Welcome to Adams/Solver Subroutines - Kxcad.net

Welcome to Adams/Solver Subroutines
GSEMAP_X, GSEMAP_XDOT, and GSEMAP_U register dependencies with respect to state, the time
derivative of state (implicit GSE only) and input, respectively.
If Adams/Solver (C++) detects calls to the GSEMAP utility subroutines during calls to GSE_DERIV or
GSE_OUTPUT, when IFLAG is set, then the corresponding partial derivative is taken to be sparse.
GSEMAP utility subroutine calls may be made for one or more of the families of partial derivaties. For
example, if GSEMAP_X is called from GSE_DERIV, this particular partial derivative is taken to be
sparse while the other families of partial derivatives, for example the partial derivative of GSE_DERIV
with respect to U, is taken to be full.
Multiple calls are made to GSEPAR utility subroutines, one per dependency. For example, a call
GSEMAP_X(1,1) from GSE_OUTPUT indicates to Adams/Solver (C++) that the first output depends
on the first state. The order of the calls to GSEMAP utility subroutines is significant because entries in
the array subsequently passed to the corresponding GSEPAR utility subroutines is assumed to be in this
order.
Called By
GSE_DERIV and GSE_OUTPUT
Prerequisite
None
Calling Sequence
CALL GSEMAP_X(I,J)
CALL GSEMAP_XDOT(I,J)
CALL GSEMAP_U(I,J)
Input Arguments
I Integer - the row index (the index of the state derivative or the output which
has a functional dependency)
J Integer - the column index (the index of the state or the input with respect to
which the functional dependency is being registered)
Caution: Calls to GSEMAP_XDOT are only appropriate for GSE elements defined with the
IMPLICIT attribute and should only be made from the GSE_DERIV user subroutine, not
from GSE_OUTPUT.
GSE_SET_IMPLICIT
This subroutine is used to specify the implicit/explicit character of the equations governing the GSE.
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