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| author | Eric S. Raymond <esr@thyrsus.com> | 2009-09-30 22:03:11 +0000 |
|---|---|---|
| committer | Eric S. Raymond <esr@thyrsus.com> | 2009-09-30 22:03:11 +0000 |
| commit | 97b9548cff261e13a5b592d31add94631ff4dbc9 (patch) | |
| tree | f46a1c984d841d3d2d8d83836d01db57d3e8ccf9 /driver_zodiac.c | |
| parent | b9f18fea09961f5e7476130a67e4e89379e12571 (diff) | |
| download | gpsd-97b9548cff261e13a5b592d31add94631ff4dbc9.tar.gz | |
Fix computation of epx and epy from eph.
Factor of 1/sqrt(2) has to be applied (on the assumption that epx and
epy are equal).
Diffstat (limited to 'driver_zodiac.c')
| -rw-r--r-- | driver_zodiac.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/driver_zodiac.c b/driver_zodiac.c index 86319365..f7c45b99 100644 --- a/driver_zodiac.c +++ b/driver_zodiac.c @@ -188,7 +188,7 @@ static gps_mask_t handle1000(struct gps_device_t *session) * The manual says these are 1-sigma. Device reports only eph, circular * error; no harm in assigning it to both x and y components. */ - session->gpsdata.fix.epx = session->gpsdata.fix.epy = (int)getzlong(40) * 1e-2 * GPSD_CONFIDENCE; + session->gpsdata.fix.epx = session->gpsdata.fix.epy = (int)getzlong(40) * 1e-2 * (1/sqrt(2)) * GPSD_CONFIDENCE; session->gpsdata.fix.epv = (int)getzlong(42) * 1e-2 * GPSD_CONFIDENCE; session->gpsdata.fix.ept = (int)getzlong(44) * 1e-2 * GPSD_CONFIDENCE; session->gpsdata.fix.eps = (int)getzword(46) * 1e-2 * GPSD_CONFIDENCE; |