Fix some compiler warnings.

"taking the absolute value of unsigned type 'unsigned int' has no effect"

Change-Id: Iea1f67c2a3171a98ca89d5dc7192a5508d086c16

diff --git a/vpx_dsp/fastssim.c b/vpx_dsp/fastssim.c
index 9b10d3a8aa1c9f055b3f8537a59972ec03c65610..7d90891714373c9fe22d41dfae2243b8bc72705a 100644 (file)
--- a/vpx_dsp/fastssim.c
+++ b/vpx_dsp/fastssim.c
@@ -365,11 +365,11 @@ static void fs_calc_structure(fs_ctx *_ctx, int _l, int bit_depth) {
         unsigned g2;
         unsigned gx;
         unsigned gy;
-        g1 = abs(im1[(j + 1) * w + i + 1] - im1[j * w + i]);
-        g2 = abs(im1[(j + 1) * w + i] - im1[j * w + i + 1]);
+        g1 = abs((int)im1[(j + 1) * w + i + 1] - (int)im1[j * w + i]);
+        g2 = abs((int)im1[(j + 1) * w + i] - (int)im1[j * w + i + 1]);
         gx = 4 * FS_MAXI(g1, g2) + FS_MINI(g1, g2);
-        g1 = abs(im2[(j + 1) * w + i + 1] - im2[j * w + i]);
-        g2 = abs(im2[(j + 1) * w + i] - im2[j * w + i + 1]);
+        g1 = abs((int)im2[(j + 1) * w + i + 1] - (int)im2[j * w + i]);
+        g2 = abs((int)im2[(j + 1) * w + i] - (int)im2[j * w + i + 1]);
         gy = 4 * FS_MAXI(g1, g2) + FS_MINI(g1, g2);
         gx_buf[(j & 7) * stride + i + 4] = gx;
         gy_buf[(j & 7) * stride + i + 4] = gy;