xref: /freebsd/lib/libc/locale/isspecial.3 (revision 02e9120893770924227138ba49df1edb3896112a)
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26.Dd December 19, 2022
27.Dt ISSPECIAL 3
28.Os
29.Sh NAME
30.Nm isspecial ,
31.Nm isspecial_l
32.Nd special character test
33.Sh LIBRARY
34.Lb libc
35.Sh SYNOPSIS
36.In ctype.h
37.Ft int
38.Fn isspecial "int c"
39.Ft int
40.Fn isspecial_l "int c" "locale_t loc"
41.Sh DESCRIPTION
42The
43.Fn isspecial
44and
45.Fn isspecial_l
46functions test for a special character.
47.Pp
48The
49.Fn isspecial_l
50function takes an explicit locale argument, whereas the
51.Fn isspecial
52function uses the current global or per-thread locale.
53.Sh RETURN VALUES
54The
55.Fn isspecial
56and
57.Fn isspecial_l
58functions return zero if the character tests false and
59return non-zero if the character tests true.
60.Sh COMPATIBILITY
61The
62.Bx 4.4
63extension of accepting arguments outside of the range of the
64.Vt "unsigned char"
65type in locales with large character sets is considered obsolete
66and may not be supported in future releases.
67The
68.Fn iswspecial
69or
70.Fn iswspecial_l
71function should be used instead.
72.Sh SEE ALSO
73.Xr ctype 3 ,
74.Xr ctype_l 3 ,
75.Xr iswspecial 3 ,
76.Xr iswspecial_l 3 ,
77.Xr xlocale 3
78.Sh HISTORY
79The
80.Fn isspecial
81function appeared in
82.Bx 4.4 .
83