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authorSylvain Munaut2010-04-27 21:48:40 +0200
committerSylvain Munaut2010-04-27 21:48:40 +0200
commit221030fc85c9e0232eb0adcf1142ac1c48c8778a (patch)
tree850c9a5fd5659f5b8f18dfd94a5b467a0715c959 /include
parentgsm0808: Port asiggnment_complete msg creation to libosmocore. (diff)
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gsm_utils: Just add some constant and timekeeping utils
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Diffstat (limited to 'include')
-rw-r--r--include/osmocore/gsm_utils.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/osmocore/gsm_utils.h b/include/osmocore/gsm_utils.h
index c87e967..195e865 100644
--- a/include/osmocore/gsm_utils.h
+++ b/include/osmocore/gsm_utils.h
@@ -27,6 +27,13 @@
#include <stdint.h>
+#define ADD_MODULO(sum, delta, modulo) do { \
+ if ((sum += delta) >= modulo) \
+ sum -= modulo; \
+ } while (0)
+
+#define GSM_MAX_FN (26*51*2048)
+
struct gsm_time {
uint32_t fn; /* FN count */
uint16_t t1; /* FN div (26*51) */