Faster inverse gamma and factorial for the WP 34S

02162015, 08:46 PM
Post: #35




RE: Faster inverse gamma and factorial for the WP 34S
(02162015 07:09 PM)Dieter Wrote: I wonder what the internal digamma function might return for Ψ(1,4616321449768362) and ...363? Can you post the results with all 34 digits? I don't think I ever tuned up the C version of the digamma routine. The series expansion there is relatively short and aimed for single precision. The XROM version uses significantly more terms (if you are in double precision). I also don't remember why I stored the series constants as reciprocals in XROM  probably saving a few bytes but slower.  Pauli 

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