From 3dcdc3c9207f5c08fd1d2265de023d3ec0c55cf9 Mon Sep 17 00:00:00 2001
From: Aleksander Morgado <aleksander@lanedo.com>
Date: Fri, 2 Dec 2011 09:55:39 +0100
Subject: [PATCH] modem-helpers: new helper to count number of bits set in a
 bitmask

---
 src/mm-modem-helpers.c | 10 ++++++++++
 src/mm-modem-helpers.h |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/src/mm-modem-helpers.c b/src/mm-modem-helpers.c
index 63bc07dd..bc1b27a4 100644
--- a/src/mm-modem-helpers.c
+++ b/src/mm-modem-helpers.c
@@ -1441,3 +1441,13 @@ done:
 
     return array;
 }
+
+guint
+mm_count_bits_set (gulong number)
+{
+    guint c;
+
+    for (c = 0; number; c++)
+        number &= number - 1;
+    return c;
+}
diff --git a/src/mm-modem-helpers.h b/src/mm-modem-helpers.h
index 24ad6f53..47cd87d1 100644
--- a/src/mm-modem-helpers.h
+++ b/src/mm-modem-helpers.h
@@ -92,4 +92,6 @@ gint        cind_response_get_max       (CindResponse *r);
 
 GByteArray *mm_parse_cind_query_response(const char *reply, GError **error);
 
+guint mm_count_bits_set (gulong number);
+
 #endif  /* MM_MODEM_HELPERS_H */