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上传时间: 2011-10-31
详细说明： 可以实现圆柱拟合 int main() { register int i, j; int problem, ret; double p[5], // 5 is max(2, 3, 5) x[16]; // 16 is max(2, 3, 5, 6, 16) int m, n; double opts[LM_OPTS_SZ], info[LM_INFO_SZ]; char *probname[]={ "Rosenbrock function", "modified Rosenbrock problem", "Powell's function", "Wood's function", "Meyer's (reformulated) problem", "Osborne's problem", "helical valley function", "Boggs & Tolle's problem #3", &qu ot;Hock - Schittkowski problem #28", "Hock - Schittkowski problem #48", "Hock - Schittkowski problem #51", "Hock - Schittkowski problem #01", "Hock - Schittkowski modified problem #21", "hatfldb problem", "hatfldc problem", "equilibrium combustion problem", "Hock - Schittkowski modified #1 problem #52", "Schittkowski modified problem #235", "Boggs & Tolle modified problem #7", "Hock - Schittkowski modified #2 problem #52", "Hock - Schittkowski modified problem #76", }; opts[0]=LM_INIT_MU; opts[1]=1E-15; opts[2]=1E-15; opts[3]=1E-20; opts[4]= LM_DIFF_DELTA; // relevant only if the Jacobian is approximated using finite differences; specifies forward differencing //opts[4]=-LM_DIFF_DELTA; // specifies central differencing to approximate Jacobian; more accurate but more expensive to compute! /* uncomment the appropriate line below to select a minimization problem */ problem= 0; // Rosenbrock function //1; // modified Rosenbrock problem //2; // Powell's function //3; // Wood's function //4; // Meyer's (reformulated) problem //5; // Osborne's problem //6; // helical valley function #ifdef HAVE_LAPACK //7; // Boggs & Tolle's problem 3 //8; // Hock - Schittkowski problem 28 //9; // Hock - Schittkowski problem 48 //10; // Hock - Schittkowski problem 51 #else // no LAPACK #ifdef _MSC_VER #pragma message("LAPACK not available, some test problems cannot be used") #else #warning LAPACK not available, some test problems cannot be used #endif // _MSC_VER #endif /* HAVE_LAPACK */ //11; // Hock - Schittkowski problem 01 //12; // Hock - Schittkowski modified problem 21 //13; // hatfldb problem //14; // hatfldc problem //15; // equilibrium combustion problem switch(problem){ case 0: /* Rosenbrock function */ m=2; n=2; p[0]=-1.2; p[1]=1.0; for(i=0; i
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