2 * UCW Library -- Conversions of Strings to Numbers: Declarations
4 * (c) 2010 Daniel Fiala <danfiala@ucw.cz>
6 * This software may be freely distributed and used according to the terms
7 * of the GNU Lesser General Public License.
13 // Set (flags & 0x1f) in the range 1 to 31 to denote the default base of the number
14 enum str_to_num_flags {
15 STN_SIGNED = 0x20, // The resulting range is signed
16 STN_MINUS = 0x40, // Allow optional '-' sign
17 STN_PLUS = 0x80, // Allow optional '+' sign
18 STN_TRUNC = 0x100, // Allow range overflow -> truncate to the allowed range
19 STN_DEC = 0x200, // Support decimal numbers (currently no prefix)
20 STN_HEX = 0x400, // Support hexadecimal numbers (0x...)
21 STN_BIN = 0x800, // Support binary numbers (0b...)
22 STN_OCT = 0x1000, // Support octal numbers (0o...)
23 STN_OCT0 = 0x2000, // Support octal numbers (0[0-7]...)
24 STN_UNDERSCORE = 0x4000, // Number can contain underscore characters to increase readability (eg. 1_000_000)
25 STN_WHOLE = 0x8000, // Number can be terminated only by \0 character
28 #define STN_DBASES_MASK 0x1F
29 #define STN_SIGNS (STN_MINUS | STN_PLUS)
30 #define STN_BASES (STN_DEC | STN_HEX | STN_BIN | STN_OCT)
31 #define STN_BASES0 (STN_BASES | STN_OCT0)
32 #define STN_FLAGS (STN_MINUS | STN_PLUS | STN_BASES)
33 #define STN_UFLAGS (STN_FLAGS | STN_UNDERSCORE)
34 #define STN_SFLAGS (STN_FLAGS | STN_SIGNED)
35 #define STN_USFLAGS (STN_SFLAGS | STN_UNDERSCORE)
37 #define STN_DECLARE_CONVERTOR(type, suffix) \
38 const char *str_to_##suffix(type *num, const char *str, const char **next, const uns flags)
40 #define STN_SIGNED_CONVERTOR(type, suffix, usuffix) \
41 static inline const char *str_to_##suffix(type *num, const char *str, const char **next, const uns flags) \
43 return str_to_##usuffix((void *) num, str, next, flags | STN_SIGNED | STN_PLUS | STN_MINUS); \
46 STN_DECLARE_CONVERTOR(uns, uns);
47 STN_SIGNED_CONVERTOR(int, int, uns)
49 STN_DECLARE_CONVERTOR(uintmax_t, uintmax);
50 STN_SIGNED_CONVERTOR(intmax_t, intmax, uintmax)