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[Question #157961]: Multiplication by a small parameter yields zeros.

 

New question #157961 on DOLFIN:
https://answers.launchpad.net/dolfin/+question/157961

Hello,

I'm trying to multiply a field (called H in this instance, which represents the thickness of a thin film, which has an average value of 1000 or so), by a small parameter, called A, which has a value of around 1e-25.  Instead of yielding values around 1e-22 as one might expect, I get all zeros.  If I do the multiplication in several steps, (e.g. H*(A*1e15)/1e15), I can coerce the correct result.  Any ideas on how to remedy this problem?

Thanks,

Doug Brinkerhoff   

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