isdigit 698 arch/powerpc/kernel/prom_init.c #define isdigit(c) ('0' <= (c) && (c) <= '9') isdigit 5 arch/x86/boot/ctype.h static inline int isdigit(int ch) isdigit 26 include/linux/ctype.h static inline int isdigit(int c) isdigit 30 tools/include/linux/ctype.h #define isdigit(c) __isdigit(c) isdigit 2367 tools/include/nolibc/nolibc.h int isdigit(int c)