1 files changed, 67 insertions, 0 deletions
diff --git a/vendor/gmp-6.3.0/mpz/tdiv_q_2exp.c b/vendor/gmp-6.3.0/mpz/tdiv_q_2exp.c
new file mode 100644
index 0000000..c6b9bd0
--- /dev/null
+++ b/vendor/gmp-6.3.0/mpz/tdiv_q_2exp.c
@@ -0,0 +1,67 @@
+/* mpz_tdiv_q_2exp -- Divide an integer by 2**CNT.  Round the quotient
+   towards -infinity.
+
+Copyright 1991, 1993, 1994, 1996, 2001, 2002, 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"
+
+void
+mpz_tdiv_q_2exp (mpz_ptr r, mpz_srcptr u, mp_bitcnt_t cnt)
+{
+  mp_size_t un, rn;
+  mp_size_t limb_cnt;
+  mp_ptr rp;
+  mp_srcptr up;
+
+  un = SIZ(u);
+  limb_cnt = cnt / GMP_NUMB_BITS;
+  rn = ABS (un) - limb_cnt;
+
+  if (rn <= 0)
+    rn = 0;
+  else
+    {
+      rp = MPZ_REALLOC (r, rn);
+      up = PTR(u) + limb_cnt;
+
+      cnt %= GMP_NUMB_BITS;
+      if (cnt != 0)
+	{
+	  mpn_rshift (rp, up, rn, cnt);
+	  rn -= rp[rn - 1] == 0;
+	}
+      else
+	{
+	  MPN_COPY_INCR (rp, up, rn);
+	}
+    }
+
+  SIZ(r) = un >= 0 ? rn : -rn;
+}