Bill Allombert on Fri, 29 Jan 2010 11:45:38 +0100

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leftright_pow and sliding window powering algorithm

Dear PARI developers,

I have renamed leftright_pow to gen_pow and leftright_pow_u to gen_powu,
and I have implemented the sliding window powering algorithm, which is
often 30% faster, when multiplications are slow.

Code that depended on the undocumented fact that leftright_pow only ever
multiplied by the basis should be fixed to use