From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
swap() will swap its two arguments while keeping the required
tmp variable hidden. Makes for neater code.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
lib/igt_aux.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/lib/igt_aux.h b/lib/igt_aux.h
index 6c83c53..63e1b06 100644
--- a/lib/igt_aux.h
+++ b/lib/igt_aux.h
@@ -90,4 +90,10 @@ void intel_require_memory(uint32_t count, uint32_t size, unsigned mode);
#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))
+#define swap(a, b) do { \
+ typeof(a) _tmp = (a); \
+ (a) = (b); \
+ (b) = _tmp; \
+} while (0)
+
#endif /* IGT_AUX_H */
--
2.0.4
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