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Restrictions on HomCont Constants.

Note that certain combinations of these constants are not allowed in the present implementation. In particular,
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The computation of orientation ITWIST=1 is not implemented for IEQUIB<0 (heteroclinic orbits), IEQUIB=2 (saddle-node homoclinics), IREV=1 (reversible systems), ISTART=3 (homotopy method for starting), or if the equilibrium contains complex eigenvalues in its linearization.
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The homotopy method ISTART=3 is not fully implemented for heteroclinic connections IEQUIB<0, saddle-node homoclinic orbits IEQUIB=2 or reversible systems IREV=1.
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Certain test functions are not valid for certain forms of continuation (see Section 20.6 below); for example PSI(13) and PSI(14) only make sense if ITWIST=1 and PSI(15) and PSI(16) only apply to IEQUIB=2.



Gabriel Lord 2007-11-19