External call

*To*: mathgroup at smc.vnet.net*Subject*: [mg122002] External call*From*: icegood <icegood1980 at gmail.com>*Date*: Sat, 8 Oct 2011 05:35:34 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com

Is it possible to implement in C own function that takes Mathematica functions as argument via MathLink? I need for hardly calculated and changable under input conditions function H[y, a, b, c] of one argument and three parameters find out all points (a, b, c) in parametrical space for which both local minima of H has the same value. It's apriory known that for every input values H will have at most two local minimas for y \in [0, +infinity)