ISXDIGIT(3) BSD Library Functions Manual ISXDIGIT(3)NAMEisxdigit — hexadecimal-digit character test
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <ctype.h>
int
isxdigit(int c);
DESCRIPTION
The isxdigit() function tests for any hexadecimal-digit character. For
single C chars locales the value of the argument is representable as an
unsigned char or the value of EOF. In the ASCII character set, this
includes the following characters (with their numeric values shown in
octal):
060 ``0'' 061 ``1'' 062 ``2'' 063 ``3'' 064 ``4''
065 ``5'' 066 ``6'' 067 ``7'' 070 ``8'' 071 ``9''
101 ``A'' 102 ``B'' 103 ``C'' 104 ``D'' 105 ``E''
106 ``F'' 141 ``a'' 142 ``b'' 143 ``c'' 144 ``d''
145 ``e'' 146 ``f''
RETURN VALUES
The isxdigit() function returns zero if the character tests false and
returns non-zero if the character tests true.
SEE ALSOctype(3), ascii(7)STANDARDS
The isxdigit() function conforms to ISO/IEC 9899:1990 (“ISO C90”).
BSD June 4, 1993 BSD