function [ alpha_out ] = Apdot_blk_var2( alpha, x, y, nb_alg )
[ xT, ...
xB ] = FLA_Part_2x1( x, ...
0, 'FLA_BOTTOM' );
[ yT, ...
yB ] = FLA_Part_2x1( y, ...
0, 'FLA_BOTTOM' );
while ( size( xB, 1 ) < size( x, 1 ) )
b = min( size( xT, 1 ), nb_alg );
[ x0, ...
x1, ...
x2 ] = FLA_Repart_2x1_to_3x1( xT, ...
xB, ...
b, 'FLA_TOP' );
[ y0, ...
y1, ...
y2 ] = FLA_Repart_2x1_to_3x1( yT, ...
yB, ...
b, 'FLA_TOP' );
%------------------------------------------------------------%
alpha = Apdot_unb_var2( alpha, x1, y1 );
%------------------------------------------------------------%
[ xT, ...
xB ] = FLA_Cont_with_3x1_to_2x1( x0, ...
x1, ...
x2, ...
'FLA_BOTTOM' );
[ yT, ...
yB ] = FLA_Cont_with_3x1_to_2x1( y0, ...
y1, ...
y2, ...
'FLA_BOTTOM' );
end
alpha_out = alpha;
return
