Question: Hypergeometric function with small arguments

I am trying to evaluate the hypergeometric function : hypergeom([1],[1.5],-z) where z is in the order of 1e-6. Its taking very long time where as if I use maple through matlab, then its quite fast !!. Evaluation of Gauss-hypergeometric functions for the similar arguments in maple is quite fast.  Is there any trick I can use for the fast computation of the confluent hypergeom in the case above?.

Thanks for any help

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