Commit acb37c66 authored by thomas dettbarn's avatar thomas dettbarn
Browse files

getting closer

parent d241230d

lib_dec/ivas_svd_dec_fx.c

+2 −4
Original line number Diff line number Diff line
@@ -1082,7 +1082,7 @@ static void biDiagonalReductionLeft_64( 
            norm_x_e = W_norm( norm_64 );

            norm_x = W_extract_h( W_shl( norm_64, norm_x_e ) );

            f = Mpy_32_32( norm_x, invVal );

            magic_shift = norm_x_e+22+HEADROOM_LEFT_3+2*HEADROOM_LEFT_1-r_e;

            magic_shift = norm_x_e-r_e+(28-HEADROOM_LEFT_3);	// works with headroom_left: 1,2,2

            FOR( jCh = currChannel; jCh < nChannelsL; jCh++ )

            {

                factor1 = W_extract_h( W_shl( singularVectors_Left_64[jCh][currChannel], 32-HEADROOM_LEFT_3 ) );
@@ -1189,9 +1189,7 @@ static void biDiagonalReductionRight_64( 
                norm_x_e = W_norm( norm_64 );

                norm_x = W_extract_h( W_shl( norm_64, norm_x_e ) );

                f = Mpy_32_32( norm_x, invVal );

//                magic_shift = 25 + norm_x_e - r_e; // FIXME: Why does this work?

//                magic_shift = norm_x_e-r_e   +33-(HEADROOM_RIGHT_3+2*HEADROOM_RIGHT_2);

                magic_shift = norm_x_e-r_e   +29-(HEADROOM_RIGHT_3);

                magic_shift = norm_x_e-r_e   +29-(HEADROOM_RIGHT_3); // works with headroom_right: 2,2,2

printf("magic_shift:%3d norm_x_e:%3d r_e:%3d [",magic_shift,norm_x_e,r_e);



                FOR( jCh = idx; jCh < nChannelsC; jCh++ )