1 /* GCC Quad-Precision Math Library
2 Copyright (C) 2011 Free Software Foundation, Inc.
3 Written by Jakub Jelinek <jakub@redhat.com>
4
5 This file is part of the libquadmath library.
6 Libquadmath is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public
8 License as published by the Free Software Foundation; either
9 version 2 of the License, or (at your option) any later version.
10
11 Libquadmath is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Library General Public License for more details.
15
16 You should have received a copy of the GNU Library General Public
17 License along with libquadmath; see the file COPYING.LIB. If
18 not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
19 Boston, MA 02110-1301, USA. */
20
21 #include <stdlib.h>
22 #include <stdio.h>
23 #ifdef HAVE_LIMITS_H
24 #include <limits.h>
25 #endif
26 #ifdef HAVE_LANGINFO_H
27 #include <langinfo.h>
28 #endif
29 #ifdef HAVE_CTYPE_H
30 #include <ctype.h>
31 #endif
32 #ifdef HAVE_WCHAR_H
33 #include <wchar.h>
34 #endif
35 #ifdef HAVE_WCTYPE_H
36 #include <wctype.h>
37 #endif
38 #ifdef HAVE_PRINTF_HOOKS
39 #include <printf.h>
40 #endif
41 #ifdef HAVE_LOCALE_H
42 #include <locale.h>
43 #endif
44 #include "quadmath-imp.h"
45 #include "gmp-impl.h"
46
47 #ifdef HAVE_WCHAR_H
48 #define L_(x) L##x
49 #else
50 #define L_(x) x
51 #undef wchar_t
52 #undef wint_t
53 #undef putwc
54 #undef WEOF
55 #define wchar_t char
56 #define wint_t int
57 #define putwc(c,f) putc(c,f)
58 #define WEOF EOF
59 #endif
60
61 #ifndef HAVE_CTYPE_H
62 /* Won't work for EBCDIC. */
63 #undef isupper
64 #undef isdigit
65 #undef isxdigit
66 #undef tolower
67 #define isupper(x) \
68 ({__typeof(x) __is_x = (x); __is_x >= 'A' && __is_x <= 'Z'; })
69 #define isdigit(x) \
70 ({__typeof(x) __is_x = (x); __is_x >= '0' && __is_x <= '9'; })
71 #define isxdigit(x) \
72 ({__typeof(x) __is_x = (x); \
73 (__is_x >= '0' && __is_x <= '9') \
74 || ((x) >= 'A' && (x) <= 'F') \
75 || ((x) >= 'a' && (x) <= 'f'); })
76 #define tolower(x) \
77 ({__typeof(x) __is_x = (x); \
78 (__is_x >= 'A' && __is_x <= 'Z') ? __is_x - 'A' + 'a' : __is_x; })
79 #endif
80
81 #ifndef CHAR_MAX
82 #ifdef __CHAR_UNSIGNED__
83 #define CHAR_MAX (2 * __SCHAR_MAX__ + 1)
84 #else
85 #define CHAR_MAX __SCHAR_MAX__
86 #endif
87 #endif
88
89 #ifndef HAVE_PRINTF_HOOKS
90 #define printf_info __quadmath_printf_info
91 struct printf_info
92 {
93 int prec; /* Precision. */
94 int width; /* Width. */
95 wchar_t spec; /* Format letter. */
96 unsigned int is_long_double:1;/* L flag. */
97 unsigned int is_short:1; /* h flag. */
98 unsigned int is_long:1; /* l flag. */
99 unsigned int alt:1; /* # flag. */
100 unsigned int space:1; /* Space flag. */
101 unsigned int left:1; /* - flag. */
102 unsigned int showsign:1; /* + flag. */
103 unsigned int group:1; /* ' flag. */
104 unsigned int extra:1; /* For special use. */
105 unsigned int is_char:1; /* hh flag. */
106 unsigned int wide:1; /* Nonzero for wide character streams. */
107 unsigned int i18n:1; /* I flag. */
108 unsigned short int user; /* Bits for user-installed modifiers. */
109 wchar_t pad; /* Padding character. */
110 };
111 #endif
112
113 struct __quadmath_printf_file
114 {
115 FILE *fp;
116 char *str;
117 size_t size;
118 size_t len;
119 int file_p;
120 };
121
122 int
123 __quadmath_printf_fp (struct __quadmath_printf_file *fp,
124 const struct printf_info *info,
125 const void *const *args) attribute_hidden;
126 int
127 __quadmath_printf_fphex (struct __quadmath_printf_file *fp,
128 const struct printf_info *info,
129 const void *const *args) attribute_hidden;
130
131 size_t __quadmath_do_pad (struct __quadmath_printf_file *fp, int wide,
132 int c, size_t n) attribute_hidden;
133
134 static inline __attribute__((__unused__)) size_t
135 __quadmath_do_put (struct __quadmath_printf_file *fp, int wide,
136 const char *s, size_t n)
137 {
138 size_t len;
139 if (fp->file_p)
140 {
141 if (wide)
142 {
143 size_t cnt;
144 const wchar_t *ls = (const wchar_t *) s;
145 for (cnt = 0; cnt < n; cnt++)
146 if (putwc (ls[cnt], fp->fp) == WEOF)
147 break;
148 return cnt;
149 }
150 return fwrite (s, 1, n, fp->fp);
151 }
152 len = MIN (fp->size, n);
153 memcpy (fp->str, s, len);
154 fp->str += len;
155 fp->size -= len;
156 fp->len += n;
157 return n;
158 }
159
160 static inline __attribute__((__unused__)) int
161 __quadmath_do_putc (struct __quadmath_printf_file *fp, int wide,
162 wchar_t c)
163 {
164 if (fp->file_p)
165 return wide ? (int) putwc (c, fp->fp) : putc (c, fp->fp);
166 if (fp->size)
167 {
168 *(fp->str++) = c;
169 fp->size--;
170 }
171 fp->len++;
172 return (unsigned char) c;
173 }
174
175 #define PUT(f, s, n) __quadmath_do_put (f, wide, s, n)
176 #define PAD(f, c, n) __quadmath_do_pad (f, wide, c, n)
177 #define PUTC(c, f) __quadmath_do_putc (f, wide, c)
178
179 #define nl_langinfo_wc(x) \
180 ({ union { const char *mb; wchar_t wc; } u; u.mb = nl_langinfo (x); u.wc; })
181
182 #undef _itoa
183 #define _itoa __quadmath_itoa
184
185 #undef NAN
186 #define NAN __builtin_nanf ("")