404   DATA_TYPE *iX = in+n2-7;  in mdct_backward()  local
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()
414     iX         -= 8;  in mdct_backward()
416   }while(iX>=in);  in mdct_backward()
418   iX            = in+n2-8;  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()
428     iX         -= 8;  in mdct_backward()
430   }while(iX>=in);  in mdct_backward()
440     DATA_TYPE *iX =out;  in mdct_backward()  local
446       oX1[3]  =  MULT_NORM (iX[0] * T[1] - iX[1] * T[0]);  in mdct_backward()
447       oX2[0]  = -MULT_NORM (iX[0] * T[0] + iX[1] * T[1]);  in mdct_backward()
449       oX1[2]  =  MULT_NORM (iX[2] * T[3] - iX[3] * T[2]);  in mdct_backward()
450       oX2[1]  = -MULT_NORM (iX[2] * T[2] + iX[3] * T[3]);  in mdct_backward()
452       oX1[1]  =  MULT_NORM (iX[4] * T[5] - iX[5] * T[4]);  in mdct_backward()
453       oX2[2]  = -MULT_NORM (iX[4] * T[4] + iX[5] * T[5]);  in mdct_backward()
455       oX1[0]  =  MULT_NORM (iX[6] * T[7] - iX[7] * T[6]);  in mdct_backward()
456       oX2[3]  = -MULT_NORM (iX[6] * T[6] + iX[7] * T[7]);  in mdct_backward()
459       iX    +=   8;  in mdct_backward()
461     }while(iX<oX1);  in mdct_backward()
463     iX=out+n2+n4;  in mdct_backward()
469       iX-=4;  in mdct_backward()
471       oX2[0] = -(oX1[3] = iX[3]);  in mdct_backward()
472       oX2[1] = -(oX1[2] = iX[2]);  in mdct_backward()
473       oX2[2] = -(oX1[1] = iX[1]);  in mdct_backward()
474       oX2[3] = -(oX1[0] = iX[0]);  in mdct_backward()
477     }while(oX2<iX);  in mdct_backward()
479     iX=out+n2+n4;  in mdct_backward()
484       oX1[0]= iX[3];  in mdct_backward()
485       oX1[1]= iX[2];  in mdct_backward()
486       oX1[2]= iX[1];  in mdct_backward()
487       oX1[3]= iX[0];  in mdct_backward()
488       iX+=4;  in mdct_backward()