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1 | /* Printing operations with very long integers. | |
2 | Copyright (C) 2012-2020 Free Software Foundation, Inc. | |
3 | Contributed by Kenneth Zadeck <zadeck@naturalbridge.com> | |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU General Public License as published by the | |
9 | Free Software Foundation; either version 3, or (at your option) any | |
10 | later version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT | |
13 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GCC; see the file COPYING3. If not see | |
19 | <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | #include "config.h" | |
22 | #include "system.h" | |
23 | #include "coretypes.h" | |
24 | ||
25 | /* | |
26 | * public printing routines. | |
27 | */ | |
28 | ||
29 | #define BLOCKS_NEEDED(PREC) \ | |
30 | (((PREC) + HOST_BITS_PER_WIDE_INT - 1) / HOST_BITS_PER_WIDE_INT) | |
31 | ||
32 | void | |
33 | print_dec (const wide_int_ref &wi, char *buf, signop sgn) | |
34 | { | |
35 | if (sgn == SIGNED) | |
36 | print_decs (wi, buf); | |
37 | else | |
38 | print_decu (wi, buf); | |
39 | } | |
40 | ||
41 | void | |
42 | print_dec (const wide_int_ref &wi, FILE *file, signop sgn) | |
43 | { | |
44 | if (sgn == SIGNED) | |
45 | print_decs (wi, file); | |
46 | else | |
47 | print_decu (wi, file); | |
48 | } | |
49 | ||
50 | ||
51 | /* Try to print the signed self in decimal to BUF if the number fits | |
52 | in a HWI. Other print in hex. */ | |
53 | ||
54 | void | |
55 | print_decs (const wide_int_ref &wi, char *buf) | |
56 | { | |
57 | if ((wi.get_precision () <= HOST_BITS_PER_WIDE_INT) | |
58 | || (wi.get_len () == 1)) | |
59 | { | |
60 | if (wi::neg_p (wi)) | |
61 | sprintf (buf, "-" HOST_WIDE_INT_PRINT_UNSIGNED, | |
62 | -(unsigned HOST_WIDE_INT) wi.to_shwi ()); | |
63 | else | |
64 | sprintf (buf, HOST_WIDE_INT_PRINT_DEC, wi.to_shwi ()); | |
65 | } | |
66 | else | |
67 | print_hex (wi, buf); | |
68 | } | |
69 | ||
70 | /* Try to print the signed self in decimal to FILE if the number fits | |
71 | in a HWI. Other print in hex. */ | |
72 | ||
73 | void | |
74 | print_decs (const wide_int_ref &wi, FILE *file) | |
75 | { | |
76 | char buf[WIDE_INT_PRINT_BUFFER_SIZE]; | |
77 | print_decs (wi, buf); | |
78 | fputs (buf, file); | |
79 | } | |
80 | ||
81 | /* Try to print the unsigned self in decimal to BUF if the number fits | |
82 | in a HWI. Other print in hex. */ | |
83 | ||
84 | void | |
85 | print_decu (const wide_int_ref &wi, char *buf) | |
86 | { | |
87 | if ((wi.get_precision () <= HOST_BITS_PER_WIDE_INT) | |
88 | || (wi.get_len () == 1 && !wi::neg_p (wi))) | |
89 | sprintf (buf, HOST_WIDE_INT_PRINT_UNSIGNED, wi.to_uhwi ()); | |
90 | else | |
91 | print_hex (wi, buf); | |
92 | } | |
93 | ||
94 | /* Try to print the signed self in decimal to FILE if the number fits | |
95 | in a HWI. Other print in hex. */ | |
96 | ||
97 | void | |
98 | print_decu (const wide_int_ref &wi, FILE *file) | |
99 | { | |
100 | char buf[WIDE_INT_PRINT_BUFFER_SIZE]; | |
101 | print_decu (wi, buf); | |
102 | fputs (buf, file); | |
103 | } | |
104 | ||
105 | void | |
106 | print_hex (const wide_int_ref &val, char *buf) | |
107 | { | |
108 | if (val == 0) | |
109 | buf += sprintf (buf, "0x0"); | |
110 | else | |
111 | { | |
112 | buf += sprintf (buf, "0x"); | |
113 | int start = ROUND_DOWN (val.get_precision (), HOST_BITS_PER_WIDE_INT); | |
114 | int width = val.get_precision () - start; | |
115 | bool first_p = true; | |
116 | for (int i = start; i >= 0; i -= HOST_BITS_PER_WIDE_INT) | |
117 | { | |
118 | unsigned HOST_WIDE_INT uhwi = wi::extract_uhwi (val, i, width); | |
119 | if (!first_p) | |
120 | buf += sprintf (buf, HOST_WIDE_INT_PRINT_PADDED_HEX, uhwi); | |
121 | else if (uhwi != 0) | |
122 | { | |
123 | buf += sprintf (buf, HOST_WIDE_INT_PRINT_HEX_PURE, uhwi); | |
124 | first_p = false; | |
125 | } | |
126 | width = HOST_BITS_PER_WIDE_INT; | |
127 | } | |
128 | } | |
129 | } | |
130 | ||
131 | /* Print one big hex number to FILE. Note that some assemblers may not | |
132 | accept this for large modes. */ | |
133 | void | |
134 | print_hex (const wide_int_ref &wi, FILE *file) | |
135 | { | |
136 | char buf[WIDE_INT_PRINT_BUFFER_SIZE]; | |
137 | print_hex (wi, buf); | |
138 | fputs (buf, file); | |
139 | } | |
140 |