raa_prime_encode: rework is_z_seq() to improve performance

Change-Id: I43f4a85102114b51a8f2d9fa8fe3b941800b56fa
---
M src/trau/raa_prime_encode.c
1 file changed, 5 insertions(+), 6 deletions(-)


git pull ssh://gerrit.osmocom.org:29418/libosmo-abis refs/changes/52/38752/1

diff --git a/src/trau/raa_prime_encode.c b/src/trau/raa_prime_encode.c
index 754125f..b2166d8 100644
--- a/src/trau/raa_prime_encode.c
+++ b/src/trau/raa_prime_encode.c
@@ -31,13 +31,12 @@
 
 static bool is_z_seq(const ubit_t *d_bits)
 {
-	int i;
+	ubit_t bit = 0;
 
-	for (i = 0; i < 8; i++) {
-		if (d_bits[i])
-			return false;
-	}
-	return true;
+	for (int i = 0; i < 8; i++) {
+		bit |= d_bits[i];
+
+	return bit == 0;
 }
 
 static unsigned find_z_seqs(const ubit_t *d_bits, uint8_t *zseq_pos)

