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isxdigit | Function (Macro) |
ctype.h |
short isxdigit (short c); |
Checks whether a character is a hex digit.
isxdigit returns nonzero if c is a hexadecimal digit ('0' to '9', 'A' to 'F' or 'a' to 'f'), otherwise it returns zero. It is an inline function which is implemented using GNU C smart macros, which expands to a medium-sized code.