Initial commit.

1 files changed, 56 insertions, 0 deletions

diff --git a/gmp-6.3.0/mpn/generic/redc_1.c b/gmp-6.3.0/mpn/generic/redc_1.c
new file mode 100644
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--- /dev/null
+++ b/gmp-6.3.0/mpn/generic/redc_1.c
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+/* mpn_redc_1.  Set rp[] <- up[]/R^n mod mp[].  Clobber up[].
+   mp[] is n limbs; up[] is 2n limbs.
+
+   THIS IS AN INTERNAL FUNCTION WITH A MUTABLE INTERFACE.  IT IS ONLY
+   SAFE TO REACH THIS FUNCTION THROUGH DOCUMENTED INTERFACES.
+
+Copyright (C) 2000-2002, 2004, 2008, 2009, 2012 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-impl.h"
+
+mp_limb_t
+mpn_redc_1 (mp_ptr rp, mp_ptr up, mp_srcptr mp, mp_size_t n, mp_limb_t invm)
+{
+  mp_size_t j;
+  mp_limb_t cy;
+
+  ASSERT (n > 0);
+  ASSERT_MPN (up, 2*n);
+
+  for (j = n - 1; j >= 0; j--)
+    {
+      cy = mpn_addmul_1 (up, mp, n, (up[0] * invm) & GMP_NUMB_MASK);
+      ASSERT (up[0] == 0);
+      up[0] = cy;
+      up++;
+    }
+
+  cy = mpn_add_n (rp, up, up - n, n);
+  return cy;
+}