GEO_abs_limit_check.c

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/* file: GEO_abs_limit_check.c */
 
#include "GEO_geo.h"
#include "GEO_validation.h"
 
int GEO_abs_limit_check(
    double data_samples[],
    int const number_of_samples,
    double data_limits[2],
    int sample_flags[]
    )
{
/*
!C*****************************************************************************
!Description:   
        Routine in Input group of the Level-1A geolocation
                software to validate a set of data samples against 
        absolute limits.  Flags set to BAD_DATA for all samples
        not within limits.
 
!Input Parameters:
                double data_samples[] - array of input data samples
        int number_of_samples - number of samples to check
        double data_limits[2] - lower and upper limits
 
!Output Parameters:
                int sample_flags[] - array of validation flags
 
Return parameter:
                int err_stat - error status
 
Global variables:
        None
 
Call functions:
        None
 
!Revision History:
$Log: GEO_abs_limit_check.c,v $
Revision 1.6  1997/07/21 16:24:34  kuyper
Baselined Version 1
 
 * Revision 1.6  1997/03/26  17:33:13  fhliang
 * Initial revision of SDST delivery of GEO_abs_limit_check.c.
 *
Revision 1.5  1996/07/29 14:45:51  kuyper
Used BAD_DATA for flags, rather than FAIL (same value).
 
 * Revision 1.4  1996/07/24  20:53:10  kuyper
 * Declared number_of_samples const.
 *
Revision 1.3  1996/07/23 22:21:52  kuyper
Inserted required '!' in comments.
 
Revision 1.2  1996/07/18 15:28:46  kuyper
Added self-checking include file.
 
                6/14/95
                Frederick S. Patt (patt@modis-xl.gsfc.nasa.gov)
                Finished coding.
 
!Team-unique Header:
                This software is developed by the MODIS Science Data Support
                Team for the National Aeronautics and Space Administration,
                Goddard Space Flight Center, under contract NAS5-32373.
 
!END*************************************************************************
*/
 
  /* Local variable declarations */
 
  int num_valid = 0; /* number of valid data samples found */
  int i = 0; /* loop index */
 
  /* Begin program logic */
  /* Loop through samples */
  for (i = 0; i < number_of_samples; i++) {
 
    /* Check samples against limits */
    if ((data_samples[i] < data_limits[0]) || 
    (data_samples[i] > data_limits[1])) {
 
      sample_flags[i] = BAD_DATA; 
    }
    else {
      num_valid += 1;
    }
  }
 
  /* If no valid samples, return FAIL */
  if (num_valid == 0) 
    return FAIL;
 
  return SUCCESS;
}