Merge in wide-int.

From-SVN: r210113

1 files changed, 145 insertions, 0 deletions

diff --git a/gcc/wide-int-print.cc b/gcc/wide-int-print.cc
new file mode 100644
index 0000000..c79c781
--- /dev/null
+++ b/gcc/wide-int-print.cc
@@ -0,0 +1,145 @@
+/* Printing operations with very long integers.
+   Copyright (C) 2012-2013 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"
+#include "tm.h"
+#include "hwint.h"
+#include "wide-int.h"
+#include "wide-int-print.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, -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 &wi, char *buf)
+{
+  int i = wi.get_len ();
+
+  if (wi == 0)
+    buf += sprintf (buf, "0x0");
+  else
+    {
+      if (wi::neg_p (wi))
+	{
+	  int j;
+	  /* If the number is negative, we may need to pad value with
+	     0xFFF...  because the leading elements may be missing and
+	     we do not print a '-' with hex.  */
+	  buf += sprintf (buf, "0x");
+	  for (j = BLOCKS_NEEDED (wi.get_precision ()); j > i; j--)
+	    buf += sprintf (buf, HOST_WIDE_INT_PRINT_PADDED_HEX, (HOST_WIDE_INT) -1);
+
+	}
+      else
+	buf += sprintf (buf, "0x"HOST_WIDE_INT_PRINT_HEX_PURE, wi.elt (--i));
+
+      while (--i >= 0)
+	buf += sprintf (buf, HOST_WIDE_INT_PRINT_PADDED_HEX, wi.elt (i));
+    }
+}
+
+/* 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);
+}
+