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.TH LIBSIMPLE_INCHRSET 3 libsimple
.SH NAME
libsimple_inchrset, libsimple_inchrcaseset \- the whether a character belongs to a set

.SH SYNOPSIS
.nf
#include <libsimple.h>

inline int libsimple_inchrset(int \fIc\fP, const char *\fIs\fP);
inline int libsimple_inchrcaseset(int \fIc\fP, const char *\fIs\fP);

#ifndef inchrset
# define inchrset libsimple_inchrset
#endif
#ifndef inchrcaseset
# define inchrcaseset libsimple_inchrcaseset
#endif
.fi
.PP
Link with
.IR \-lsimple .

.SH DESCRIPTION
The
.BR libsimple_inchrset ()
and
.BR libsimple_inchrcaseset ()
functions scans the string
.I s
for an occurence of the character
.I c
(it is converted to a
.BR char ),
and returns a value indicating whether it exists in the string,
the scan will always fail if
.I c
is the NUL byte.
.PP
The comparison is case-sensitive for the
.BR libsimple_inchrset ()
function, and case-insensitive for the
.BR libsimple_inchrcaseset ()
function.

.SH RETURN VALUE
The
.BR libsimple_inchrset ()
and
.BR libsimple_inchrcaseset ()
functions returns 1 if
.I c
is not the NUL byte but can be found in
.IR s ;
otherwise 0 is returned.

.SH ERRORS
The
.BR libsimple_inchrset ()
and
.BR libsimple_inchrcaseset ()
functions cannot fail.

.SH ATTRIBUTES
For an explanation of the terms used in this section, see
.BR attributes (7).
.TS
allbox;
lb lb lb
l l l.
Interface	Attribute	Value
T{
.BR libsimple_inchrset (),
.br
.BR libsimple_inchrcaseset ()
T}	Thread safety	MT-Safe
T{
.BR libsimple_inchrset (),
.br
.BR libsimple_strchrnul ()
T}	Async-signal safety	AS-Safe
T{
.BR libsimple_inchrset (),
.br
.BR libsimple_strchrnul ()
T}	Async-cancel safety	AC-Safe
.TE

.SH EXAMPLES
None.

.SH APPLICATION USAGE
None.

.SH RATIONALE
None.

.SH FUTURE DIRECTIONS
None.

.SH NOTES
None.

.SH HISTORY
.TS
allbox;
lb lb
l l.
Interface	History
T{
.BR libsimple_inchrset ()
T}	libsimple 1.0
T{
.BR libsimple_inchrcaseset ()
T}	libsimple 1.1
.TE

.SH BUGS
None.

.SH SEE ALSO
.BR libsimple_strcasechr (3),
.BR strchr (3)