gsm_utils: Just add some constant and timekeeping utils

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
2010-04-27 21:48:40 +02:00 · 2010-04-27 21:48:40 +02:00 · 221030fc85
parent ba6172a7fd
commit 221030fc85
1 changed files with 7 additions and 0 deletions
--- 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) */