summaryrefslogtreecommitdiff
path: root/gcc/wide-int-print.cc
blob: 9b2893a99b1d041392f8a77d147eb38db58e9fd4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
/* 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,
		 -(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 &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);
}