Hello GMP developers, Now that mpn_mul no longer dispatches to mpn_sqr, the squaring optimization is missing in mpz_addmul/mpz_submul. That is,
mpz_addmul(sum, a, a);
is noticeably slower than
mpz_mul(tmp, a, a);
mpz_add(sum, sum, tmp);
This should be easy to fix.
Fredrik
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