iter=   1 err=    0.398410
iter=   2 err=    0.275339
iter=   3 err=    0.105951
iter=   4 err=    0.059835
iter=   5 err=    0.028524
iter=   6 err=    0.014154
iter=   7 err=    0.007386
iter=   8 err=    0.003445
iter=   9 err=    0.001873
iter=  10 err=    0.000845
iter=  11 err=    0.000471
iter=  12 err=    0.000207
iter=  13 err=    0.000118
iter=  14 err=    0.000050
iter=  15 err=    0.000030
iter=  16 err=    0.000012
iter=  17 err=    0.000007
iter=  18 err=    0.000003
iter=  19 err=    0.000002
iter=  20 err=    0.000000
Estimated error:    5.392648e-21
Iterations needed:     20

Solution vector:
    0.666667    0.499999    0.416669    0.374995    0.354177
    0.343730    0.338582    0.335856    0.334798    0.333659
    0.334310    0.332194    0.336019    0.328166    0.343770
    0.312510    0.375005    0.250003    0.500001    0.000001


press RETURN to continue...
test of solution vector:
      a*x            b
    3.000000     3.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
    1.000000     1.000000
   -1.000000    -1.000000