nag_zptrfs (f07jvc) Example Program Results

 Solution(s)
                    1                  2
 1  ( 2.0000, 1.0000)  (-3.0000,-2.0000)
 2  ( 1.0000, 1.0000)  ( 1.0000, 1.0000)
 3  ( 1.0000,-2.0000)  ( 1.0000,-2.0000)
 4  ( 1.0000,-1.0000)  ( 2.0000, 1.0000)

Backward errors (machine-dependent)
    0.0e+00     0.0e+00

Estimated forward error bounds (machine-dependent)
    9.0e-12     6.1e-12