[petsc-users] is TS_EQ_DAE_SEMI_EXPLICIT_INDEX functional

[Huck, Moritz via petsc-users]

Hi,
TS_EQ_DAE_SEMI_EXPLICIT_INDEX(?) are defined in TSEquationType but not 
mentioned in the manual.
Is this feature functional ?
If yes how do I have to define the RHSFunction? 
(I am asking since the ODE variant has it defined as G= M^-1 g, which cannot 
work for a DAE)

Best Regards,
Moritz