Use NAN to signal overrange climb/speed.

I see that is what libgpsd_json.c expects.

1 files changed, 8 insertions, 12 deletions

diff --git a/geoid.c b/geoid.c
index e2a5df53..5d708af2 100644
--- a/geoid.c
+++ b/geoid.c
@@ -126,22 +126,18 @@ void ecef_to_wgs84fix(struct gps_fix_t *fix, double *separation,
     fix->climb =
 	vx * cos(phi) * cos(lambda) + vy * cos(phi) * sin(lambda) +
 	vz * sin(phi);
-    /* sanity check the climb, 10,000 m/s max will do */
-    if ( isnan(fix->climb) )
-	fix->climb = 0;
-    else if ( 9999.9 < fix->climb )
-	fix->climb = 9999.9;
+    /* sanity check the climb, 10,000 m/s should be a nice max */
+    if ( 9999.9 < fix->climb )
+	fix->climb = NAN;
     else if ( -9999.9 > fix->speed )
-	fix->climb = -9999.9;
+	fix->climb = NAN;
 
     fix->speed = sqrt(pow(vnorth, 2) + pow(veast, 2));
-    /* sanity check the speed, 10,000 m/s max will do */
-    if ( isnan(fix->speed) )
-	fix->speed = 0;
-    else if ( 9999.9 < fix->speed )
-	fix->speed = 9999.9;
+    /* sanity check the speed, 10,000 m/s should be a nice max */
+    if ( 9999.9 < fix->speed )
+	fix->speed = NAN;
     else if ( -9999.9 > fix->speed )
-	fix->speed = -9999.9;
+	fix->speed = NAN;
 
     heading = atan2(fix_minuz(veast), fix_minuz(vnorth));
     if (heading < 0)