12 September 2021 8:16:36.312 AM newton_rc_test(): FORTRAN90 version newton_rc() solves nonlinear equations using reverse communication. newton_rc_test01 Use newton_rc() to solve a system of 1 nonlinear equation. Initial X and F(X) 1 0.00000 -5.00000 newton_rc - Warning. Previous ||FX|| = 0.105232E-06 Latest ||FX|| = 0.105231E-06 Convergence has slowed down after 17 steps Convergence failure: Final X and F(X) 1 4.27523 -0.105231E-06 newton_rc_test02 Use newton_rc() to solve a system of 2 nonlinear equations. Initial X and F(X) 1 3.00000 -13.0000 2 0.00000 11.0000 Convergence: Final X and F(X) 1 1.00000 -0.594620E-07 2 1.00000 0.238643E-06 newton_rc_test03 Use newton_rc() to solve a system of 4 nonlinear equations. Initial X and F(X) 1 0.00000 1.00000 2 0.00000 4.00000 3 0.00000 9.00000 4 0.00000 16.0000 Convergence: Final X and F(X) 1 0.999878 0.148975E-07 2 1.99976 0.595937E-07 3 2.99963 0.134089E-06 4 3.99951 0.238528E-06 newton_rc_test04 Use newton_rc() to solve a system of 8 nonlinear equations. Initial X and F(X) 1 0.00000 1.00000 2 0.00000 1.00000 3 0.00000 1.00000 4 0.00000 1.00000 5 0.00000 1.00000 6 0.00000 1.00000 7 0.00000 1.00000 8 0.00000 1.00000 newton_rc - Warning. Previous ||FX|| = 0.107140E-06 Latest ||FX|| = 0.107140E-06 Convergence has slowed down after 16 steps Convergence failure: Final X and F(X) 1 -0.570470 0.222045E-15 2 -0.681141 -0.222045E-15 3 -0.700428 0.00000 4 -0.700672 0.00000 5 -0.691736 0.00000 6 -0.665767 0.00000 7 -0.596029 0.422123E-07 8 -0.416411 -0.984739E-07 newton_rc_test(): Normal end of execution. 12 September 2021 8:16:36.312 AM