5 return (unsigned) c
< 128u;
10 return c
== ' ' || c
== '\t';
15 return (unsigned) ((c
| 0x20) - 'a') < 26u;
20 return (unsigned) (c
- '0') < 10u;
25 return (unsigned) ((c
| 0x20) - 'a') < 26u ||
26 (unsigned) (c
- '0') < 10u;
31 return (unsigned) (c
- 9) < 5u || c
== ' ';
36 return (unsigned) (c
- 'A') < 26u;
41 return (unsigned) (c
- 'a') < 26u;
46 return (unsigned) (c
- 'A') < 26u ? c
+ ('a' - 'A') : c
;
51 return (unsigned) (c
- 'a') < 26u ? c
+ ('A' - 'a') : c
;
56 return (c
& 0x7f) >= 32 && (c
& 0x7f) < 127;