Mesa (master): gallium/util: Use HAVE___BUILTIN_FFS* macros.
Emil Velikov
evelikov at kemper.freedesktop.org
Tue Mar 24 20:50:47 UTC 2015
Module: Mesa
Branch: master
Commit: 726d99b19740dca6787ab819ab99bc9d942d80a6
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=726d99b19740dca6787ab819ab99bc9d942d80a6
Author: Jonathan Gray <jsg at jsg.id.au>
Date: Tue Mar 17 12:49:39 2015 +1100
gallium/util: Use HAVE___BUILTIN_FFS* macros.
Make use of the builtin ffs macros and split out ffsll
to a seperate block. Needed for at least OpenBSD which
does not have ffsll in libc.
Signed-off-by: Jonathan Gray <jsg at jsg.id.au>
Reviewed-by: Emil Velikov <emil.l.velikov at gmail.com>
---
src/gallium/auxiliary/util/u_math.h | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h
index 8f62cac..3d27a59 100644
--- a/src/gallium/auxiliary/util/u_math.h
+++ b/src/gallium/auxiliary/util/u_math.h
@@ -383,14 +383,28 @@ unsigned ffs( unsigned u )
return i;
}
-#elif defined(__MINGW32__) || defined(PIPE_OS_ANDROID)
+#elif defined(__MINGW32__) || defined(PIPE_OS_ANDROID) || \
+ defined(HAVE___BUILTIN_FFS)
#define ffs __builtin_ffs
-#define ffsll __builtin_ffsll
#endif
#endif /* FFS_DEFINED */
/**
+ * Find first bit set in long long. Least significant bit is 1.
+ * Return 0 if no bits set.
+ */
+#ifndef FFSLL_DEFINED
+#define FFSLL_DEFINED 1
+
+#if defined(__MINGW32__) || defined(PIPE_OS_ANDROID) || \
+ defined(HAVE___BUILTIN_FFSLL)
+#define ffsll __builtin_ffsll
+#endif
+
+#endif /* FFSLL_DEFINED */
+
+/**
* Find last bit set in a word. The least significant bit is 1.
* Return 0 if no bits are set.
*/
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