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/*@@
@file CoordinateStuff.c
@date
@author Cactus Maintainers
@desc
Extra functions for coordinate information
@enddesc
@version $Header$
@@*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "cctk.h"
static const char *rcsid = "$Header$";
CCTK_FILEVERSION(CactusWave_WaveBinarySource_CoordinateStuff_c)
/********************************************************************
********************* Local Data Types ***********************
********************************************************************/
/********************************************************************
********************* Local Routine Prototypes *********************
********************************************************************/
/********************************************************************
********************* Local Data *****************************
********************************************************************/
/********************************************************************
***************** External Routines Prototype ********************
********************************************************************/
int IndexCeilC(cGH *GH, CCTK_REAL coord_value, int d);
int IndexFloorC(cGH *GH, CCTK_REAL coord_value, int d);
/********************************************************************
********************** External Routines ************************
********************************************************************/
/*@@
@routine IndexFloorC
@date Fri Jan 7 10:34:29 2000
@author Gerd Lanfermann
@desc
For a given physical, global coordinate, IndexFloor returns
the closest lower grid index *locally* in the direction d,
this includes ghostzones;
Other return values:
-1 : gridindex not on this gridpatch
-2 : illegal dimension
-3 : coordinate value outside grid
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
int IndexFloorC(cGH *GH, CCTK_REAL coord_value, int d)
{
int index_low;
CCTK_REAL cmin,cmax;
if (d>=0 || d<3)
{
CCTK_CoordRange(GH,&cmin,&cmax, d+1, NULL, "cart3d");
if ((coord_value<cmin)||(coord_value>cmax))
{
CCTK_VWarn(2,__LINE__,__FILE__,CCTK_THORNSTRING,
"IndexFloor: coordinate value outside grid [%f,%f]: %f \n",
cmin, cmax, coord_value);
index_low = -3;
}
else
{
index_low = floor((coord_value-cmin)/ GH->cctk_delta_space[d])
- GH->cctk_lbnd[d];
if (index_low<0 || index_low>=GH->cctk_lsh[d])
{
index_low = -1;
}
}
}
else
{
CCTK_WARN(1,"IndexFloorC: dimension is not valid");
index_low = -2;
}
return(index_low);
}
/*@@
@routine IndexCeilC
@date Fri Jan 7 10:34:29 2000
@author Gerd Lanfermann
@desc
For a given physical, global coordinate, IndexCeil returns
the closest upper grid index *locally* in the direction d
including ghostzones.
Other return values:
-1 : grid index not on this gridpatch
-2 : illegal dimension
-3 : coordinate value outside grid
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
int IndexCeilC(cGH *GH, CCTK_REAL coord_value, int d)
{
int index_up;
CCTK_REAL cmin,cmax;
if (d>=0 || d<3)
{
CCTK_CoordRange(GH,&cmin,&cmax, d+1, NULL, "cart3d");
if ((coord_value<cmin)||(coord_value>cmax))
{
CCTK_VWarn(2,__LINE__,__FILE__,CCTK_THORNSTRING,
"IndexCeil: coordinate value outside grid [%f,%f]: %f \n",
cmin, cmax, coord_value);
index_up = -3;
}
else
{
index_up = ceil((coord_value-cmin)/ GH->cctk_delta_space[d])
-GH->cctk_lbnd[d];
if (index_up<0 || index_up>=GH->cctk_lsh[d])
{
index_up = -1;
}
}
}
else
{
CCTK_WARN(1,"IndexCeilC: dimension is not valid");
index_up = -2;
}
return(index_up);
}
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