Contents of /tags/mkinitrd-6_1_2/busybox/include/xatonum.h
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Mon May 4 17:23:09 2009 UTC (15 years, 4 months ago) by niro
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Mon May 4 17:23:09 2009 UTC (15 years, 4 months ago) by niro
File MIME type: text/plain
File size: 7046 byte(s)
tagged 'mkinitrd-6_1_2'
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * ascii-to-numbers implementations for busybox |
4 | * |
5 | * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org> |
6 | * |
7 | * Licensed under GPLv2, see file LICENSE in this tarball for details. |
8 | */ |
9 | |
10 | #if __GNUC_PREREQ(4,1) |
11 | # pragma GCC visibility push(hidden) |
12 | #endif |
13 | |
14 | /* Provides extern declarations of functions */ |
15 | #define DECLARE_STR_CONV(type, T, UT) \ |
16 | \ |
17 | unsigned type xstrto##UT##_range_sfx(const char *str, int b, unsigned type l, unsigned type u, const struct suffix_mult *sfx) FAST_FUNC; \ |
18 | unsigned type xstrto##UT##_range(const char *str, int b, unsigned type l, unsigned type u) FAST_FUNC; \ |
19 | unsigned type xstrto##UT##_sfx(const char *str, int b, const struct suffix_mult *sfx) FAST_FUNC; \ |
20 | unsigned type xstrto##UT(const char *str, int b) FAST_FUNC; \ |
21 | unsigned type xato##UT##_range_sfx(const char *str, unsigned type l, unsigned type u, const struct suffix_mult *sfx) FAST_FUNC; \ |
22 | unsigned type xato##UT##_range(const char *str, unsigned type l, unsigned type u) FAST_FUNC; \ |
23 | unsigned type xato##UT##_sfx(const char *str, const struct suffix_mult *sfx) FAST_FUNC; \ |
24 | unsigned type xato##UT(const char *str) FAST_FUNC; \ |
25 | type xstrto##T##_range_sfx(const char *str, int b, type l, type u, const struct suffix_mult *sfx) FAST_FUNC; \ |
26 | type xstrto##T##_range(const char *str, int b, type l, type u) FAST_FUNC; \ |
27 | type xato##T##_range_sfx(const char *str, type l, type u, const struct suffix_mult *sfx) FAST_FUNC; \ |
28 | type xato##T##_range(const char *str, type l, type u) FAST_FUNC; \ |
29 | type xato##T##_sfx(const char *str, const struct suffix_mult *sfx) FAST_FUNC; \ |
30 | type xato##T(const char *str) FAST_FUNC; \ |
31 | |
32 | /* Unsigned long long functions always exist */ |
33 | DECLARE_STR_CONV(long long, ll, ull) |
34 | |
35 | |
36 | /* Provides inline definitions of functions */ |
37 | /* (useful for mapping them to the type of the same width) */ |
38 | #define DEFINE_EQUIV_STR_CONV(narrow, N, W, UN, UW) \ |
39 | \ |
40 | static ALWAYS_INLINE \ |
41 | unsigned narrow xstrto##UN##_range_sfx(const char *str, int b, unsigned narrow l, unsigned narrow u, const struct suffix_mult *sfx) \ |
42 | { return xstrto##UW##_range_sfx(str, b, l, u, sfx); } \ |
43 | static ALWAYS_INLINE \ |
44 | unsigned narrow xstrto##UN##_range(const char *str, int b, unsigned narrow l, unsigned narrow u) \ |
45 | { return xstrto##UW##_range(str, b, l, u); } \ |
46 | static ALWAYS_INLINE \ |
47 | unsigned narrow xstrto##UN##_sfx(const char *str, int b, const struct suffix_mult *sfx) \ |
48 | { return xstrto##UW##_sfx(str, b, sfx); } \ |
49 | static ALWAYS_INLINE \ |
50 | unsigned narrow xstrto##UN(const char *str, int b) \ |
51 | { return xstrto##UW(str, b); } \ |
52 | static ALWAYS_INLINE \ |
53 | unsigned narrow xato##UN##_range_sfx(const char *str, unsigned narrow l, unsigned narrow u, const struct suffix_mult *sfx) \ |
54 | { return xato##UW##_range_sfx(str, l, u, sfx); } \ |
55 | static ALWAYS_INLINE \ |
56 | unsigned narrow xato##UN##_range(const char *str, unsigned narrow l, unsigned narrow u) \ |
57 | { return xato##UW##_range(str, l, u); } \ |
58 | static ALWAYS_INLINE \ |
59 | unsigned narrow xato##UN##_sfx(const char *str, const struct suffix_mult *sfx) \ |
60 | { return xato##UW##_sfx(str, sfx); } \ |
61 | static ALWAYS_INLINE \ |
62 | unsigned narrow xato##UN(const char *str) \ |
63 | { return xato##UW(str); } \ |
64 | static ALWAYS_INLINE \ |
65 | narrow xstrto##N##_range_sfx(const char *str, int b, narrow l, narrow u, const struct suffix_mult *sfx) \ |
66 | { return xstrto##W##_range_sfx(str, b, l, u, sfx); } \ |
67 | static ALWAYS_INLINE \ |
68 | narrow xstrto##N##_range(const char *str, int b, narrow l, narrow u) \ |
69 | { return xstrto##W##_range(str, b, l, u); } \ |
70 | static ALWAYS_INLINE \ |
71 | narrow xato##N##_range_sfx(const char *str, narrow l, narrow u, const struct suffix_mult *sfx) \ |
72 | { return xato##W##_range_sfx(str, l, u, sfx); } \ |
73 | static ALWAYS_INLINE \ |
74 | narrow xato##N##_range(const char *str, narrow l, narrow u) \ |
75 | { return xato##W##_range(str, l, u); } \ |
76 | static ALWAYS_INLINE \ |
77 | narrow xato##N##_sfx(const char *str, const struct suffix_mult *sfx) \ |
78 | { return xato##W##_sfx(str, sfx); } \ |
79 | static ALWAYS_INLINE \ |
80 | narrow xato##N(const char *str) \ |
81 | { return xato##W(str); } \ |
82 | |
83 | /* If long == long long, then just map them one-to-one */ |
84 | #if ULONG_MAX == ULLONG_MAX |
85 | DEFINE_EQUIV_STR_CONV(long, l, ll, ul, ull) |
86 | #else |
87 | /* Else provide extern defs */ |
88 | DECLARE_STR_CONV(long, l, ul) |
89 | #endif |
90 | |
91 | /* Same for int -> [long] long */ |
92 | #if UINT_MAX == ULLONG_MAX |
93 | DEFINE_EQUIV_STR_CONV(int, i, ll, u, ull) |
94 | #elif UINT_MAX == ULONG_MAX |
95 | DEFINE_EQUIV_STR_CONV(int, i, l, u, ul) |
96 | #else |
97 | DECLARE_STR_CONV(int, i, u) |
98 | #endif |
99 | |
100 | /* Specialized */ |
101 | |
102 | int BUG_xatou32_unimplemented(void); |
103 | static ALWAYS_INLINE uint32_t xatou32(const char *numstr) |
104 | { |
105 | if (UINT_MAX == 0xffffffff) |
106 | return xatou(numstr); |
107 | if (ULONG_MAX == 0xffffffff) |
108 | return xatoul(numstr); |
109 | return BUG_xatou32_unimplemented(); |
110 | } |
111 | |
112 | /* Non-aborting kind of convertors: bb_strto[u][l]l */ |
113 | |
114 | /* On exit: errno = 0 only if there was non-empty, '\0' terminated value |
115 | * errno = EINVAL if value was not '\0' terminated, but otherwise ok |
116 | * Return value is still valid, caller should just check whether end[0] |
117 | * is a valid terminating char for particular case. OTOH, if caller |
118 | * requires '\0' terminated input, [s]he can just check errno == 0. |
119 | * errno = ERANGE if value had alphanumeric terminating char ("1234abcg"). |
120 | * errno = ERANGE if value is out of range, missing, etc. |
121 | * errno = ERANGE if value had minus sign for strtouXX (even "-0" is not ok ) |
122 | * return value is all-ones in this case. |
123 | */ |
124 | |
125 | unsigned long long bb_strtoull(const char *arg, char **endp, int base) FAST_FUNC; |
126 | long long bb_strtoll(const char *arg, char **endp, int base) FAST_FUNC; |
127 | |
128 | #if ULONG_MAX == ULLONG_MAX |
129 | static ALWAYS_INLINE |
130 | unsigned long bb_strtoul(const char *arg, char **endp, int base) |
131 | { return bb_strtoull(arg, endp, base); } |
132 | static ALWAYS_INLINE |
133 | long bb_strtol(const char *arg, char **endp, int base) |
134 | { return bb_strtoll(arg, endp, base); } |
135 | #else |
136 | unsigned long bb_strtoul(const char *arg, char **endp, int base) FAST_FUNC; |
137 | long bb_strtol(const char *arg, char **endp, int base) FAST_FUNC; |
138 | #endif |
139 | |
140 | #if UINT_MAX == ULLONG_MAX |
141 | static ALWAYS_INLINE |
142 | unsigned bb_strtou(const char *arg, char **endp, int base) |
143 | { return bb_strtoull(arg, endp, base); } |
144 | static ALWAYS_INLINE |
145 | int bb_strtoi(const char *arg, char **endp, int base) |
146 | { return bb_strtoll(arg, endp, base); } |
147 | #elif UINT_MAX == ULONG_MAX |
148 | static ALWAYS_INLINE |
149 | unsigned bb_strtou(const char *arg, char **endp, int base) |
150 | { return bb_strtoul(arg, endp, base); } |
151 | static ALWAYS_INLINE |
152 | int bb_strtoi(const char *arg, char **endp, int base) |
153 | { return bb_strtol(arg, endp, base); } |
154 | #else |
155 | unsigned bb_strtou(const char *arg, char **endp, int base) FAST_FUNC; |
156 | int bb_strtoi(const char *arg, char **endp, int base) FAST_FUNC; |
157 | #endif |
158 | |
159 | int BUG_bb_strtou32_unimplemented(void); |
160 | static ALWAYS_INLINE |
161 | uint32_t bb_strtou32(const char *arg, char **endp, int base) |
162 | { |
163 | if (sizeof(uint32_t) == sizeof(unsigned)) |
164 | return bb_strtou(arg, endp, base); |
165 | if (sizeof(uint32_t) == sizeof(unsigned long)) |
166 | return bb_strtoul(arg, endp, base); |
167 | return BUG_bb_strtou32_unimplemented(); |
168 | } |
169 | |
170 | /* Floating point */ |
171 | |
172 | double bb_strtod(const char *arg, char **endp) FAST_FUNC; |
173 | |
174 | #if __GNUC_PREREQ(4,1) |
175 | # pragma GCC visibility pop |
176 | #endif |