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diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpn/generic/redc_2.c b/Build/source/libs/gmp/gmp-6.0.0/mpn/generic/redc_2.c
new file mode 100644
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--- /dev/null
+++ b/Build/source/libs/gmp/gmp-6.0.0/mpn/generic/redc_2.c
@@ -0,0 +1,110 @@
+/* mpn_redc_2. 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, 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.h"
+#include "gmp-impl.h"
+#include "longlong.h"
+
+
+#if GMP_NAIL_BITS != 0
+you lose
+#endif
+
+/* For testing purposes, define our own mpn_addmul_2 if there is none already
+ available. */
+#ifndef HAVE_NATIVE_mpn_addmul_2
+#undef mpn_addmul_2
+static mp_limb_t
+mpn_addmul_2 (mp_ptr rp, mp_srcptr up, mp_size_t n, mp_srcptr vp)
+{
+ rp[n] = mpn_addmul_1 (rp, up, n, vp[0]);
+ return mpn_addmul_1 (rp + 1, up, n, vp[1]);
+}
+#endif
+
+#if defined (__GNUC__) && defined (__ia64) && W_TYPE_SIZE == 64
+#define umul2low(ph, pl, uh, ul, vh, vl) \
+ do { \
+ mp_limb_t _ph, _pl; \
+ __asm__ ("xma.hu %0 = %3, %5, f0\n\t" \
+ "xma.l %1 = %3, %5, f0\n\t" \
+ ";;\n\t" \
+ "xma.l %0 = %3, %4, %0\n\t" \
+ ";;\n\t" \
+ "xma.l %0 = %2, %5, %0" \
+ : "=&f" (ph), "=&f" (pl) \
+ : "f" (uh), "f" (ul), "f" (vh), "f" (vl)); \
+ } while (0)
+#endif
+
+#ifndef umul2low
+#define umul2low(ph, pl, uh, ul, vh, vl) \
+ do { \
+ mp_limb_t _ph, _pl; \
+ umul_ppmm (_ph, _pl, ul, vl); \
+ (ph) = _ph + (ul) * (vh) + (uh) * (vl); \
+ (pl) = _pl; \
+ } while (0)
+#endif
+
+mp_limb_t
+mpn_redc_2 (mp_ptr rp, mp_ptr up, mp_srcptr mp, mp_size_t n, mp_srcptr mip)
+{
+ mp_limb_t q[2];
+ mp_size_t j;
+ mp_limb_t upn;
+ mp_limb_t cy;
+
+ ASSERT (n > 0);
+ ASSERT_MPN (up, 2*n);
+
+ if ((n & 1) != 0)
+ {
+ up[0] = mpn_addmul_1 (up, mp, n, (up[0] * mip[0]) & GMP_NUMB_MASK);
+ up++;
+ }
+
+ for (j = n - 2; j >= 0; j -= 2)
+ {
+ umul2low (q[1], q[0], mip[1], mip[0], up[1], up[0]);
+ upn = up[n]; /* mpn_addmul_2 overwrites this */
+ up[1] = mpn_addmul_2 (up, mp, n, q);
+ up[0] = up[n];
+ up[n] = upn;
+ up += 2;
+ }
+
+ cy = mpn_add_n (rp, up, up - n, n);
+ return cy;
+}