[ADMB Users] how to calculate the hessian matrix by autodif library

wenjian sgwj1 at 163.com
Sun Oct 10 19:52:01 PDT 2010

   i want to get hessian matrix by call fmm:hessian(),and i get an error as follow.
  error LNK2001: unresolved external symbol "public: class dmatrix & __thiscall fmm::hessian(void)" (?hessian at fmm@@QAEAAVdmatrix@@XZ)
1>.\Debug/t.exe : fatal error LNK1120: 1 unresolved externals
   but i can successfully call fmm:fmin function.
   thank you in advance!
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