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/*@@
   @routine    WriteGF
   @date       Tue Apr  1 16:45:35 1997
   @author     Paul Walker
   @desc 
   Dumps the "0D" data.
   @enddesc 
   @calls    
   @calledby   
   @history
   @hauthor Thomas Radke @hdate 17 Mar 1999
   @hdesc included "cctk_Comm.h" to overload CCTK_GetMyProc() properly
   @hendhistory
@@*/

#include <stdio.h>

#include "cctk.h"
#include "cctk_parameters.h"
#include "iobasicGH.h"

void IOBasic_WriteGF (cGH *GH, int index, const char *alias)
{
  DECLARE_CCTK_PARAMETERS
  CCTK_REAL tt[1];
  int i;
  int reduce_handle;
  char *openmode;
  FILE *file[4];

  /* Open the file (we write only on proc0) */
  if (CCTK_MyProc (GH) == 0) {

    char fname[256];
    int  handle;
    iobasicGH *myGH;

    myGH = (iobasicGH *) GH->extensions [CCTK_GHExtensionHandle ("IOBasic")];

    /* see if output files for this alias name were already created */
    if (GetNamedData (myGH->filenameListScalar, alias) == NULL) {
      /* just store a non-NULL pointer in database */
      StoreNamedData (&myGH->filenameListScalar, alias, (void *) 1);
      openmode = "w";
    } else
      openmode = "a";

    sprintf (fname, "%s/%s_max.tl", myGH->outdirScalar, alias);
    file[0] = fopen(fname,openmode);

    sprintf(fname,"%s/%s_min.tl", myGH->outdirScalar, alias);
    file[1] = fopen(fname,openmode);

    sprintf(fname,"%s/%s_nm1.tl", myGH->outdirScalar, alias);
    file[2] = fopen(fname,openmode);

    sprintf(fname,"%s/%s_nm2.tl", myGH->outdirScalar, alias);
    file[3] = fopen(fname,openmode);

    if (*openmode == 'w') {
      char title_start_char;

      if (CCTK_Equals(outScalar_style,"gnuplot")) 
        title_start_char = '#';
      else {
        if (! CCTK_Equals(outScalar_style,"xgraph"))
          CCTK_WARN(3,"Don't understand outScalar_style ... using xgraph");
        title_start_char = 34;
      }

      fprintf (file[0],"%c%s max v time\n",title_start_char,alias);
      fprintf (file[1],"%c%s min v time\n",title_start_char,alias);
      fprintf (file[2],"%c%s norm1 v time\n",title_start_char,alias);
      fprintf (file[3],"%c%s norm2 v time\n",title_start_char,alias);
    }

  }

  reduce_handle = CCTK_ReductionHandle("maximum");
  if (reduce_handle > -1)
  {
    CCTK_Reduce(GH,-1,reduce_handle,1,CCTK_VARIABLE_REAL,tt,1,index);
    if (CCTK_MyProc(GH) == 0)
      fprintf(file[0],"%f %25.13f\n",GH->cctk_time,tt[0]);
  }

  reduce_handle = CCTK_ReductionHandle("minimum");
  if (reduce_handle > -1)
  {
    CCTK_Reduce(GH,-1,reduce_handle,1,CCTK_VARIABLE_REAL,tt,1,index);
    if (CCTK_MyProc(GH) == 0)
      fprintf(file[1],"%f %25.13f\n",GH->cctk_time,tt[0]);
  }

  reduce_handle = CCTK_ReductionHandle("norm1");
  if (reduce_handle > -1)
  {
    CCTK_Reduce(GH,-1,reduce_handle,1,CCTK_VARIABLE_REAL,tt,1,index);
    if (CCTK_MyProc(GH) == 0)
      fprintf(file[2],"%f %25.13f\n",GH->cctk_time,tt[0]);
  }

  reduce_handle = CCTK_ReductionHandle("norm2");
  if (reduce_handle > -1)
  {
    CCTK_Reduce(GH,-1,reduce_handle,1,CCTK_VARIABLE_REAL,tt,1,index);
    if (CCTK_MyProc(GH) == 0)
      fprintf(file[3],"%f %25.13f\n",GH->cctk_time,tt[0]);
  }

  if (CCTK_MyProc (GH) == 0)
    for (i=0;i<4;i++)
      fclose(file[i]);
}