Add VPX_SWAP macro

Change-Id: I60e233eddef238ad918183392794084673f27d2d

Add VPX_SWAP macro
Change-Id: I60e233eddef238ad918183392794084673f27d2d
a8de3c0c · Yury Gitman · Yaowu Xu · 1c1bc948 · a8de3c0c
Commit a8de3c0c authored Jul 15, 2016 by Yury Gitman Committed by Yaowu Xu Jul 26, 2016
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vpx_dsp/vpx_dsp_common.h vpx_dsp/vpx_dsp_common.h +7 -0

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--- a/vpx_dsp/vpx_dsp_common.h
+++ b/vpx_dsp/vpx_dsp_common.h
@@ -46,6 +46,13 @@ extern "C" {
 # define UNLIKELY(v)  (v)
 #endif

+#define VPX_SWAP(type, a, b) \
+  do {                       \
+    type c = (b);            \
+    b = a;                   \
+    a = c;                   \
+  } while (0)
+
 #if CONFIG_VP9_HIGHBITDEPTH
 // Note:
 // tran_low_t  is the datatype used for final transform coefficients.