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LAFF/Answers/Week06/Utrsv_unb_var1.m
Julien Lengrand-Lambert d4dce71599 Create repo
2018-05-02 09:13:08 +02:00

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Matlab
Executable File

function [ b_out ] = Utrsv_unb_var1( U, b )
[ UTL, UTR, ...
UBL, UBR ] = FLA_Part_2x2( U, ...
0, 0, 'FLA_BR' );
[ bT, ...
bB ] = FLA_Part_2x1( b, ...
0, 'FLA_BOTTOM' );
while ( size( UBR, 1 ) < size( U, 1 ) )
[ U00, u01, U02, ...
u10t, upsilon11, u12t, ...
U20, u21, U22 ] = FLA_Repart_2x2_to_3x3( UTL, UTR, ...
UBL, UBR, ...
1, 1, 'FLA_TL' );
[ b0, ...
beta1, ...
b2 ] = FLA_Repart_2x1_to_3x1( bT, ...
bB, ...
1, 'FLA_TOP' );
%------------------------------------------------------------%
beta1 = beta1 - laff_dot( u12t, b2 );
beta1 = beta1 / upsilon11;
%------------------------------------------------------------%
[ UTL, UTR, ...
UBL, UBR ] = FLA_Cont_with_3x3_to_2x2( U00, u01, U02, ...
u10t, upsilon11, u12t, ...
U20, u21, U22, ...
'FLA_BR' );
[ bT, ...
bB ] = FLA_Cont_with_3x1_to_2x1( b0, ...
beta1, ...
b2, ...
'FLA_BOTTOM' );
end
b_out = [ bT
bB ];
return