diff options
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/ctype.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/src/include/ctype.h b/src/include/ctype.h index a79395d2a..7740443d9 100644 --- a/src/include/ctype.h +++ b/src/include/ctype.h @@ -6,10 +6,9 @@ * Character types */ -#define isdigit(c) ((c & 0x04) != 0) -#define islower(c) ((c & 0x02) != 0) -//#define isspace(c) ((c & 0x20) != 0) -#define isupper(c) ((c & 0x01) != 0) +#define isdigit(c) ((c) >= '0' && (c) <= '9') +#define islower(c) ((c) >= 'a' && (c) <= 'z') +#define isupper(c) ((c) >= 'A' && (c) <= 'Z') static inline unsigned char tolower(unsigned char c) { |