in[6] = a1;
} else {
const int k = c4 * in[0] + rnd;
- const int a0 = k + c2 * in[2] + c4 * in[4] + c6 * in[6];
- const int a1 = k + c6 * in[2] - c4 * in[4] - c2 * in[6];
- const int a2 = k - c6 * in[2] - c4 * in[4] + c2 * in[6];
- const int a3 = k - c2 * in[2] + c4 * in[4] - c6 * in[6];
-
- const int b0 = c1 * in[1] + c3 * in[3] + c5 * in[5] + c7 * in[7];
- const int b1 = c3 * in[1] - c7 * in[3] - c1 * in[5] - c5 * in[7];
- const int b2 = c5 * in[1] - c1 * in[3] + c7 * in[5] + c3 * in[7];
- const int b3 = c7 * in[1] - c5 * in[3] + c3 * in[5] - c1 * in[7];
-
- in[0] = (a0 + b0) >> ROW_SHIFT;
- in[1] = (a1 + b1) >> ROW_SHIFT;
- in[2] = (a2 + b2) >> ROW_SHIFT;
- in[3] = (a3 + b3) >> ROW_SHIFT;
- in[4] = (a3 - b3) >> ROW_SHIFT;
- in[5] = (a2 - b2) >> ROW_SHIFT;
- in[6] = (a1 - b1) >> ROW_SHIFT;
- in[7] = (a0 - b0) >> ROW_SHIFT;
+ const unsigned int a0 = k + c2 * in[2] + c4 * in[4] + c6 * in[6];
+ const unsigned int a1 = k + c6 * in[2] - c4 * in[4] - c2 * in[6];
+ const unsigned int a2 = k - c6 * in[2] - c4 * in[4] + c2 * in[6];
+ const unsigned int a3 = k - c2 * in[2] + c4 * in[4] - c6 * in[6];
+
+ const unsigned int b0 = c1 * in[1] + c3 * in[3] + c5 * in[5] + c7 * in[7];
+ const unsigned int b1 = c3 * in[1] - c7 * in[3] - c1 * in[5] - c5 * in[7];
+ const unsigned int b2 = c5 * in[1] - c1 * in[3] + c7 * in[5] + c3 * in[7];
+ const unsigned int b3 = c7 * in[1] - c5 * in[3] + c3 * in[5] - c1 * in[7];
+
+ in[0] = (int)(a0 + b0) >> ROW_SHIFT;
+ in[1] = (int)(a1 + b1) >> ROW_SHIFT;
+ in[2] = (int)(a2 + b2) >> ROW_SHIFT;
+ in[3] = (int)(a3 + b3) >> ROW_SHIFT;
+ in[4] = (int)(a3 - b3) >> ROW_SHIFT;
+ in[5] = (int)(a2 - b2) >> ROW_SHIFT;
+ in[6] = (int)(a1 - b1) >> ROW_SHIFT;
+ in[7] = (int)(a0 - b0) >> ROW_SHIFT;
}
return 1;
}