Initial commit.

1 files changed, 85 insertions, 0 deletions

diff --git a/gmp-6.3.0/mpz/sqrtrem.c b/gmp-6.3.0/mpz/sqrtrem.c
new file mode 100644
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+++ b/gmp-6.3.0/mpz/sqrtrem.c
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+/* mpz_sqrtrem(root,rem,x) -- Set ROOT to floor(sqrt(X)) and REM
+   to the remainder, i.e. X - ROOT**2.
+
+Copyright 1991, 1993, 1994, 1996, 2000, 2001, 2005, 2011, 2012, 2015 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_sqrtrem (mpz_ptr root, mpz_ptr rem, mpz_srcptr op)
+{
+  mp_size_t op_size, root_size, rem_size;
+  mp_ptr root_ptr, op_ptr, rem_ptr;
+
+  op_size = SIZ (op);
+  if (UNLIKELY (op_size <= 0))
+    {
+      if (UNLIKELY (op_size < 0))
+	SQRT_OF_NEGATIVE;
+      SIZ(root) = 0;
+      SIZ(rem) = 0;
+      return;
+    }
+
+  /* No-op if rem == op */
+  rem_ptr = MPZ_NEWALLOC (rem, op_size);
+
+  /* The size of the root is accurate after this simple calculation.  */
+  root_size = (op_size + 1) / 2;
+  SIZ (root) = root_size;
+
+  op_ptr = PTR (op);
+
+  if (root == op)
+    {
+      /* Allocate temp space for the root, which we then copy to the
+	 shared OP/ROOT variable.  */
+      TMP_DECL;
+      TMP_MARK;
+
+      root_ptr = TMP_ALLOC_LIMBS (root_size);
+      rem_size = mpn_sqrtrem (root_ptr, rem_ptr, op_ptr, op_size);
+
+      if (rem != root)	/* Don't overwrite remainder */
+	MPN_COPY (op_ptr, root_ptr, root_size);
+
+      TMP_FREE;
+    }
+  else
+    {
+      root_ptr = MPZ_NEWALLOC (root, root_size);
+
+      rem_size = mpn_sqrtrem (root_ptr, rem_ptr, op_ptr, op_size);
+    }
+
+  /* Write remainder size last, to make this function give only the square root
+     remainder, when passed ROOT == REM.  */
+  SIZ (rem) = rem_size;
+}