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/mpz/get_str.c | 115 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 gmp-6.3.0/mpz/get_str.c

(limited to 'gmp-6.3.0/mpz/get_str.c')

diff --git a/gmp-6.3.0/mpz/get_str.c b/gmp-6.3.0/mpz/get_str.c
new file mode 100644
index 0000000..c00a9a3
--- /dev/null
+++ b/gmp-6.3.0/mpz/get_str.c
@@ -0,0 +1,115 @@
+/* mpz_get_str (string, base, mp_src) -- Convert the multiple precision
+   number MP_SRC to a string STRING of base BASE.  If STRING is NULL
+   allocate space for the result.  In any case, return a pointer to the
+   result.  If STRING is not NULL, the caller must ensure enough space is
+   available to store the result.
+
+Copyright 1991, 1993, 1994, 1996, 2000-2002, 2005, 2012, 2017 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 <string.h> /* for strlen */
+#include "gmp-impl.h"
+#include "longlong.h"
+
+char *
+mpz_get_str (char *res_str, int base, mpz_srcptr x)
+{
+  mp_ptr xp;
+  mp_size_t x_size = SIZ (x);
+  char *return_str;
+  size_t str_size;
+  size_t alloc_size = 0;
+  const char *num_to_text;
+  int i;
+  TMP_DECL;
+
+  num_to_text = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+  if (base > 1)
+    {
+      if (base <= 36)
+	num_to_text = "0123456789abcdefghijklmnopqrstuvwxyz";
+      else if (UNLIKELY (base > 62))
+	return NULL;
+    }
+  else if (base > -2)
+    {
+      base = 10;
+    }
+  else
+    {
+      base = -base;
+      if (UNLIKELY (base > 36))
+	return NULL;
+    }
+
+  /* allocate string for the user if necessary */
+  if (res_str == NULL)
+    {
+      /* digits, null terminator, possible minus sign */
+      MPN_SIZEINBASE (alloc_size, PTR(x), ABS(x_size), base);
+      alloc_size += 1 + (x_size<0);
+      res_str = __GMP_ALLOCATE_FUNC_TYPE (alloc_size, char);
+    }
+  return_str = res_str;
+
+  if (x_size < 0)
+    {
+      *res_str++ = '-';
+      x_size = -x_size;
+    }
+
+  /* mpn_get_str clobbers its input on non power-of-2 bases */
+  TMP_MARK;
+  xp = PTR (x);
+  if (! POW2_P (base))
+    {
+      xp = TMP_ALLOC_LIMBS (x_size | 1);  /* |1 in case x_size==0 */
+      MPN_COPY (xp, PTR (x), x_size);
+    }
+
+  str_size = mpn_get_str ((unsigned char *) res_str, base, xp, x_size);
+  ASSERT (alloc_size == 0 || str_size <= alloc_size - (SIZ(x) < 0));
+
+  /* Convert result to printable chars.  */
+  for (i = 0; i < str_size; i++)
+    res_str[i] = num_to_text[(int) res_str[i]];
+  res_str[str_size] = 0;
+
+  TMP_FREE;
+
+  /* if allocated then resize down to the actual space required */
+  if (alloc_size != 0)
+    {
+      size_t  actual_size = str_size + 1 + (res_str - return_str);
+      ASSERT (actual_size == strlen (return_str) + 1);
+      __GMP_REALLOCATE_FUNC_MAYBE_TYPE (return_str, alloc_size, actual_size,
+					char);
+    }
+  return return_str;
+}
-- 
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