From 5977ec1da288579da006e0bf1d72b9e69666cb4e Mon Sep 17 00:00:00 2001
From: Tomoji Takasu <ttaka@yk.rim.or.jp>
Date: Tue, 30 Jan 2018 11:03:44 +0900
Subject: [PATCH] fix problem on half-cycle slip handling.

---
 src/rcv/ublox.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/rcv/ublox.c b/src/rcv/ublox.c
index ad6b4e30d..4b521cab4 100644
--- a/src/rcv/ublox.c
+++ b/src/rcv/ublox.c
@@ -320,7 +320,11 @@ static int decode_rxmrawx(raw_t *raw)
             
             /* LLI: bit1=loss-of-lock,bit2=half-cycle-invalid */
             raw->obs.data[n].LLI[0]|=slip?LLI_SLIP:0;
+#if 0
             raw->obs.data[n].LLI[0]|=halfc?LLI_HALFA:0; /* half-cycle subtraced */
+#else
+            if (halfc!=raw->halfc[sat-1][0]) raw->obs.data[n].LLI[0]|=LLI_SLIP;
+#endif
             raw->obs.data[n].LLI[0]|=halfv?0:LLI_HALFC;
             raw->lockt[sat-1][0]=lockt;
             raw->halfc[sat-1][0]=halfc;