cosmopolitan/libc/str/thompike.h
Justine Tunney 7d25fb0090 Import some Lua documentation
I personally find it easier to read the documentation in Emacs
using JavaDoc style comments.
2021-08-22 15:03:04 -07:00

11 lines
456 B
C

#ifndef COSMOPOLITAN_LIBC_STR_THOMPIKE_H_
#define COSMOPOLITAN_LIBC_STR_THOMPIKE_H_
#include "libc/nexgen32e/bsr.h"
#define ThomPikeCont(x) (0200 == (0300 & (x)))
#define ThomPikeByte(x) ((x) & (((1 << ThomPikeMsb(x)) - 1) | 3))
#define ThomPikeLen(x) (7 - ThomPikeMsb(x))
#define ThomPikeMsb(x) ((255 & (x)) < 252 ? bsr(255 & ~(x)) : 1)
#define ThomPikeMerge(x, y) ((x) << 6 | 077 & (y))
#endif /* COSMOPOLITAN_LIBC_STR_THOMPIKE_H_ */