[PPL-devel] mpz_addmul_ui with ui = 1
Vincent Lefevre
vincent at vinc17.org
Tue Feb 3 01:08:09 CET 2009
On 2009-02-02 22:30:03 +0100, Roberto Bagnara wrote:
> #if 1 // CHECKME: the test seems to speed up the GMP computation.
> const Coefficient& y_i = y[i];
> if (y_i != 0)
> sub_mul_assign(x_i, y_i, normalized_x_k);
> #else
> sub_mul_assign(x_i, y[i], normalized_x_k);
> #endif // 1
Couldn't this be due to C++ overhead? Have you tried in C?
--
Vincent Lefèvre <vincent at vinc17.org> - Web: <http://www.vinc17.org/>
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Work: CR INRIA - computer arithmetic / Arenaire project (LIP, ENS-Lyon)
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