So, I have a patch up at #9814 which improves the situation. One thing to
note is that addition actually puts off the mpz_remove until later: the x
you obtain from x = y + z has "x._normalized = False," so that repeated
additions don't require multiple mpz_removes. You can argue with this
design
So, I haven't looked at profiling for p-adics for quite a while. But one
way to speed up this kind of item creation is to implement a morphism from
ZZ to Qp and then write a super-fast _call_ method. I can't do it right
now, but I can provide advice if someone else wants to.
David
On Fri, Aug 13
Hi,
sage: K = Qp(13, 5)
sage: 13^5
371293
sage: y = K(10)
sage: z = K(20)
sage: timeit("x = y * z")
625 loops, best of 3: 961 ns per loop # varies a bit but this is
typical
sage: timeit("x = y + z")
625 loops, best of 3: 942 ns per loop # ditto
That's the cost of arithmetic. Pret
