From b08ba56019b146786e1cde553c036dd0c4fd02e5 Mon Sep 17 00:00:00 2001
From: marha <marha@users.sourceforge.net>
Date: Fri, 14 Sep 2012 11:09:08 +0200
Subject: fontconfig libX11 mesa xkeyboard-config git update 14 sep 2012

---
 mesalib/src/mesa/main/imports.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'mesalib/src/mesa/main/imports.h')

diff --git a/mesalib/src/mesa/main/imports.h b/mesalib/src/mesa/main/imports.h
index abf216c99..81da51047 100644
--- a/mesalib/src/mesa/main/imports.h
+++ b/mesalib/src/mesa/main/imports.h
@@ -520,6 +520,28 @@ extern unsigned int
 _mesa_bitcount_64(uint64_t n);
 #endif
 
+/**
+ * Find the last (most significant) bit set in a word.
+ *
+ * Essentially ffs() in the reverse direction.
+ */
+static inline unsigned int
+_mesa_fls(unsigned int n)
+{
+#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 304)
+   return n == 0 ? 0 : 32 - __builtin_clz(n);
+#else
+   unsigned int v = 1;
+
+   if (n == 0)
+      return 0;
+
+   while (n >>= 1)
+       v++;
+
+   return v;
+#endif
+}
 
 extern GLhalfARB
 _mesa_float_to_half(float f);
-- 
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