From 4ba9be2882d9f1567809edb0a31fcdf11320d41f Mon Sep 17 00:00:00 2001
From: marha <marha@users.sourceforge.net>
Date: Mon, 20 Apr 2015 21:25:25 +0200
Subject: randrproto  xkeyboard-config fontconfig libX11 libXdmcp libXmu pixman
 xkbcomp xserver mesa git update 20 Apr 2015

xserver          commit b1029716e41e252f149b82124a149da180607c96
xkeyboard-config commit 7d00bcc2d9c3944bbdfcbe472ee3299729dc7687
libX11           commit 748d47e69f5c12d8557d56a8a8ec166588da7b93
libXdmcp         commit b10f382e3aa2e86cd5a2bc27d6758da55f0ab1f6
xkbcomp          commit 1ae525b3d236b59e6437b2b5433d460e18370973
pixman           commit 58e21d3e45c5227c2ca9ac00cf044f22a7975180
randrproto       commit 98da0d6e48b7d124d6788ea568e9f9e3dc204322
libXmu           commit 4459e6940fe3fdf26a8d5d4c71989498bc400a62
fontconfig       commit 07be485a0a84995ce69bf60e3b1bb22cb35f6b0e
mesa             commit c1485f4b7d044724b3dbc1011f3c3a8a53132010
---
 mesalib/src/mesa/main/imports.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 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 29f249980..c4d917ebb 100644
--- a/mesalib/src/mesa/main/imports.h
+++ b/mesalib/src/mesa/main/imports.h
@@ -433,6 +433,30 @@ _mesa_fls(unsigned int n)
 #endif
 }
 
+/**
+ * Find the last (most significant) bit set in a uint64_t value.
+ *
+ * Essentially ffsll() in the reverse direction.
+ */
+static inline unsigned int
+_mesa_flsll(uint64_t n)
+{
+#ifdef HAVE___BUILTIN_CLZLL
+   return n == 0 ? 0 : 64 - __builtin_clzll(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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