME
+
+  dx2 = dx*dx
+  dy2 = dy*dy
+  dz2 = dz*dz
+  dt2 = dt*dt
+
+  dx2i = 1.0/dx2
+  dy2i = 1.0/dy2
+  dz2i = 1.0/dz2
+
+  istart = 2
+  jstart = 2
+  kstart = 2
+  
+  iend = cctk_lsh(1)-1
+  jend = cctk_lsh(2)-1
+  kend = cctk_lsh(3)-1
+
+  factor = 2*(1 - (dt2)*(dx2i + dy2i + dz2i))
+  
+  ! Do the evolution
+  ! ----------------
+  do k = kstart, kend
+     do j = jstart, jend
+        do i = istart, iend
+           
+           phi(i,j,k) = factor*phi_p(i,j,k) -           &
+                phi_p_p(i,j,k) + (dt2) *                &
+                ((phi_p(i+1,j,k)+phi_p(i-1,j,k))*dx2i   &
+                +(phi_p(i,j+1,k)+phi_p(i,j-1,k))*dy2i   &
+                +(phi_p(i,j,k+1)+phi_p(i,j,k-1))*dz2i)
+           
+        end do
+     end do
+  end do
+     
+end subroutine WaveToyFreeF90_Evolution
+
+
+ /*@@
+   @routine    WaveToyFortran_Boundaries
+   @date       
+   @author     Tom Goodale
+   @desc 
+               Boundary conditions for the wave equation
+   @enddesc 
+   @calls      CartSymGH,FlatBC,RadiativeBC 
+   @calledby   
+   @history 
+ 
+   @endhistory 
+
+@@*/
+
+subroutine WaveToyFreeF90_Boundaries(CCTK_ARGUMENTS)
+  
+  implicit none
+  
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_PARAMETERS
+  DECLARE_CCTK_FUNCTIONS
+
+! Local declarations
+  CCTK_INT :: ierr
+
+  CHARACTER (len=100) :: boundary
+  INTEGER :: length
+
+  ierr = 0
+  
+! The "bound" parameter needs to be converted into a Fortran string.
+  call CCTK_FortranString(length,bound,boundary)
+
+! Apply the outer boundary conditions
+! -----------------------------------
+! Note: In each of the following calls to Boundary_SelectVarForBC,
+! default arguments are used, so an invalid table handle of -1 can
+! be passed
+
+  if (CCTK_EQUALS(bound,"flat") .or. CCTK_EQUALS(bound,"static")    .or. &
+     CCTK_EQUALS(bound,"radiation") .or. CCTK_EQUALS(bound,"robin") .or. &
+     CCTK_EQUALS(bound,"none") ) then
+     ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1,  &
+          "wavetoy::phi", boundary)
+  else if (CCTK_EQUALS(bound,"zero")) then
+     ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1,  &
+          "wavetoy::phi", "Scalar")
+  end if
+
+  if (ierr < 0)  then
+     call CCTK_WARN(0,"WaveToyFreeF90_Boundaries: Error selecting boundary condition")
+  end if
+  
+end subroutine WaveToyFreeF90_Boundaries
-- 
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