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bcb6b03df9
This changeset adds official patches published on gmp website. Signed-off-by: Kirill K. Smirnov <kirill.k.smirnov@gmail.com>
40 lines
1.3 KiB
Diff
40 lines
1.3 KiB
Diff
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# HG changeset patch
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# User Torbjorn Granlund <tege@gmplib.org>
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# Date 1363174284 -3600
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# Node ID ec4d88674036804b26f22c6a2bfca6ae1e92d370
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# Parent e616ff715c34e112d0a5f7535d31ffe1194a5c7d
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(mod): Adhere to mpn_mu_div_qr's overlap requirements.
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diff -r e616ff715c34 -r ec4d88674036 mpz/powm_ui.c
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--- a/mpz/powm_ui.c Sun Feb 17 19:40:16 2013 +0100
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+++ b/mpz/powm_ui.c Wed Mar 13 12:31:24 2013 +0100
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@@ -2,8 +2,8 @@
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Contributed to the GNU project by Torbjorn Granlund.
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-Copyright 1991, 1993, 1994, 1996, 1997, 2000, 2001, 2002, 2005, 2008,
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-2009, 2011, 2012 Free Software Foundation, Inc.
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+Copyright 1991, 1993, 1994, 1996, 1997, 2000, 2001, 2002, 2005, 2008, 2009,
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+2011, 2012, 2013 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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@@ -70,9 +70,14 @@
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}
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else
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{
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+ /* We need to allocate separate remainder area, since mpn_mu_div_qr does
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+ not handle overlap between the numerator and remainder areas.
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+ FIXME: Make it handle such overlap. */
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+ mp_ptr rp = TMP_ALLOC_LIMBS (dn);
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mp_size_t itch = mpn_mu_div_qr_itch (nn, dn, 0);
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mp_ptr scratch = TMP_ALLOC_LIMBS (itch);
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- mpn_mu_div_qr (qp, np, np, nn, dp, dn, scratch);
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+ mpn_mu_div_qr (qp, rp, np, nn, dp, dn, scratch);
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+ MPN_COPY (np, rp, dn);
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}
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TMP_FREE;
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