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Add Musl multibyte functions

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These are standard functions that are needed to help support the Skull
language. Note that normally this codebase uses libc/str/thompike.h

See #105
This commit is contained in:
Justine Tunney 2021-03-06 09:52:29 -08:00
parent cfd453d125
commit 11ec99931b
28 changed files with 1064 additions and 131 deletions
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19
libc/str/mb.internal.h Normal file
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#ifndef COSMOPOLITAN_LIBC_STR_MB_INTERNAL_H_
#define COSMOPOLITAN_LIBC_STR_MB_INTERNAL_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
#define SA 0xc2u
#define SB 0xf4u
#define CODEUNIT(c) (0xdfff & (signed char)(c))
#define IS_CODEUNIT(c) ((unsigned)(c)-0xdf80 < 0x80)
#define R(a, b) ((uint32_t)((a == 0x80 ? 0x40u - b : 0u - a) << 23))
#define FAILSTATE R(0x80, 0x80)
#define OOB(c, b) \
(((((b) >> 3) - 0x10) | (((b) >> 3) + ((int32_t)(c) >> 26))) & ~7)
extern const uint32_t kMbBittab[51];
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_STR_MB_INTERNAL_H_ */