From 11da511c784eca003deb90c23570f0873954e0de Mon Sep 17 00:00:00 2001
From: Duncan Wilkie <antigravityd@gmail.com>
Date: Sat, 18 Nov 2023 06:11:09 -0600
Subject: Initial commit.

---
 gmp-6.3.0/mpn/generic/div_qr_2n_pi1.c | 84 +++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 gmp-6.3.0/mpn/generic/div_qr_2n_pi1.c

(limited to 'gmp-6.3.0/mpn/generic/div_qr_2n_pi1.c')

diff --git a/gmp-6.3.0/mpn/generic/div_qr_2n_pi1.c b/gmp-6.3.0/mpn/generic/div_qr_2n_pi1.c
new file mode 100644
index 0000000..131a811
--- /dev/null
+++ b/gmp-6.3.0/mpn/generic/div_qr_2n_pi1.c
@@ -0,0 +1,84 @@
+/* mpn_div_qr_2n_pi1
+
+   Contributed to the GNU project by Torbjorn Granlund and Niels Möller
+
+   THIS FILE CONTAINS INTERNAL FUNCTIONS WITH MUTABLE INTERFACES.  IT IS ONLY
+   SAFE TO REACH THEM THROUGH DOCUMENTED INTERFACES.  IN FACT, IT IS ALMOST
+   GUARANTEED THAT THEY'LL CHANGE OR DISAPPEAR IN A FUTURE GNU MP RELEASE.
+
+
+Copyright 1993-1996, 1999-2002, 2011 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"
+#include "longlong.h"
+
+
+/* 3/2 loop, for normalized divisor */
+mp_limb_t
+mpn_div_qr_2n_pi1 (mp_ptr qp, mp_ptr rp, mp_srcptr np, mp_size_t nn,
+		   mp_limb_t d1, mp_limb_t d0, mp_limb_t di)
+{
+  mp_limb_t qh;
+  mp_size_t i;
+  mp_limb_t r1, r0;
+
+  ASSERT (nn >= 2);
+  ASSERT (d1 & GMP_NUMB_HIGHBIT);
+
+  np += nn - 2;
+  r1 = np[1];
+  r0 = np[0];
+
+  qh = 0;
+  if (r1 >= d1 && (r1 > d1 || r0 >= d0))
+    {
+#if GMP_NAIL_BITS == 0
+      sub_ddmmss (r1, r0, r1, r0, d1, d0);
+#else
+      r0 = r0 - d0;
+      r1 = r1 - d1 - (r0 >> GMP_LIMB_BITS - 1);
+      r0 &= GMP_NUMB_MASK;
+#endif
+      qh = 1;
+    }
+
+  for (i = nn - 2 - 1; i >= 0; i--)
+    {
+      mp_limb_t n0, q;
+      n0 = np[-1];
+      udiv_qr_3by2 (q, r1, r0, r1, r0, n0, d1, d0, di);
+      np--;
+      qp[i] = q;
+    }
+
+  rp[1] = r1;
+  rp[0] = r0;
+
+  return qh;
+}
-- 
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