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70 lines
2.8 KiB
70 lines
2.8 KiB
2 months ago
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/*
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* UCW Library -- Conversions of Strings to Numbers: Declarations
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*
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* (c) 2010 Daniel Fiala <danfiala@ucw.cz>
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*
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* This software may be freely distributed and used according to the terms
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* of the GNU Lesser General Public License.
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*/
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#ifndef _STRTONUM_H
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#define _STRTONUM_H
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#ifdef CONFIG_UCW_CLEAN_ABI
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#define str_to_u32 ucw_str_to_u32
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#define str_to_u64 ucw_str_to_u64
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#define str_to_uint ucw_str_to_uint
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#define str_to_uintmax ucw_str_to_uintmax
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#define str_to_uns ucw_str_to_uns
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#endif
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// Set (flags & 0x1f) in the range 1 to 31 to denote the default base of the number
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enum str_to_num_flags {
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STN_SIGNED = 0x20, // The resulting range is signed
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STN_MINUS = 0x40, // Allow optional '-' sign
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STN_PLUS = 0x80, // Allow optional '+' sign
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STN_TRUNC = 0x100, // Allow range overflow -> truncate to the allowed range
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STN_DEC = 0x200, // Support decimal numbers (currently no prefix)
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STN_HEX = 0x400, // Support hexadecimal numbers (0x...)
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STN_BIN = 0x800, // Support binary numbers (0b...)
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STN_OCT = 0x1000, // Support octal numbers (0o...)
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STN_OCT0 = 0x2000, // Support octal numbers (0[0-7]...)
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STN_UNDERSCORE = 0x4000, // Number can contain underscore characters to increase readability (eg. 1_000_000)
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STN_WHOLE = 0x8000, // Number can be terminated only by \0 character
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};
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#define STN_DBASES_MASK 0x1F
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#define STN_SIGNS (STN_MINUS | STN_PLUS)
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#define STN_BASES (STN_DEC | STN_HEX | STN_BIN | STN_OCT)
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#define STN_BASES0 (STN_BASES | STN_OCT0)
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#define STN_FLAGS (STN_MINUS | STN_PLUS | STN_BASES)
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#define STN_UFLAGS (STN_FLAGS | STN_UNDERSCORE)
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#define STN_SFLAGS (STN_FLAGS | STN_SIGNED)
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#define STN_USFLAGS (STN_SFLAGS | STN_UNDERSCORE)
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#define STN_DECLARE_CONVERTOR(type, suffix) \
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const char *str_to_##suffix(type *num, const char *str, const char **next, const uint flags)
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#define STN_SIGNED_CONVERTOR(type, suffix, usuffix) \
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static inline const char *str_to_##suffix(type *num, const char *str, const char **next, const uint flags) \
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{ \
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return str_to_##usuffix((void *) num, str, next, flags | STN_SIGNED | STN_PLUS | STN_MINUS); \
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}
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STN_DECLARE_CONVERTOR(uint, uint);
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STN_SIGNED_CONVERTOR(int, int, uint)
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STN_DECLARE_CONVERTOR(u32, u32);
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STN_SIGNED_CONVERTOR(s32, s32, u32)
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STN_DECLARE_CONVERTOR(u64, u64);
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STN_SIGNED_CONVERTOR(s64, s64, u64)
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STN_DECLARE_CONVERTOR(uintmax_t, uintmax);
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STN_SIGNED_CONVERTOR(intmax_t, intmax, uintmax)
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// FIXME: For backward compatibility, will be removed soon
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STN_DECLARE_CONVERTOR(uns, uns);
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#endif
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