Commit e1962f29 authored by vaillancour's avatar vaillancour
Browse files

Fix part 4 of specific OV

parent ee418501

lib_enc/cod_tcx.c

+16 −2
Original line number Diff line number Diff line
@@ -68,10 +68,16 @@ void HBAutocorrelation( 
            move16();

            L_tmp = L_msu0( 0, y[i], y[i] );

            L_tmp = L_shr( L_tmp, 1 );

#ifdef BASOP_NOGLOB  /* Only the sub can overflow is the current L_sum is negative and already close to MIN */

            L_sum = L_add( L_shr( L_sub_o( L_sum, 1, &Overflow ), 1 ), 1 );

#else

            L_sum = L_add( L_shr( L_sub( L_sum, 1 ), 1 ), 1 );



#endif

#ifdef BASOP_NOGLOB

            L_sum = L_sub_o( L_sum, L_tmp, &Overflow );

#else

            L_sum = L_sub( L_sum, L_tmp );



#endif

            FOR (j = add(i,1); j<len; j++)

            {

                L_tmp = L_msu0( 0, y[j], y[j] );
@@ -89,9 +95,17 @@ void HBAutocorrelation( 
                    move16();

                    shift = add( shift, 1 );

                    L_tmp = L_shr( L_tmp, 1 );

#ifdef BASOP_NOGLOB  /* Only the sub can overflow is the current L_sum is negative and already close to MIN */

                    L_sum = L_add( L_shr( L_sub_o( L_sum, 1, &Overflow ), 1 ), 1 );

#else

                    L_sum = L_add( L_shr( L_sub( L_sum, 1 ), 1 ), 1 );

#endif

                }

#ifdef BASOP_NOGLOB

                L_sum = L_sub_o( L_sum, L_tmp, &Overflow );

#else

                L_sum = L_sub( L_sum, L_tmp );

#endif

            }

            BREAK;

        }