util: Add util_bit_field

2014-12-29 19:41:24 -06:00 · 2014-12-29 19:41:24 -06:00 · 56f1ccf7f2
parent c8fb0b21f1
commit 56f1ccf7f2
1 changed files with 5 additions and 0 deletions
--- a/src/util.h
+++ b/src/util.h
@ -28,4 +28,9 @@

 const char *util_ssid_to_utf8(size_t len, const uint8_t *ssid);

+static inline uint8_t util_bit_field(const uint8_t oct, int start, int num)
+{
+	unsigned char mask = (1 << num) - 1;
+	return (oct >> start) & mask;
+}
 #endif /* __UTIL_H */