diff options
Diffstat (limited to 'libc/include/ctype.h')
| -rw-r--r-- | libc/include/ctype.h | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/libc/include/ctype.h b/libc/include/ctype.h index ed22ef7..a724a4c 100644 --- a/libc/include/ctype.h +++ b/libc/include/ctype.h @@ -21,18 +21,20 @@ extern unsigned char __ctype[]; #define _tolower(c) ((c)^0x20) #define toascii(c) ((c)&0x7F) +#define __CT(c) (__ctype[1+(unsigned char)c]) + /* Note the '!!' is a cast to 'bool' and even BCC deletes it in an if() */ -#define isalnum(c) (!!(__ctype[(int) c]&(__CT_u|__CT_l|__CT_d))) -#define isalpha(c) (!!(__ctype[(int) c]&(__CT_u|__CT_l))) +#define isalnum(c) (!!(__CT(c)&(__CT_u|__CT_l|__CT_d))) +#define isalpha(c) (!!(__CT(c)&(__CT_u|__CT_l))) #define isascii(c) (!((c)&~0x7F)) -#define iscntrl(c) (!!(__ctype[(int) c]&__CT_c)) -#define isdigit(c) (!!(__ctype[(int) c]&__CT_d)) -#define isgraph(c) (!(__ctype[(int) c]&(__CT_c|__CT_s))) -#define islower(c) (!!(__ctype[(int) c]&__CT_l)) -#define isprint(c) (!(__ctype[(int) c]&__CT_c)) -#define ispunct(c) (!!(__ctype[(int) c]&__CT_p)) -#define isspace(c) (!!(__ctype[(int) c]&__CT_s)) -#define isupper(c) (!!(__ctype[(int) c]&__CT_u)) -#define isxdigit(c) (!!(__ctype[(int) c]&__CT_x)) +#define iscntrl(c) (!!(__CT(c)&__CT_c)) +#define isdigit(c) (!!(__CT(c)&__CT_d)) +#define isgraph(c) (!(__CT(c)&(__CT_c|__CT_s))) +#define islower(c) (!!(__CT(c)&__CT_l)) +#define isprint(c) (!(__CT(c)&__CT_c)) +#define ispunct(c) (!!(__CT(c)&__CT_p)) +#define isspace(c) (!!(__CT(c)&__CT_s)) +#define isupper(c) (!!(__CT(c)&__CT_u)) +#define isxdigit(c) (!!(__CT(c)&__CT_x)) #endif /* __CTYPE_H */ |