diff options
Diffstat (limited to 'gpsutils.c')
| -rw-r--r-- | gpsutils.c | 50 |
1 files changed, 50 insertions, 0 deletions
@@ -9,6 +9,56 @@ #include "gpsd.h" +void gps_clear_fix(/*@ out @*/struct gps_fix_t *fixp) +/* stuff a fix structure with recognizable out-of-band values */ +{ + fixp->time = NAN; + fixp->mode = MODE_NOT_SEEN; + fixp->track = NAN; + fixp->speed = NAN; + fixp->climb = NAN; + fixp->altitude = NAN; + fixp->ept = NAN; + fixp->eph = NAN; + fixp->epv = NAN; + fixp->epd = NAN; + fixp->eps = NAN; + fixp->epc = NAN; +} + +void gps_merge_fix(/*@ out @*/struct gps_fix_t *to, + gps_mask_t transfer, + /*@ in @*/struct gps_fix_t *from) +/* merge new data into an old fix */ +{ + if ((transfer & TIME_SET)!=0) + to->time = from->time; + if ((transfer & LATLON_SET)!=0) { + to->latitude = from->latitude; + to->longitude = from->longitude; + } + if ((transfer & MODE_SET)!=0) + to->mode = from->mode; + if ((transfer & ALTITUDE_SET)!=0) + to->altitude = from->altitude; + if ((transfer & TRACK_SET)!=0) + to->track = from->track; + if ((transfer & SPEED_SET)!=0) + to->speed = from->speed; + if ((transfer & CLIMB_SET)!=0) + to->climb = from->climb; + if ((transfer & TIMERR_SET)!=0) + to->ept = from->ept; + if ((transfer & HERR_SET)!=0) + to->eph = from->eph; + if ((transfer & VERR_SET)!=0) + to->epv = from->epv; + if ((transfer & SPEEDERR_SET)!=0) + to->eps = from->eps; + if ((transfer & CLIMBERR_SET)!=0) + to->epc = from->epc; +} + double timestamp(void) { struct timeval tv; |