ref: 728cb9011f9612e969ec8747aa1de2a30959c38a
dir: /sys/include/ctype.h/
#pragma src "/sys/src/libc/port" #pragma lib "libc.a" #define _U 01 #define _L 02 #define _N 04 #define _S 010 #define _P 020 #define _C 040 #define _B 0100 #define _X 0200 extern unsigned char _ctype[]; #define isalpha(c) (_ctype[(unsigned char)(c)]&(_U|_L)) #define isupper(c) (_ctype[(unsigned char)(c)]&_U) #define islower(c) (_ctype[(unsigned char)(c)]&_L) #define isdigit(c) (_ctype[(unsigned char)(c)]&_N) #define isxdigit(c) (_ctype[(unsigned char)(c)]&_X) #define isspace(c) (_ctype[(unsigned char)(c)]&_S) #define ispunct(c) (_ctype[(unsigned char)(c)]&_P) #define isalnum(c) (_ctype[(unsigned char)(c)]&(_U|_L|_N)) #define isprint(c) (_ctype[(unsigned char)(c)]&(_P|_U|_L|_N|_B)) #define isgraph(c) (_ctype[(unsigned char)(c)]&(_P|_U|_L|_N)) #define iscntrl(c) (_ctype[(unsigned char)(c)]&_C) #define isascii(c) ((unsigned char)(c)<=0177) #define _toupper(c) ((c)-'a'+'A') #define _tolower(c) ((c)-'A'+'a') #define toascii(c) ((c)&0177)