Ciao Niels,
Il Gio, 7 Febbraio 2013 10:29 am, Niels Möller ha scritto:
> But if we change the meaning of r, maybe it would make sense to
> interpret it as follows:
>
> if r <= size, it's the size of the smaller operand (what your change
> does).
>
> if r > size, its the size of the *product*, so do size limbs by (r -
> size) limbs.
I suggest:
If r > 0, it's the size of the smaller operand.
If r < 0, its absolute value is the size of the *product*.
This way, the meaning of r does not depend on size. In both cases, the -s
parameter gives the larger size.
An example:
$ tune/speed -s 1-10 mpn_mul.-6 mpn_mul.6
mpn_mul.-6 mpn_mul.6
1 n/a n/a
2 n/a n/a
3 #0.000000288 n/a
4 #0.000000202 n/a
5 #0.000000165 n/a
6 n/a #0.000000637
7 n/a #0.000000639
8 n/a #0.000000708
9 n/a #0.000000786
10 n/a #0.000000860
Regards,
m
--
http://bodrato.it/
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