Solves linearly-implicit initial-value problems for stiff and nonstiff systems of ordinary differential equations. Both Adams (nonstiff), and Backward Differentiation Formula (stiff) methods are used. All matrices are assumed to be sparse, with the sparsity structure determined on its own or by the user. Uses parts of the Yale Sparse Matrix Package to solve the linear systems that arise, by a direct method. (By: A.C. Hindmarsh and S. Balsdon). Classes : I1a1b . Multistep methods (e.g., Adams predictor-corrector) for general, nonstiff or mildly stiff initial value problems for ordinary differential equations. I1a2 . Stiff and mixed algebraic-ordinary differential equations Type : Fortran subroutine in ODEPACK package. Access : Public domain. Portable. Precision: Double. Note : Source includes all ODEPACK double precision modules. Usage : CALL DLSODIS (RES, ADDA, JAC, NEQ, Y, YDOTI, T, TOUT, ITOL, RTOL, ATOL, ITASK, ISTATE, IOPT, RWORK, LRW, IWORK, LIW, MF) Details : Fullsource Source Sites : (1) NETLIB
NETLIB: Public access repository, The University of Tennessee at Knoxville and Bell Laboratories Precision: Double. (Single: SLSODIS) Note : Source includes all ODEPACK double precision modules. You may access components from NETLIB outside GAMS as follows. Source : Retrieve odepack/opkdmain.f from http://www.netlib.org Fullsource : Retrieve odepack/opkdmain.f, odepack/opkda1.f, and odepack/opkda2.f from http://www.netlib.org
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