say I am using the CPL parametrization for the dark energy equation of state (or for that matter, any other 2-parameter parametrization of the equation of state), which is implemented in line 98 of camb/equations_ppf.f90:

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`w_de=w_lam+wa_ppf*(1._dl-a)`

However, say I want to put a hard prior on w_de instead (which is given by the combination of w and wa if I understood this correctly), say e.g. I want w_de>-1 because I am studying a quintessence model, how do I impose this?

Thanks a lot! Cheers,

Sunny