bin/sh/syntax.h

82

#define is_digit(c) ((unsigned)((c) - '0') <= 9)

games/rogue/message.c

354

is_digit(int ch)

lib/libc/stdio/vfwprintf.c

252

#define is_digit(c) ((unsigned)to_digit(c) <= 9)

lib/libc/stdio/vsnprintf_ss.c

73

#define is_digit(c) ((unsigned)to_digit(c) <= 9)

lib/libc/time/localtime.c

1456

is_digit(char c)

lib/libc/time/zdump.c

98

is_digit(char c)

lib/libc/time/zic.c

317

is_digit(char c)

sys/kern/subr_prf.c

1186

#define is_digit(c) ((unsigned)to_digit(c) <= 9)