Copyright (c) 2004 Tim J. Robbins
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.Dd December 19, 2022 .Dt ISSPECIAL 3 .Os .Sh NAME .Nm isspecial , .Nm isspecial_l .Nd special character test .Sh LIBRARY .Lb libc .Sh SYNOPSIS n ctype.h .Ft int .Fn isspecial "int c" .Ft int .Fn isspecial_l "int c" "locale_t loc" .Sh DESCRIPTION The .Fn isspecial and .Fn isspecial_l functions test for a special character.

p The .Fn isspecial_l function takes an explicit locale argument, whereas the .Fn isspecial function uses the current global or per-thread locale. .Sh RETURN VALUES The .Fn isspecial and .Fn isspecial_l functions return zero if the character tests false and return non-zero if the character tests true. .Sh COMPATIBILITY The x 4.4 extension of accepting arguments outside of the range of the .Vt "unsigned char" type in locales with large character sets is considered obsolete and may not be supported in future releases. The .Fn iswspecial or .Fn iswspecial_l function should be used instead. .Sh SEE ALSO .Xr ctype 3 , .Xr ctype_l 3 , .Xr iswspecial 3 , .Xr iswspecial_l 3 , .Xr xlocale 3 .Sh HISTORY The .Fn isspecial function appeared in x 4.4 .