util: New function bitwise_is_all_zeros().

[sliver-openvswitch.git] / lib / util.h

diff --git a/lib/util.h b/lib/util.h
index 63f4a24..e5d1c3a 100644 (file)
--- a/lib/util.h
+++ b/lib/util.h
@@ -230,6 +230,8 @@ void bitwise_zero(void *dst_, unsigned int dst_len, unsigned dst_ofs,
                   unsigned int n_bits);
 void bitwise_one(void *dst_, unsigned int dst_len, unsigned dst_ofs,
                  unsigned int n_bits);
+bool bitwise_is_all_zeros(const void *, unsigned int len, unsigned int ofs,
+                          unsigned int n_bits);
 void bitwise_put(uint64_t value,
                  void *dst, unsigned int dst_len, unsigned int dst_ofs,
                  unsigned int n_bits);