utils.c

#include "meta_ext.h"

double rational_to_double(Rational number) {
  return number.denominator == 0 ? 0.0 : (double)number.numerator / number.denominator;
}

double convert_to_decimal(Rational *coords, char ref) {
  if(!coords)
    return 0;
  double deg = rational_to_double(coords[0]);
  double min = rational_to_double(coords[1]);
  double sec = rational_to_double(coords[2]);

  double result = deg + min / 60.0 + sec / 3600.0;
  if (ref == 'S' || ref == 'W')
    result *= -1.0;
  return result;
}

GPS_Coord convert_coord(Rational *coords) {
  GPS_Coord result;
  result.degrees = coords[0];
  result.minutes = coords[1];
  result.seconds = coords[2];
  return result;
}