# include <config.h>
#endif
-#include "navradio.hxx"
-
#include <sstream>
#include <cstring>
#include <Navaids/navlist.hxx>
#include <Main/util.hxx>
+#include "navradio.hxx"
+
using std::string;
// General-purpose sawtooth function. Graph looks like this:
alt_freq_node = subnode->getChild("standby-mhz", 0, true);
fmt_freq_node = subnode->getChild("selected-mhz-fmt", 0, true);
fmt_alt_freq_node = subnode->getChild("standby-mhz-fmt", 0, true);
+ is_loc_freq_node = subnode->getChild("is-localizer-frequency", 0, true );
// radials
subnode = node->getChild("radials", 0, true);
return FG_LOC_DEFAULT_RANGE;
}
+// Frequencies with odd 100kHz numbers in the range from 108.00 - 111.95
+// are LOC/GS (ILS) frequency pairs
+// (108.00, 108.05, 108.20, 108.25.. =VOR)
+// (108.10, 108.15, 108.30, 108.35.. =ILS)
+static inline bool IsLocalizerFrequency( double f )
+{
+ if( f < 108.0 || f >= 112.00 ) return false;
+ return (((SGMiscd::roundToInt(f * 100.0) % 100)/10) % 2) != 0;
+}
+
//////////////////////////////////////////////////////////////////////////
// Update the various nav values based on position and valid tuned in navs
fmt_freq_node->setStringValue(tmp);
sprintf( tmp, "%.2f", alt_freq_node->getDoubleValue() );
fmt_alt_freq_node->setStringValue(tmp);
+ is_loc_freq_node->setBoolValue( IsLocalizerFrequency( freq_node->getDoubleValue() ));
if (power_btn_node->getBoolValue()
&& (bus_power_node->getDoubleValue() > 1.0)