405   DATA_TYPE *oX = out+n2+n4;  in mdct_backward()  local
409     oX         -= 4;  in mdct_backward()
410     oX[0]       = MULT_NORM(-iX[2] * T[3] - iX[0]  * T[2]);  in mdct_backward()
411     oX[1]       = MULT_NORM (iX[0] * T[3] - iX[2]  * T[2]);  in mdct_backward()
412     oX[2]       = MULT_NORM(-iX[6] * T[1] - iX[4]  * T[0]);  in mdct_backward()
413     oX[3]       = MULT_NORM (iX[4] * T[1] - iX[6]  * T[0]);  in mdct_backward()
419   oX            = out+n2+n4;  in mdct_backward()
424     oX[0]       =  MULT_NORM (iX[4] * T[3] + iX[6] * T[2]);  in mdct_backward()
425     oX[1]       =  MULT_NORM (iX[4] * T[2] - iX[6] * T[3]);  in mdct_backward()
426     oX[2]       =  MULT_NORM (iX[0] * T[1] + iX[2] * T[0]);  in mdct_backward()
427     oX[3]       =  MULT_NORM (iX[0] * T[0] - iX[2] * T[1]);  in mdct_backward()
429     oX         += 4;  in mdct_backward()