This directory has the MINPACK-1 test problems. vecfcn.f --- nonlinear equations problems vecjac.f --- nonlinear equations Jacobain matrices ssqfcn.f --- nonlinear least squares problems ssqjac.f --- nonlinear least squares Jacobian matrices objfcn.f --- unconstrained minimization problems grdfcn.f --- unconstrained minimization gradients hesfcn.f --- unconstrained minimization Hessians lhesfcn.f --- unconstrained minimization Hessians (compressed form) neqipt.f --- starting points for nonlinear equations problems ssqipt.f --- starting points for nonlinear least squares problems umipt.f --- starting points for unconstrained minimization problems neq.data --- nonlinear equations sample data ssq.data --- nonlinear least squares sample data um.data --- unconstrained minimization sample data This software is a Fortran 77 version of the original test problems. Additional information on this software can be found in the paper J. J. More', B. S. Garbow and K. E. Hillstrom, Testing unconstrained optimization software, ACM Trans. Math. Software 7 (1981), 17-41. J. J. More', B. S. Garbow and K. E. Hillstrom, Fortran subroutines for testing unconstrained optimization software, ACM Trans. Math. Software 7 (1981), 136-140.