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From: Kevin Ryde <user42@zip.com.au>
Cc: guile-devel@gnu.org
Subject: Re: Forwarded patch for modular exponentiation support (GMP powm)
Date: Tue, 10 Feb 2004 09:31:06 +1000	[thread overview]
Message-ID: <87oes7rft1.fsf@zip.com.au> (raw)
In-Reply-To: <874qtzsv3c.fsf@zip.com.au> (Kevin Ryde's message of "Tue, 10 Feb 2004 09:15:35 +1000")

I wrote:
>
> Also, if m is negative

Oops, I meant the exponent k there.

> The case can be detected
> by mpz_invert, though it will be wasteful to do the same as what
> mpz_powm is about to do.

Actually, I think what you'll want is to call mpz_invert explicitly,
then mpz_powm with the inverse (when it exists) and the absolute value
of the exponent.


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  reply	other threads:[~2004-02-09 23:31 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-01-28 17:22 Forwarded patch for modular exponentiation support (GMP powm) Rob Browning
2004-02-09 23:15 ` Kevin Ryde
2004-02-09 23:31   ` Kevin Ryde [this message]
     [not found]   ` <87llnah2hf.fsf@offby1.atm01.sea.blarg.net>
2004-02-11  1:02     ` Kevin Ryde
2004-02-11  7:00       ` Eric Hanchrow
2004-02-11 23:44         ` Kevin Ryde
2004-02-12  4:56           ` Eric Hanchrow
2004-02-14  0:23             ` Kevin Ryde
2004-02-15  0:04               ` Eric Hanchrow
2004-02-15 22:08                 ` Kevin Ryde
2004-03-20 21:20             ` Marius Vollmer
2004-03-20 21:32               ` Kevin Ryde
2004-03-21  2:28                 ` Marius Vollmer
2004-03-21 22:18                   ` Kevin Ryde
2004-03-22  0:01                     ` Eric Hanchrow
2004-03-22  0:37                       ` Kevin Ryde
2004-03-25  0:02                       ` Kevin Ryde

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