| Version 3 (modified by , 12 years ago) ( diff ) |
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SUBROUTINE Jacobian2D(CELLINFO ci, REAL[] q, REAL[] dfdt, REAL[] dfdq)
Defined In:
contrib/astro/physics/i_i_ODEs.f90
Inputs:
CELLINFO ci. Contains information and constants that help calculate the derivatives.
REAL[] q. The 1D array that holds the field values for the cell.
REAL[] dfdt. A 1D array that is returned with the the function f's time-derivatives. This does not actually get used, and should probably be removed.
REAL[] dfdq. A 2D array that returns the Jacobian matrix of f with respect to the field variables in q.
Description:
Calculates the Jacobian matrix of the source term in Stiff() using the field variables in q. Much like Derivatives2D(), This subroutine uses ci to control the subroutines that factor in the various physical and coordinate conditions that affect the resulting matrix, which is returned via dfdq.
Called In:
Modules Used:
None.
Files Included:
None.
