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/* * This code was written by Rich Felker in 2010; no copyright is claimed. * This code is in the public domain. Attribution is appreciated but * unnecessary. */ #define bittab __fsmu8 #include <stdint.h> #include "libc.h" extern const uint32_t bittab[] ATTR_LIBC_VISIBILITY; /* Upper 6 state bits are a negative integer offset to bound-check next byte */ /* equivalent to: ( (b-0x80) | (b+offset) ) & ~0x3f */ #define OOB(c,b) (((((b)>>3)-0x10)|(((b)>>3)+((int32_t)(c)>>26))) & ~7) /* Interval [a,b). Either a must be 80 or b must be c0, lower 3 bits clear. */ #define R(a,b) ((uint32_t)((a==0x80 ? 0x40-b : -a) << 23)) #define FAILSTATE R(0x80,0x80) #define SA 0xc2u #define SB 0xf4u |