  For single and twochannel nucleon-nucleon scattering the asymptotic form of
the phase function for r->0 were taken into account for the asymptotic behavior
of the wave function. Asymptotics of the wave function will not r^(l+1), and
will have a more complex view and be also determined by the behavior of the
potential near the origin. Have examined the cases for nonsingular (weakly
singular) and strongly singular potentials. Were the numerical calculations of
phase, amplitude and wave functions for the nucleon-nucleon potential Argonne
v18. Considered 1S0-, 3P0-, 3P1- states of the np- system.
