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