add pa_ulog2()

git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/glitch-free@2424 fefdeb5f-60dc-0310-8127-8f9354f1896f

diff --git a/src/pulsecore/core-util.h b/src/pulsecore/core-util.h
index 49315b5..e9313d4 100644 (file)
--- a/src/pulsecore/core-util.h
+++ b/src/pulsecore/core-util.h
@@ -155,6 +155,17 @@ static inline unsigned pa_make_power_of_two(unsigned n) {
     return n + 1;
 }
 
+static inline unsigned pa_ulog2(unsigned n) {
+    unsigned r = 0;
+
+    while (n) {
+        r++;
+        n = n >> 1;
+    }
+
+    return r;
+}
+
 void pa_close_pipe(int fds[2]);
 
 char *pa_readlink(const char *p);