#include "csf.h"

#include "csfimpl.h"

/* get maximum cell value

 * RgetMaxVal returns the value stored in

 * the header as the maximum value. 

 * If the minMaxStatus is MM_WRONGVALUE

 * then a missing value is returned.

 * returns 0 if argument maxVal is returned with a missing

 * value, nonzero if not.

 *

 * example

 * .so examples/csfstat.tr

 */

int RgetMaxVal(

  const MAP *map, /* map handle */

  void *maxVal)   /* write-only. Maximum value or missing value */

{

  /* use buffer that can hold largest 

   * cell representation

   */

  CSF_VAR_TYPE buf_1;

  void *buf = (void *)(&buf_1);

  CHECKHANDLE(map);

  CsfGetVarType(buf, &(map->raster.maxVal), RgetCellRepr(map));

  map->file2app((size_t)1, buf);

  if (map->minMaxStatus == MM_WRONGVALUE)

    SetMV(map, buf);

  CsfGetVarType(maxVal, buf, map->appCR);

  return((!IsMV(map,maxVal)) &&

    map->minMaxStatus!=MM_WRONGVALUE);

}