gsm: add gsm0502_fn2ccch_block()
This API is useful for checking whether a Downlink CCCH block belongs
to PCH or AGCH. We need this API in osmo-bts.git and osmocom-bb.git.
Change-Id: I8cbd31226754e95887358ed83a928e2f567f4cf3
Related: OS#5500
diff --git a/include/osmocom/gsm/gsm0502.h b/include/osmocom/gsm/gsm0502.h
index ac697d9..43ab0b8 100644
--- a/include/osmocom/gsm/gsm0502.h
+++ b/include/osmocom/gsm/gsm0502.h
@@ -105,3 +105,5 @@
uint16_t gsm0502_hop_seq_gen(const struct gsm_time *t,
uint8_t hsn, uint8_t maio,
size_t n, const uint16_t *ma);
+
+int gsm0502_fn2ccch_block(uint32_t fn);