470 static void reverse_matrixing(float *su1, float *su2, int *prev_code,  in reverse_matrixing()  argument
491                 float c2 = su2[nsample];  in reverse_matrixing()
495                 su2[nsample] = c1 * 2.0 - c2;  in reverse_matrixing()
504                 float c2 = su2[nsample];  in reverse_matrixing()
506                 su2[nsample] = (c1 - c2) * 2.0;  in reverse_matrixing()
512                 float c2 = su2[nsample];  in reverse_matrixing()
514                 su2[nsample] =  c2       * -2.0;  in reverse_matrixing()
521                 float c2 = su2[nsample];  in reverse_matrixing()
523                 su2[nsample] = c1 - c2;  in reverse_matrixing()
545 static void channel_weighting(float *su1, float *su2, int *p3)  in channel_weighting()  argument
558                 su2[nsample] *= INTERPOLATE(w[1][0], w[1][1], nsample - band);  in channel_weighting()
562                 su2[nsample] *= w[1][1];  in channel_weighting()