Commit 0e88bf6c authored by thomas dettbarn's avatar thomas dettbarn
Browse files

now i have a metric to decide if my changes are good or bad.

parent cd7a111a

lib_dec/ivas_svd_dec_fx.c

+44 −60
Original line number Diff line number Diff line
@@ -918,7 +918,6 @@ static void HouseholderReduction_fx( 
		}



//                bitwindow=nCh+1;

		bitwindow=1;

		biDiagonalReductionRight_64(

			singularVectors_Left_64,bitwindow,

			secDiag_fx,secDiag_fx_e,
@@ -1003,6 +1002,11 @@ static void HouseholderReduction_fx( 
            move32();

        }

    }











    pop_wmops();

    {

	    int i,j;
@@ -1016,45 +1020,25 @@ static void HouseholderReduction_fx( 
		    for (j=0;j<nChannelsC;j++)

		    {

			    Word16 n;

				Word32 bestmatch;

				Word32 retval;

				int better;

				unsigned int x;

			    Word32 tmp;

			    unsigned int x,y;

			    int k;

				bestmatch=8;

				x=(unsigned int)singularVectors_Left_fx[i][j];

				retval=x;

				better=0;

				for (k=0;k<64;k++)

				{

					int leadingzeros;

					unsigned int y;

					Word32 z;

					int l;

			    int cnt;

			    n=norm_l(singularVectors_Left_fx[i][j]);

			    tmp=singularVectors_Left_fx[i][j]<<n;

                            x=(unsigned int)tmp;



					z=W_extract_l(W_shr(singularVectors_Left_64[i][j],k));	

					y=x^(unsigned int)z;

					leadingzeros=0;

					for (l=0;l<32;l++)

					{

						if (y&0x80000000) break;

						leadingzeros++;

						y<<=1;

					}

					if (bestmatch<leadingzeros)

					{

						bestmatch=leadingzeros;

						retval=z;

						better=1;

					}

				}

			    n=W_norm(singularVectors_Left_64[i][j]);

			    tmp=W_extract_h(W_shl(singularVectors_Left_64[i][j],n));

			    y=(unsigned int)tmp;

			    cnt=0;

				if (!((x^y)&0xf0000000)) bettercnt++;

			    totalcnt++;

				if (retval!=singularVectors_Left_fx[i][j]) bettercnt++;

				singularVectors_Left_fx[i][j]=retval;

		    }	

	    }

	    printf("\nbetter %d/%d\n",bettercnt,totalcnt);

    }



    /* SingularVecotr Accumulation */

    singularVectorsAccumulationRight_fx( singularVectors_Left_fx, singularVectors_Right_fx, secDiag_fx, singularVectors_Left_fx_e, secDiag_fx_e, nChannelsC );