isdigit            71 bsp/drv/lib/ctype.c isdigit(int c)
isdigit            36 sys/lib/vsprintf.c #define isdigit(c)  ((u_int)((c) - '0') < 10)
isdigit            33 usr/lib/libc/ctype/isdigit.c isdigit(int c)
isdigit            39 usr/lib/libsa/vsprintf.c #define isdigit(c)  ((unsigned)((c) - '0') < 10)