Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/gmp-source/mpz/set_str.c

@@ -0,0 +1,144 @@
+/* mpz_set_str(mp_dest, string, base) -- Convert the \0-terminated
+   string STRING in base BASE to multiple precision integer in
+   MP_DEST.  Allow white space in the string.  If BASE == 0 determine
+   the base in the C standard way, i.e.  0xhh...h means base 16,
+   0oo...o means base 8, otherwise assume base 10.
+
+Copyright 1991, 1993, 1994, 1996-1998, 2000-2003, 2005, 2011-2013 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>
+#include <ctype.h>
+#include "gmp-impl.h"
+#include "longlong.h"
+
+#define digit_value_tab __gmp_digit_value_tab
+
+int
+mpz_set_str (mpz_ptr x, const char *str, int base)
+{
+  size_t str_size;
+  char *s, *begs;
+  size_t i;
+  mp_size_t xsize;
+  int c;
+  int negative;
+  const unsigned char *digit_value;
+  TMP_DECL;
+
+  digit_value = digit_value_tab;
+  if (base > 36)
+    {
+      /* For bases > 36, use the collating sequence
+	 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.  */
+      digit_value += 208;
+      if (UNLIKELY (base > 62))
+	return -1;		/* too large base */
+    }
+
+  /* Skip whitespace.  */
+  do
+    c = (unsigned char) *str++;
+  while (isspace (c));
+
+  negative = 0;
+  if (c == '-')
+    {
+      negative = 1;
+      c = (unsigned char) *str++;
+    }
+
+  if (digit_value[c] >= (base == 0 ? 10 : base))
+    return -1;			/* error if no valid digits */
+
+  /* If BASE is 0, try to find out the base by looking at the initial
+     characters.  */
+  if (base == 0)
+    {
+      base = 10;
+      if (c == '0')
+	{
+	  base = 8;
+	  c = (unsigned char) *str++;
+	  if (c == 'x' || c == 'X')
+	    {
+	      base = 16;
+	      c = (unsigned char) *str++;
+	    }
+	  else if (c == 'b' || c == 'B')
+	    {
+	      base = 2;
+	      c = (unsigned char) *str++;
+	    }
+	}
+    }
+
+  /* Skip leading zeros and white space.  */
+  while (c == '0' || isspace (c))
+    c = (unsigned char) *str++;
+  /* Make sure the string does not become empty, mpn_set_str would fail.  */
+  if (c == 0)
+    {
+      SIZ (x) = 0;
+      return 0;
+    }
+
+  TMP_MARK;
+  str_size = strlen (str - 1);
+  s = begs = (char *) TMP_ALLOC (str_size + 1);
+
+  /* Remove spaces from the string and convert the result from ASCII to a
+     byte array.  */
+  for (i = 0; i < str_size; i++)
+    {
+      if (!isspace (c))
+	{
+	  int dig = digit_value[c];
+	  if (UNLIKELY (dig >= base))
+	    {
+	      TMP_FREE;
+	      return -1;
+	    }
+	  *s++ = dig;
+	}
+      c = (unsigned char) *str++;
+    }
+
+  str_size = s - begs;
+
+  LIMBS_PER_DIGIT_IN_BASE (xsize, str_size, base);
+  MPZ_NEWALLOC (x, xsize);
+
+  /* Convert the byte array in base BASE to our bignum format.  */
+  xsize = mpn_set_str (PTR (x), (unsigned char *) begs, str_size, base);
+  SIZ (x) = negative ? -xsize : xsize;
+
+  TMP_FREE;
+  return 0;
+}