nag_ode_ivp_rk_step_revcomm (d02pgc) Example Program Data Nag_RK_4_5 : method Nag_ErrorAssess_on : errass 0.0 6.28318530717958647692 : tstart, tend 0.0 1.0 : yinit(1:n) 0.0 : hstart 1.0e-8 1.0e-8 : thres(1:n)