Finds a minimum of the sum of the squares of m nonlinear functions in n variables by a modification of the Levenberg-Marquardt algorithm. The user must provide a subroutine which calculates the functions and the Jacobian. Classes : K1b1a2 . Unconstrained nonlinear least squares approximation by smooth functions, user provides first derivatives Type : Fortran subroutine in MINPACK package. Access : Public domain. Portable. Precision: Double. Note : Single precision version available in NETLIB package SMINPACK. Usage : CALL LMDER(FCN, M, N, X, FVEC, FJAC, LDFJAC, FTOL, XTOL, GTOL, MAXFEV, DIAG, MODE, FACTOR, NPRINT, INFO, NFEV, NJEV, IPVT, QTF, WA1, WA2, WA3, WA4) See also : CHKDER checks user-supplied Jacobian Details : Fullsource Source Sites : (1) NETLIB
NETLIB: Public access repository, The University of Tennessee at Knoxville and Bell Laboratories Precision: Double. Note : Single precision version available in NETLIB package SMINPACK. You may access components from NETLIB outside GAMS as follows. Source : echo "send only lmder from minpack" | mail netlib@ornl.gov Fullsource : echo "send lmder from minpack" | mail netlib@ornl.gov
GAMS is a service of the Mathematical and Computational Sciences Division of the Information Technology Laboratory of the National Institute of Standards and Technology
This page was generated on Sat Sep 20, 2008 at 02:59:50 UTC