diff options
Diffstat (limited to 'src/character.h')
| -rw-r--r-- | src/character.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/character.h b/src/character.h index 62d252e91ba..b073a0dd1e4 100644 --- a/src/character.h +++ b/src/character.h @@ -700,6 +700,24 @@ char_table_translate (Lisp_Object obj, int ch) return CHARACTERP (obj) ? XINT (obj) : ch; } +#if defined __GNUC__ && !defined __STRICT_ANSI__ +# define HEXDIGIT_CONST const +# define HEXDIGIT_IS_CONST true +#else +# define HEXDIGIT_CONST +# define HEXDIGIT_IS_CONST false +#endif +extern signed char HEXDIGIT_CONST hexdigit[]; + +/* If C is a hexadecimal digit ('0'-'9', 'a'-'f', 'A'-'F'), return its + value (0-15). Otherwise return -1. */ + +INLINE int +char_hexdigit (int c) +{ + return 0 <= c && c <= UCHAR_MAX ? hexdigit[c] : -1; +} + INLINE_HEADER_END #endif /* EMACS_CHARACTER_H */ |