mod (B^n - 1)) // mpn_mulmod_bnm1, n x n
Will that be better or worse than an unbalanced 3n x n mpn_mulmod_bnm1?
In the fft range, it *should* be worse, since the mpn_mul will be done
as an mpn_mulmod_bnm1 of size 3n. But what about smaller sizes?
Any other tricks?
Regards,
/Niels
--
Niels
and 2n x n, though
That's also related to Torbjörn's suggestion of reusing the transform of
the smaller operand.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance
, but then one can't
use that value in interpolation for the lower limbs. So it may be a bit
tricky.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp
, it would be nice if tuneup -t also showed the total running time
for each (or most) tuned threshold.
/nisse
PS. Thanks for adding the new thresholds on the web page, even before I
got around to asking you for it. ;-)
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email
to test and maintain portability to w*ndows.
I haven't tried doing the same for gmp, but if anybody is interested in
doing work to get windows builds of gmp more well tested, I'd recommend
that something similar is setup.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid
,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org/mailman/listinfo/gmp-devel
in the interval. Could perhaps also return the
number of primes in the interval, and allow a NULL callback.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp
me that I should
correct the toom63 row in the diagram in mul.c.
/nisse
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
xmalloc as an alias for
gmp_default_xalloc, an internal function in mini-gmp.c, rather than
including yet another copy of the same thing.
I think that's a sensible thing to do, but that change wasn't actually
included in the posted patch.
Regards,
/Niels
--
Niels Möller. PGP-encrypted
this in. Ok?
regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org/mailman/listinfo/gmp-devel
or not that's worth the clutter, I'm
not sure.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org/mailman/listinfo/gmp-devel
bits
too large, so any final adjustment step can be omitted.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
Any thoughts on this problem with the custom memory allocation
functions?
ni...@lysator.liu.se (Niels Möller) writes:
I find this part of the interface,
: The REALLOCATE_FUNCTION parameter OLD_SIZE and the FREE_FUNCTION
: parameter SIZE are passed for convenience, but of course they can
mpz_t b)
else if (asize 0)
return mpn_cmp (a-_mp_d, b-_mp_d, asize);
else if (asize 0)
-return -mpn_cmp (a-_mp_d, b-_mp_d, asize);
+return -mpn_cmp (a-_mp_d, b-_mp_d, -asize);
else
return 0;
}
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid
goes wrong.
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org/mailman/listinfo/gmp-devel
Torbjorn Granlund t...@gmplib.org writes:
After MPZ_REALLOC, all cached pointers must be considered to be defunct.
It seems I was only paying attention to the destination pointer. I'll
go through all uses of MPZ_REALLOC.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred
Torbjorn Granlund t...@gmplib.org writes:
ni...@lysator.liu.se (Niels Möller) writes:
One can have alternative functions accepting mp_limb_t and
mp_limb_signed_t, if one finds that useful.
That would be nice, and so would functions accepting long long.
But unfortunatly, neither
, the most urgent problem is to be able to convert between
mpz_t and native (64-bit) integers on W64. Is there any other supported
platform that has chosen an ABI where Long is smaller than the native
word size?
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet
.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org/mailman/listinfo/gmp-devel
popcount (of (x-1) ~x).
a count_trailing_zeros_gcd should be added which is to be optimised
for small counts.
Makes sense. I wonder if that should loop, or return MIN(SOME_LIMIT,
correct ctz) leaving to the caller to loop.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid
inputs to the calling
function? Maybe gcd is not so special?
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
. Then negate, cast the resulting
*non-negative* number to unsigned, and then an unsigned add of 1 to get
the correct absolute value.
Am I misunderstanding anything here?
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale
Torbjorn Granlund t...@gmplib.org writes:
Are you aware if any more files or functions that are unused?
I suspect quite a lot of the new (since a couple of years now...)
division code is not used by any advertised mpn_function.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email
list is protected by
a mutex.
(Speaking of allocation, I also wonder what to do about the problem
described in
http://gmplib.org/list-archives/gmp-devel/2012-January/002161.html,
there were no replies at the time).
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26
limb. The challenge is the large
number of affected functions. The most practical way to do that, I
think, is to start from the bottom up: The various basecase
implementations (which is a pretty large group by themselves), then the
toom-variants, then fft.
Regards,
/Niels
--
Niels Möller. PGP
temporary allocations and the like, and that appears a bit brittle to me
(but I'm not sure I'd trust the automatic stack unwinding with C++
exceptions either...).
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government
the current code most when the divisor is small and the
dividend is fairly large.
I'd like to, but it's unlikely to happen very soon.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance
;
}
I think it makes sense to keep the function, and to reimplement it like
that.
Also the documentation for mpn_get_str ought to be revised, and the
revised version ought to refer to mpn_sizeinbase as the recommended
method for figuring out the space needed.
Regards,
/Niels
--
Niels Möller. PGP
-
mp_bits_per_limb, z);
That seems quite awkward to me. I think it would make more sense to
document the contents of an mpz_t.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance
they are called, and what the purpose is. The old way of
using something like --host=none did disable them, if I understood Marco
correctly.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance
it the user's job to figure out the the right command line flags
for the assembler, I would expect it to be fairly easy to do. Not sure
if it's worth the effort, though.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale
guess
it makes sense to always use a full inverse for redc, given that it's
used mainly when the modulo is invariant?
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance
.
An addmul_1 with size n gives a result (including the carry limb) of up
to B^{n+1} - B, or B-1, B-1, ..., B-1, 0.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance
the changes in smaller pieces?
I'd like to work further on this, but it's not my top priority, so I'm
only happy if you or Marco get to it before I do.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government
ni...@lysator.liu.se (Niels Möller) writes:
Some other test cases fail, though: t-root, t-perfpow, t-divis, and
t-cong. I'm not familiar with this code, I had a quick look at the root
code but didn't see any obvious dependency on bdiv.
Found it, it's the divisibility check in perfpow
differences between odd and even
n?
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org/mailman
long long features conditional on
some configure test. If a program attempts to use those feature and is
compiled with a compiler which doesn't support long long, then it's
going to fail anyway, for other reasons than gmp.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid
ni...@lysator.liu.se (Niels Möller) writes:
Correction: Each iteration gets from \ell to 2 \ell-2, and it needs 2
\ell-1 bits of precision for intermediate values.
Yet another correction, after more work on the implementation.
For numbers x = 1 (mod 8), there are four square roots mod 2^k
values from the earlier (mod B^k) powering.
The subproblem here is: Compute x^n (mod B^{2k}), taking maximun
advantage of a previous computation of x^n (mod B^k).
I could well be missing some simpler trick.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet
64-bit arithmetic was introduced, long couldn't be extended to 64 bits
for fear of breaking too much old code, and thus long long was invented.
And now intmax_t is suffering more or less the same process as long...
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26
think needed handling of alloc = 0
could be done in the unlikely branch of MPZ_REALLOC.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel
wrappers calling this function with different arguments. I don't think
there's much benefit in putting all of these wrapper functions in
separate files.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance
to change if/when the fft
code (or general multiplication) is converted to an itch/scratch
interface.
If we make this interface public, should we advertise itch/scratch, or
should we keep that detail internal, and require applications to always
pass tp == NULL?
Regards,
/Niels
--
Niels Möller
, sqrt_exact and root_exact, I guess.
I posted some new bsqrt and broot code to this list a few months ago).
And perfect_power_p could then be implemented efficiently as
mpz_perfect_root (NULL, x) 0.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email
Torbjorn Granlund t...@gmplib.org writes:
ni...@lysator.liu.se (Niels Möller) writes:
My bsqrt uses an iteration converging to a^{-1/2}, and broot uses an
iteration converging to a^{1/n - 1}. Both division free.
So binv_sqroot (from mpn/generic/perfpow.c and your bsqrt seem
is
a factor of the modulo, which makes it a somewhat strange Hensel
lift.
Regards,,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
. Not tonight, though.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org/mailman/listinfo/gmp-devel
or larger.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org/mailman/listinfo/gmp-devel
, but with less precision and table lookups.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org/mailman
. Similar to how
it's doen with binvert and binvert_limb.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
ni...@lysator.liu.se (Niels Möller) writes:
broot.c:mpn_broot and your mpn_xxx that computes a^{1/n-1},
perhaps call the latter mpn_brootinvm1
I'll start with this one, then.
Here's an initial patch, integrating my code from a few months ago. Some
TODO items:
0. Support
ni...@lysator.liu.se (Niels Möller) writes:
0. Support in speed, for benchmarking.
Not checked in yet, but here are some benchmark numbers, comparing to
binvert:
$ ./speed -s 1-50 -r mpn_binvert mpn_broot.3 mpn_broot.5 mpn_broot.0x
overhead 0.8 secs, precision 1 units
. And then
we have the peculiarity that if the input is of size b bits, the output
is b-1 (since the top bit doesn't affect the square).
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance
is particularly bad for n == 1...), we need some
book-keeping in units of bits.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel
ni...@lysator.liu.se (Niels Möller) writes:
I've tried rewriting mpz_combit. Two reasons: 1. To reduce overhead int
he common case. 2. I just realized that the common case, for both
positive and negative numbers, is to complement the corresponding bit
of the absolute value.
Any comments
calls redc_1, redc_2, and redc_n.
No. I think it would make sense to merge the new bdiv code first.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance
Torbjorn Granlund t...@gmplib.org writes:
ni...@lysator.liu.se (Niels Möller) writes:
If we can arrange for a loop which does a full quotent limb, and applies
it using mpn_submul_1 followed by an mpn_add_cnd_n per quotient3B, would
that be faster or otherwise preferable to your loop
function, so none is
simpler than the other.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org/mailman/listinfo/gmp-devel
.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org/mailman/listinfo/gmp-devel
. 20% difference for single-limb operands definitely is
disturbing, I don't see what that might come from.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance
the old (or new, if that
makes more sense) value of the bit, and possibly also have setbit and
clrbit return the old value).
Maybe it would be good to keep that file in the repo?
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject
think version control is a good thing, also for web stuff.
The files don't have to live in the main gmp repo, it could be a
neighboring repo if that makes more sense.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale
is less safe, but that may be completely wrong.
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org
dependency on bison and flex.
Agreed.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org
you're explaining now, but it
sounds like it could be advantageous to have one operand invariant in
the loop.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance
time.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org/mailman/listinfo/gmp-devel
(to bad it doesn' support 64-bit inputs,
as far as I see). Has anyone played with that? And in general, where can
I find info on the timing of arm instructions (for, say, the most common
A9 and A15 implementations)?
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid
/DDI0388I_cortex_a9_r4p1_trm.pdf
Seems it should be able to do one vmull per cycle. Not sure how to
get latency from the given table, but maybe 6 cycles.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance
Torbjorn Granlund t...@gmplib.org writes:
ni...@lysator.liu.se (Niels Möller) writes:
And for neon instructions, cycle numbers are in
http://infocenter.arm.com/help/topic/com.arm.doc.ddi0388i/DDI0388I_cortex_a9_r4p1_trm.pdf
Page?
In Chapter 3, multiplication instructions listed
extend the values
we add from 32 bits to 64, which I guess isn't for free.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp
for constructors and the like). That's also not as portable
as the current machinery, I'm afraid, but I guess it should be doable in
some way or the other with all linkers which support basic C++ features.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email
, we need an easily maintainable way to support
*both* IFUNC and something more portable. Trying to sort that out is the
only way this discussion can be productive.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government
to mpn_tabselect).
* mpn_add_1_sec and mpn_sub_1_sec. O(n) operations, always propagating
carry all the way.
I you think some or all of these extensions of the mpn interface make
sense, I may be able to spend some time on this.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid
ni...@lysator.liu.se (Niels Möller) writes:
Here's a sketch (totally untested, not even compiled), supporting the
operations I have seen a need for. As usual, good naming is the
difficult part ;-)
Here's a new iteration, which has actually had some testing. I think
I'll be using
by reference. It's adding a
PASCAL feature (what was it called? VAR parameters?) to C.
I think you really have to understand the consequences of that design
choice, to be able to use GMP.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject
mpz_leq_ui_p(Z,UI) (! mpz_gt_ui_p(Z,UI))
+#define mpz_leq_si_p(Z,SI) (! mpz_gt_si_p(Z,UI))
+#define mpz_geq_ui_p(Z,UI) (! mpz_lt_ui_p(Z,UI))
+#define mpz_geq_si_p(Z,SI) (! mpz_lt_si_p(Z,UI))
ought to use SI rather than UI in half of the definitions...
Regards,
/Niels
--
Niels Möller. PGP-encrypted
this seriously or not...
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org/mailman/listinfo
? Not sure if the same trick can be used with the simd
features of x86_32 or power (but as far as I'm aware sse in x86_64 lacks
a 64x64-128 multiply, and then it's pretty useless for multiplication).
/Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email
expect mpz_set_str to have behaviour consistent
with strtol, but then this issue is not the only deviation.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance
ni...@lysator.liu.se (Niels Möller) writes:
With neon, if we put
d0: v0, v1
d1: u0, u0
d2: c0, c1
d3: c0', r1
we could do
vmull.u32 q3, d0, d1 ; Form products
vaddl.u32 q4, d2, d3 ; Add and extend carry inputs
vadd.i64q1, q3, q4
I've implemented a neon
.
How do you test you loops?
I just used tests/mpn/t-mul.
I can't digest your addmul_4 advice right now.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance
?) to the manual, but I haven't done
that yet.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http
wonder where the bottleck might be for the above
loop.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http
ni...@lysator.liu.se (Niels Möller) writes:
Maybe later, but for now, A9 is my target platform. But it seems you're
right that Neon is almost useless there.
I'm attaching the functions I've been testing, in case anyone else would
like to play with them.
/Niels
dnl ARM neon mpn_addmul_4
Torbjorn Granlund t...@gmplib.org writes:
May I innocently ask if the function have survived the prescribed
testing (tests/devel/addmul_N.c and/or tests/devel/try.c)? ;-)
They have been subject to addmul_N.c testing.
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26
-terminal.
What about vldm? Like
vldmup!, {q0,q1,q2,q3}
As far as I understand the manual, it supports a larger number of
registers. The registers must be consecutive, but that's no problem
here.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26
on symbols is appropriate, it would
be better to use the namespace gmp_* or maybe libgmp_*.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing
a normalize
function or macro to the documented interface.
I agree it makes sense to let this function do normalization.
We might want to have a public MPN_NORMALIZE anyway, but that's
a separate issue.
And MPN_ROINIT_N can't normalize, of course.
Regards,
/Niels
--
Niels Möller. PGP
to break the ABI). And it's going to break some configure
scripts, and programs using dlopen to access GMP symbols.
These are all transition problems. I'm not aware of any other drawbacks.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject
local storage), can a use r9 like any other callee-save register or not?
The only potential problem case I see is if my function is interupted by
a signal, and the signal handler expects the value in register r9 to be
valid.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid
, that function is at the top of my list when making
additional mpn functions public. Not entirely sure how to deal with
inline functions, but there are others in gmp-h.in so I should be able
to figure that out.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26
Torbjorn Granlund t...@gmplib.org writes:
ni...@lysator.liu.se (Niels Möller) writes:
Here are some comments on a few that stood out.
Thanks!
I think I'll reply in one mail per function (-group).
I didn't list __gmpn_add_n_sub_n as public since I consider it
experimental. It seemed
the
condition to be the first argument? Will require minor changes to the
assembly implementations.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp
the gcdext functions need a large gp area also when the caller
knows the gcd = 1?
I don't think so, but it gives a very ugly failure behaviour. And I
think I'm *almost* sure this element is invertible is also an
important usecase.
Regardss,
/Niels
--
Niels Möller. PGP-encrypted email is preferred
names for registers, while arm needs
one or two additional lines changed since the final argument is passed
on the stack.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance
ns32k/add_n.s
pyr/add_n.s
z8000/add_n.s
clipper/add_n.s
I imagine not all these platforms are tested regularly...
Something similar could be done with addmul_1/addmul_1c, but let us take
one step at a time.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26
powm_sec and the
recent div_sec routines.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
___
gmp-devel mailing list
gmp-devel@gmplib.org
http://gmplib.org
Torbjorn Granlund t...@gmplib.org writes:
ni...@lysator.liu.se (Niels Möller) writes:
As I understand it, that plan would imply that for assembly files
currently providing both _n and _nc, the _n entry point gets obsolete
That was not the idea, at least not for internal calls
1 - 100 of 723 matches
Mail list logo
