| 0,0 → 1,31 |
|---|
| /* |
| ** All character classification functions except isascii(). |
| ** Integer argument (c) must be in ASCII range (0-127) for |
| ** dependable answers. |
| */ |
| |
| #define ALNUM 1 |
| #define ALPHA 2 |
| #define CNTRL 4 |
| #define DIGIT 8 |
| #define GRAPH 16 |
| #define LOWER 32 |
| #define PRINT 64 |
| #define PUNCT 128 |
| #define BLANK 256 |
| #define UPPER 512 |
| #define XDIGIT 1024 |
| |
| extern char _is[128]; |
| |
| #define isalnum(c)(_is[c] & ALNUM ) /* 'a'-'z', 'A'-'Z', '0'-'9' */ |
| #define isalpha(c)(_is[c] & ALPHA ) /* 'a'-'z', 'A'-'Z' */ |
| #define iscntrl(c)(_is[c] & CNTRL ) /* 0-31, 127 */ |
| #define isdigit(c)(_is[c] & DIGIT ) /* '0'-'9' */ |
| #define isgraph(c)(_is[c] & GRAPH ) /* '!'-'~' */ |
| #define islower(c)(_is[c] & LOWER ) /* 'a'-'z' */ |
| #define isprint(c)(_is[c] & PRINT ) /* ' '-'~' */ |
| #define ispunct(c)(_is[c] & PUNCT ) /* !alnum && !cntrl && !space */ |
| #define isspace(c)(_is[c] & BLANK ) /* HT, LF, VT, FF, CR, ' ' */ |
| #define isupper(c)(_is[c] & UPPER ) /* 'A'-'Z' */ |
| #define isxdigit(c)(_is[c] & XDIGIT) /* '0'-'9', 'a'-'f', 'A'-'F' */ |