On Wed, 12 Feb 2014, ref...@uncg.edu wrote:

I don't understand what you mean.  The real and complex fields are loaded
upon start up. It seems as though time testing that if the user wishes to
compute gamma(x) for real x, he would achieve a faster result by changing x
into a complex number and then computing gamma(x).

Fields are, but how about pari? I think that

gamma(3.14159)

actually means something like

load_to_memory(mpfr)
mpfr.gamma(3.14159)

and

gamma(3.14159+2.71828*I)

means

load_to_memory(pari)
pari.gamma(3.14159+2.71828*I)

And if we have old server and 20 students using Sage, it may mean something more than just waiting for few hunder milliseconds.

--
Jori Mäntysalo

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