Symbol: to_digit
lib/libc/stdio/vfwprintf.c
251
#define to_digit(c) ((c) - '0')
lib/libc/stdio/vsnprintf_ss.c
72
#define to_digit(c) ((c) - '0')
sys/kern/subr_prf.c
1185
#define to_digit(c) ((c) - '0')