--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/wide-int-print.cc	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,140 @@
+/* Printing operations with very long integers.
+   Copyright (C) 2012-2017 Free Software Foundation, Inc.
+   Contributed by Kenneth Zadeck <zadeck@naturalbridge.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+GCC 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 a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+
+/*
+ * public printing routines.
+ */
+
+#define BLOCKS_NEEDED(PREC) \
+  (((PREC) + HOST_BITS_PER_WIDE_INT - 1) / HOST_BITS_PER_WIDE_INT)
+
+void
+print_dec (const wide_int_ref &wi, char *buf, signop sgn)
+{
+  if (sgn == SIGNED)
+    print_decs (wi, buf);
+  else
+    print_decu (wi, buf);
+}
+
+void
+print_dec (const wide_int_ref &wi, FILE *file, signop sgn)
+{
+  if (sgn == SIGNED)
+    print_decs (wi, file);
+  else
+    print_decu (wi, file);
+}
+
+
+/* Try to print the signed self in decimal to BUF if the number fits
+   in a HWI.  Other print in hex.  */
+
+void
+print_decs (const wide_int_ref &wi, char *buf)
+{
+  if ((wi.get_precision () <= HOST_BITS_PER_WIDE_INT)
+      || (wi.get_len () == 1))
+    {
+      if (wi::neg_p (wi))
+      	sprintf (buf, "-" HOST_WIDE_INT_PRINT_UNSIGNED,
+		 -(unsigned HOST_WIDE_INT) wi.to_shwi ());
+      else
+	sprintf (buf, HOST_WIDE_INT_PRINT_DEC, wi.to_shwi ());
+    }
+  else
+    print_hex (wi, buf);
+}
+
+/* Try to print the signed self in decimal to FILE if the number fits
+   in a HWI.  Other print in hex.  */
+
+void
+print_decs (const wide_int_ref &wi, FILE *file)
+{
+  char buf[WIDE_INT_PRINT_BUFFER_SIZE];
+  print_decs (wi, buf);
+  fputs (buf, file);
+}
+
+/* Try to print the unsigned self in decimal to BUF if the number fits
+   in a HWI.  Other print in hex.  */
+
+void
+print_decu (const wide_int_ref &wi, char *buf)
+{
+  if ((wi.get_precision () <= HOST_BITS_PER_WIDE_INT)
+      || (wi.get_len () == 1 && !wi::neg_p (wi)))
+    sprintf (buf, HOST_WIDE_INT_PRINT_UNSIGNED, wi.to_uhwi ());
+  else
+    print_hex (wi, buf);
+}
+
+/* Try to print the signed self in decimal to FILE if the number fits
+   in a HWI.  Other print in hex.  */
+
+void
+print_decu (const wide_int_ref &wi, FILE *file)
+{
+  char buf[WIDE_INT_PRINT_BUFFER_SIZE];
+  print_decu (wi, buf);
+  fputs (buf, file);
+}
+
+void
+print_hex (const wide_int_ref &val, char *buf)
+{
+  if (val == 0)
+    buf += sprintf (buf, "0x0");
+  else
+    {
+      buf += sprintf (buf, "0x");
+      int start = ROUND_DOWN (val.get_precision (), HOST_BITS_PER_WIDE_INT);
+      int width = val.get_precision () - start;
+      bool first_p = true;
+      for (int i = start; i >= 0; i -= HOST_BITS_PER_WIDE_INT)
+	{
+	  unsigned HOST_WIDE_INT uhwi = wi::extract_uhwi (val, i, width);
+	  if (!first_p)
+	    buf += sprintf (buf, HOST_WIDE_INT_PRINT_PADDED_HEX, uhwi);
+	  else if (uhwi != 0)
+	    {
+	      buf += sprintf (buf, HOST_WIDE_INT_PRINT_HEX_PURE, uhwi);
+	      first_p = false;
+	    }
+	  width = HOST_BITS_PER_WIDE_INT;
+	}
+    }
+}
+
+/* Print one big hex number to FILE.  Note that some assemblers may not
+   accept this for large modes.  */
+void
+print_hex (const wide_int_ref &wi, FILE *file)
+{
+  char buf[WIDE_INT_PRINT_BUFFER_SIZE];
+  print_hex (wi, buf);
+  fputs (buf, file);
+}
+