diff options
Diffstat (limited to 'src/include/ctype.h')
-rw-r--r-- | src/include/ctype.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/include/ctype.h b/src/include/ctype.h new file mode 100644 index 0000000000..b4684af768 --- /dev/null +++ b/src/include/ctype.h @@ -0,0 +1,56 @@ +#ifndef CTYPE_H +#define CTYPE_H + +static inline int isspace(int c) +{ + switch (c) { + case ' ': case '\f': case '\n': + case '\r': case '\t': case '\v': + return 1; + default: + return 0; + } +} + +static inline int isprint(int c) +{ + return c >= ' ' && c <= '~'; +} + +static inline int isdigit(int c) +{ + return (c >= '0' && c <= '9'); +} + +static inline int isxdigit(int c) +{ + return ((c >= '0' && c <= '9') || + (c >= 'a' && c <= 'f') || + (c >= 'A' && c <= 'F')); +} + +static inline int isupper(int c) +{ + return (c >= 'A' && c <= 'Z'); +} + +static inline int islower(int c) +{ + return (c >= 'a' && c <= 'z'); +} + +static inline int toupper(int c) +{ + if (islower(c)) + c -= 'a'-'A'; + return c; +} + +static inline int tolower(int c) +{ + if (isupper(c)) + c -= 'A'-'a'; + return c; +} + +#endif /* CTYPE_H */ |