mirror of
https://github.com/jart/cosmopolitan.git
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fa20edc44d
- Remove most __ASSEMBLER__ __LINKER__ ifdefs - Rename libc/intrin/bits.h to libc/serialize.h - Block pthread cancelation in fchmodat() polyfill - Remove `clang-format off` statements in third_party
28 lines
1.1 KiB
C
28 lines
1.1 KiB
C
#ifndef COSMOPOLITAN_LIBC_STR_UTF16_H_
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#define COSMOPOLITAN_LIBC_STR_UTF16_H_
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#include "libc/intrin/likely.h"
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#define UTF16_MASK 0xfc00
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#define UTF16_MOAR 0xd800 /* 0xD800..0xDBFF */
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#define UTF16_CONT 0xdc00 /* 0xDC00..0xDFFF */
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COSMOPOLITAN_C_START_
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#define IsSurrogate(wc) ((0xf800 & (wc)) == 0xd800)
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#define IsHighSurrogate(wc) ((UTF16_MASK & (wc)) == UTF16_MOAR)
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#define IsLowSurrogate(wc) ((UTF16_MASK & (wc)) == UTF16_CONT)
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#define IsUcs2(wc) (((65535 & (wc)) >> 11) != 27)
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#define IsUtf16Cont(wc) IsLowSurrogate(wc) /* TODO: DELETE */
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#define MergeUtf16(hi, lo) ((((hi)-0xD800) << 10) + ((lo)-0xDC00) + 0x10000)
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#define EncodeUtf16(wc) \
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(LIKELY((0x0000 <= (wc) && (wc) <= 0xFFFF) || \
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(0xE000 <= (wc) && (wc) <= 0xFFFF)) \
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? (wc) \
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: 0x10000 <= (wc) && (wc) <= 0x10FFFF \
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? (((((wc)-0x10000) >> 10) + 0xD800) | \
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(unsigned)((((wc)-0x10000) & 1023) + 0xDC00) << 16) \
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: 0xFFFD)
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COSMOPOLITAN_C_END_
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#endif /* COSMOPOLITAN_LIBC_STR_UTF16_H_ */
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