+static const char *
+getLongitudeString ()
+{
+ static SGConstPropertyNode_ptr n = fgGetNode("/position/longitude-deg", true);
+ static SGConstPropertyNode_ptr f = fgGetNode("/sim/lon-lat-format", true);
+ static char buf[32];
+ double d = n->getDoubleValue();
+ int format = f->getIntValue();
+ char c = d < 0.0 ? 'W' : 'E';
+
+ if (format == 0) {
+ snprintf(buf, 32, "%3.6f%c", d, c);
+
+ } else if (format == 1) {
+ // dd mm.mmm' (DMM-Format) -- uses a round-off factor tailored to the
+ // required precision of the minutes field (three decimal places),
+ // preventing minute values of 60.
+ double deg = fabs(d) + 5.0E-4 / 60.0;
+ double min = fabs(deg - int(deg)) * 60.0 - 4.999E-4;
+ snprintf(buf, 32, "%d*%06.3f%c", int(d < 0.0 ? -deg : deg), min, c);
+
+ } else {
+ // mm'ss.s'' (DMS-Format) -- uses a round-off factor tailored to the
+ // required precision of the seconds field (one decimal place),
+ // preventing second values of 60.
+ double deg = fabs(d) + 0.05 / 3600.0;
+ double min = (deg - int(deg)) * 60.0;
+ double sec = (min - int(min)) * 60.0 - 0.049;
+ snprintf(buf, 32, "%d*%02d %04.1f%c", int(d < 0.0 ? -deg : deg),
+ int(min), fabs(sec), c);
+ }
+ buf[31] = '\0';
+ return buf;
+}
+
+static const char *
+getLatitudeString ()
+{
+ static SGConstPropertyNode_ptr n = fgGetNode("/position/latitude-deg", true);
+ static SGConstPropertyNode_ptr f = fgGetNode("/sim/lon-lat-format", true);
+ static char buf[32];
+ double d = n->getDoubleValue();
+ int format = f->getIntValue();
+ char c = d < 0.0 ? 'S' : 'N';
+
+ if (format == 0) {
+ snprintf(buf, 32, "%3.6f%c", d, c);
+
+ } else if (format == 1) {
+ double deg = fabs(d) + 5.0E-4 / 60.0;
+ double min = fabs(deg - int(deg)) * 60.0 - 4.999E-4;
+ snprintf(buf, 32, "%d*%06.3f%c", int(d < 0.0 ? -deg : deg), min, c);
+
+ } else {
+ double deg = fabs(d) + 0.05 / 3600.0;
+ double min = (deg - int(deg)) * 60.0;
+ double sec = (min - int(min)) * 60.0 - 0.049;
+ snprintf(buf, 32, "%d*%02d %04.1f%c", int(d < 0.0 ? -deg : deg),
+ int(min), fabs(sec), c);
+ }
+ buf[31] = '\0';
+ return buf;
+}
+
+
+