ref: 16ac0a93b39ea62401f2d2edb5f203ffe2e746b0 dir: /lib/c/isprint.c/
#define __USE_MACROS #include <ctype.h> #undef isprint int isprint(int c) { return (__ctype+1)[c] & (_P|_U|_L|_D|_SP); }