Contents of /tags/mkinitrd-6_3_2/busybox/include/xatonum.h
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Tue Sep 14 20:33:28 2010 UTC (14 years ago) by niro
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Tue Sep 14 20:33:28 2010 UTC (14 years ago) by niro
File MIME type: text/plain
File size: 7154 byte(s)
tagged 'mkinitrd-6_3_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 | PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN |
11 | |
12 | /* Provides extern declarations of functions */ |
13 | #define DECLARE_STR_CONV(type, T, UT) \ |
14 | \ |
15 | unsigned type xstrto##UT##_range_sfx(const char *str, int b, unsigned type l, unsigned type u, const struct suffix_mult *sfx) FAST_FUNC; \ |
16 | unsigned type xstrto##UT##_range(const char *str, int b, unsigned type l, unsigned type u) FAST_FUNC; \ |
17 | unsigned type xstrto##UT##_sfx(const char *str, int b, const struct suffix_mult *sfx) FAST_FUNC; \ |
18 | unsigned type xstrto##UT(const char *str, int b) FAST_FUNC; \ |
19 | unsigned type xato##UT##_range_sfx(const char *str, unsigned type l, unsigned type u, const struct suffix_mult *sfx) FAST_FUNC; \ |
20 | unsigned type xato##UT##_range(const char *str, unsigned type l, unsigned type u) FAST_FUNC; \ |
21 | unsigned type xato##UT##_sfx(const char *str, const struct suffix_mult *sfx) FAST_FUNC; \ |
22 | unsigned type xato##UT(const char *str) FAST_FUNC; \ |
23 | type xstrto##T##_range_sfx(const char *str, int b, type l, type u, const struct suffix_mult *sfx) FAST_FUNC; \ |
24 | type xstrto##T##_range(const char *str, int b, type l, type u) FAST_FUNC; \ |
25 | type xstrto##T(const char *str, int b) FAST_FUNC; \ |
26 | type xato##T##_range_sfx(const char *str, type l, type u, const struct suffix_mult *sfx) FAST_FUNC; \ |
27 | type xato##T##_range(const char *str, type l, type u) FAST_FUNC; \ |
28 | type xato##T##_sfx(const char *str, const struct suffix_mult *sfx) FAST_FUNC; \ |
29 | type xato##T(const char *str) FAST_FUNC; \ |
30 | |
31 | /* Unsigned long long functions always exist */ |
32 | DECLARE_STR_CONV(long long, ll, ull) |
33 | |
34 | |
35 | /* Provides inline definitions of functions */ |
36 | /* (useful for mapping them to the type of the same width) */ |
37 | #define DEFINE_EQUIV_STR_CONV(narrow, N, W, UN, UW) \ |
38 | \ |
39 | static ALWAYS_INLINE \ |
40 | unsigned narrow xstrto##UN##_range_sfx(const char *str, int b, unsigned narrow l, unsigned narrow u, const struct suffix_mult *sfx) \ |
41 | { return xstrto##UW##_range_sfx(str, b, l, u, sfx); } \ |
42 | static ALWAYS_INLINE \ |
43 | unsigned narrow xstrto##UN##_range(const char *str, int b, unsigned narrow l, unsigned narrow u) \ |
44 | { return xstrto##UW##_range(str, b, l, u); } \ |
45 | static ALWAYS_INLINE \ |
46 | unsigned narrow xstrto##UN##_sfx(const char *str, int b, const struct suffix_mult *sfx) \ |
47 | { return xstrto##UW##_sfx(str, b, sfx); } \ |
48 | static ALWAYS_INLINE \ |
49 | unsigned narrow xstrto##UN(const char *str, int b) \ |
50 | { return xstrto##UW(str, b); } \ |
51 | static ALWAYS_INLINE \ |
52 | unsigned narrow xato##UN##_range_sfx(const char *str, unsigned narrow l, unsigned narrow u, const struct suffix_mult *sfx) \ |
53 | { return xato##UW##_range_sfx(str, l, u, sfx); } \ |
54 | static ALWAYS_INLINE \ |
55 | unsigned narrow xato##UN##_range(const char *str, unsigned narrow l, unsigned narrow u) \ |
56 | { return xato##UW##_range(str, l, u); } \ |
57 | static ALWAYS_INLINE \ |
58 | unsigned narrow xato##UN##_sfx(const char *str, const struct suffix_mult *sfx) \ |
59 | { return xato##UW##_sfx(str, sfx); } \ |
60 | static ALWAYS_INLINE \ |
61 | unsigned narrow xato##UN(const char *str) \ |
62 | { return xato##UW(str); } \ |
63 | static ALWAYS_INLINE \ |
64 | narrow xstrto##N##_range_sfx(const char *str, int b, narrow l, narrow u, const struct suffix_mult *sfx) \ |
65 | { return xstrto##W##_range_sfx(str, b, l, u, sfx); } \ |
66 | static ALWAYS_INLINE \ |
67 | narrow xstrto##N##_range(const char *str, int b, narrow l, narrow u) \ |
68 | { return xstrto##W##_range(str, b, l, u); } \ |
69 | static ALWAYS_INLINE \ |
70 | narrow xstrto##N(const char *str, int b) \ |
71 | { return xstrto##W(str, b); } \ |
72 | static ALWAYS_INLINE \ |
73 | narrow xato##N##_range_sfx(const char *str, narrow l, narrow u, const struct suffix_mult *sfx) \ |
74 | { return xato##W##_range_sfx(str, l, u, sfx); } \ |
75 | static ALWAYS_INLINE \ |
76 | narrow xato##N##_range(const char *str, narrow l, narrow u) \ |
77 | { return xato##W##_range(str, l, u); } \ |
78 | static ALWAYS_INLINE \ |
79 | narrow xato##N##_sfx(const char *str, const struct suffix_mult *sfx) \ |
80 | { return xato##W##_sfx(str, sfx); } \ |
81 | static ALWAYS_INLINE \ |
82 | narrow xato##N(const char *str) \ |
83 | { return xato##W(str); } \ |
84 | |
85 | /* If long == long long, then just map them one-to-one */ |
86 | #if ULONG_MAX == ULLONG_MAX |
87 | DEFINE_EQUIV_STR_CONV(long, l, ll, ul, ull) |
88 | #else |
89 | /* Else provide extern defs */ |
90 | DECLARE_STR_CONV(long, l, ul) |
91 | #endif |
92 | |
93 | /* Same for int -> [long] long */ |
94 | #if UINT_MAX == ULLONG_MAX |
95 | DEFINE_EQUIV_STR_CONV(int, i, ll, u, ull) |
96 | #elif UINT_MAX == ULONG_MAX |
97 | DEFINE_EQUIV_STR_CONV(int, i, l, u, ul) |
98 | #else |
99 | DECLARE_STR_CONV(int, i, u) |
100 | #endif |
101 | |
102 | /* Specialized */ |
103 | |
104 | uint32_t BUG_xatou32_unimplemented(void); |
105 | static ALWAYS_INLINE uint32_t xatou32(const char *numstr) |
106 | { |
107 | if (UINT_MAX == 0xffffffff) |
108 | return xatou(numstr); |
109 | if (ULONG_MAX == 0xffffffff) |
110 | return xatoul(numstr); |
111 | return BUG_xatou32_unimplemented(); |
112 | } |
113 | |
114 | /* Non-aborting kind of convertors: bb_strto[u][l]l */ |
115 | |
116 | /* On exit: errno = 0 only if there was non-empty, '\0' terminated value |
117 | * errno = EINVAL if value was not '\0' terminated, but otherwise ok |
118 | * Return value is still valid, caller should just check whether end[0] |
119 | * is a valid terminating char for particular case. OTOH, if caller |
120 | * requires '\0' terminated input, [s]he can just check errno == 0. |
121 | * errno = ERANGE if value had alphanumeric terminating char ("1234abcg"). |
122 | * errno = ERANGE if value is out of range, missing, etc. |
123 | * errno = ERANGE if value had minus sign for strtouXX (even "-0" is not ok ) |
124 | * return value is all-ones in this case. |
125 | */ |
126 | |
127 | unsigned long long bb_strtoull(const char *arg, char **endp, int base) FAST_FUNC; |
128 | long long bb_strtoll(const char *arg, char **endp, int base) FAST_FUNC; |
129 | |
130 | #if ULONG_MAX == ULLONG_MAX |
131 | static ALWAYS_INLINE |
132 | unsigned long bb_strtoul(const char *arg, char **endp, int base) |
133 | { return bb_strtoull(arg, endp, base); } |
134 | static ALWAYS_INLINE |
135 | long bb_strtol(const char *arg, char **endp, int base) |
136 | { return bb_strtoll(arg, endp, base); } |
137 | #else |
138 | unsigned long bb_strtoul(const char *arg, char **endp, int base) FAST_FUNC; |
139 | long bb_strtol(const char *arg, char **endp, int base) FAST_FUNC; |
140 | #endif |
141 | |
142 | #if UINT_MAX == ULLONG_MAX |
143 | static ALWAYS_INLINE |
144 | unsigned bb_strtou(const char *arg, char **endp, int base) |
145 | { return bb_strtoull(arg, endp, base); } |
146 | static ALWAYS_INLINE |
147 | int bb_strtoi(const char *arg, char **endp, int base) |
148 | { return bb_strtoll(arg, endp, base); } |
149 | #elif UINT_MAX == ULONG_MAX |
150 | static ALWAYS_INLINE |
151 | unsigned bb_strtou(const char *arg, char **endp, int base) |
152 | { return bb_strtoul(arg, endp, base); } |
153 | static ALWAYS_INLINE |
154 | int bb_strtoi(const char *arg, char **endp, int base) |
155 | { return bb_strtol(arg, endp, base); } |
156 | #else |
157 | unsigned bb_strtou(const char *arg, char **endp, int base) FAST_FUNC; |
158 | int bb_strtoi(const char *arg, char **endp, int base) FAST_FUNC; |
159 | #endif |
160 | |
161 | uint32_t BUG_bb_strtou32_unimplemented(void); |
162 | static ALWAYS_INLINE |
163 | uint32_t bb_strtou32(const char *arg, char **endp, int base) |
164 | { |
165 | if (sizeof(uint32_t) == sizeof(unsigned)) |
166 | return bb_strtou(arg, endp, base); |
167 | if (sizeof(uint32_t) == sizeof(unsigned long)) |
168 | return bb_strtoul(arg, endp, base); |
169 | return BUG_bb_strtou32_unimplemented(); |
170 | } |
171 | |
172 | /* Floating point */ |
173 | |
174 | double bb_strtod(const char *arg, char **endp) FAST_FUNC; |
175 | |
176 | POP_SAVED_FUNCTION_VISIBILITY |