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authorPeter Breitenlohner <peb@mppmu.mpg.de>2014-06-18 11:12:01 +0000
committerPeter Breitenlohner <peb@mppmu.mpg.de>2014-06-18 11:12:01 +0000
commit0c2f0333a4e539325da80cdf3fb182cd17134665 (patch)
treede5daa66b5595292a33c25110aa58ff8bff75543 /Build/source/libs/gmp/gmp-6.0.0/mpn/generic/toom_eval_dgr3_pm1.c
parentdb612d5045ef55da386a2c3350d4811d1da1a858 (diff)
Add libs/gmp and libs/mpfr in preparation for MetaPost 2.0
git-svn-id: svn://tug.org/texlive/trunk@34274 c570f23f-e606-0410-a88d-b1316a301751
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diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpn/generic/toom_eval_dgr3_pm1.c b/Build/source/libs/gmp/gmp-6.0.0/mpn/generic/toom_eval_dgr3_pm1.c
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+/* mpn_toom_eval_dgr3_pm1 -- Evaluate a degree 3 polynomial in +1 and -1
+
+ Contributed to the GNU project by Niels Möller
+
+ THE FUNCTION IN THIS FILE IS INTERNAL WITH A MUTABLE INTERFACE. IT IS ONLY
+ SAFE TO REACH IT THROUGH DOCUMENTED INTERFACES. IN FACT, IT IS ALMOST
+ GUARANTEED THAT IT WILL CHANGE OR DISAPPEAR IN A FUTURE GNU MP RELEASE.
+
+Copyright 2009 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP Library is free software; you can redistribute it and/or modify
+it under the terms of either:
+
+ * the GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 3 of the License, or (at your
+ option) any later version.
+
+or
+
+ * the GNU General Public License as published by the Free Software
+ Foundation; either version 2 of the License, or (at your option) any
+ later version.
+
+or both in parallel, as here.
+
+The GNU MP Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received copies of the GNU General Public License and the
+GNU Lesser General Public License along with the GNU MP Library. If not,
+see https://www.gnu.org/licenses/. */
+
+
+#include "gmp.h"
+#include "gmp-impl.h"
+
+int
+mpn_toom_eval_dgr3_pm1 (mp_ptr xp1, mp_ptr xm1,
+ mp_srcptr xp, mp_size_t n, mp_size_t x3n, mp_ptr tp)
+{
+ int neg;
+
+ ASSERT (x3n > 0);
+ ASSERT (x3n <= n);
+
+ xp1[n] = mpn_add_n (xp1, xp, xp + 2*n, n);
+ tp[n] = mpn_add (tp, xp + n, n, xp + 3*n, x3n);
+
+ neg = (mpn_cmp (xp1, tp, n + 1) < 0) ? ~0 : 0;
+
+#if HAVE_NATIVE_mpn_add_n_sub_n
+ if (neg)
+ mpn_add_n_sub_n (xp1, xm1, tp, xp1, n + 1);
+ else
+ mpn_add_n_sub_n (xp1, xm1, xp1, tp, n + 1);
+#else
+ if (neg)
+ mpn_sub_n (xm1, tp, xp1, n + 1);
+ else
+ mpn_sub_n (xm1, xp1, tp, n + 1);
+
+ mpn_add_n (xp1, xp1, tp, n + 1);
+#endif
+
+ ASSERT (xp1[n] <= 3);
+ ASSERT (xm1[n] <= 1);
+
+ return neg;
+}