是 COLSYS 的更新版。国外有名的解常微分BVP的求解器，对奇异问题有很好的适应性。-C　this package solves boundary value problems for

C　ordinary differential equations, as described below.

C

C　COLNEW is a modification of the package COLSYS by ascher,

C　christiansen and russell [1]. It incorporates a new basis

C　representation replacing b-splines, and improvements for

C　the linear and nonlinear algebraic equation solvers.

C　the package can be referenced as either COLNEW or COLSYS.