.TH LIBSIMPLE_STRCASESTR 3 libsimple
.SH NAME
libsimple_strcasestr \- find a substring in a string

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

char *libsimple_strcasestr(const char *\fIhaystack\fP, const char *\fIneedle\fP);

#ifndef strcasestr
# define strcasestr libsimple_strcasestr
#endif
.fi
.PP
Link with
.IR \-lsimple .

.SH DESCRIPTION
The
.BR libsimple_strcasestr ()
function scans the string
.I haystack
the first occurrence of the substring
.IR needle .
.PP
The comparison is case-insensitive.

.SH RETURN VALUE
The
.BR libsimple_strcasestr ()
function returns the pointer
.I haystack
with a minimal offset such that
.I !*r
begins with
.IR needle ,
where
.I r
is the returned pointer.
If no such offset exists,
.B NULL
is returned.

.SH ERRORS
The
.BR libsimple_strcasestr ()
function 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_strcasestr ()
T}	Thread safety	MT-Safe
T{
.BR libsimple_strcasestr ()
T}	Async-signal safety	AS-Safe
T{
.BR libsimple_strcasestr ()
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 BUGS
None.

.SH SEE ALSO
.BR libsimple_strrcasestr (3),
.BR libsimple_strncasestr (3),
.BR libsimple_memcasemem (3),
.BR strstr (3)