util: New function log_2_floor().

Calculates the position of the most significant bit in a 32 bit
word.

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/util.h b/lib/util.h
index 7615288d..601f49f1 100644
--- a/lib/util.h
+++ b/lib/util.h
@@ -194,6 +194,7 @@ char *base_name(const char *file_name);
 char *abs_file_name(const char *dir, const char *file_name);
 
 void ignore(bool x OVS_UNUSED);
+int log_2_floor(uint32_t n);
 
 #ifdef  __cplusplus
 }