ref: bde52bcdc34eb9fafe7336fa9a23110962a01612
dir: /libc/include/z80/ctype.h/
#ifndef _CTYPE_H #define _CTYPE_H int isalnum(int c); int isalpha(int c); int islower(int c); int isupper(int c); int isdigit(int c); int isxdigit(int c); int iscntrl(int c); int isgraph(int c); int isspace(int c); int isblank(int c); int isprint(int c); int ispunct(int c); int tolower(int c); int toupper(int c); #endif