.TH LIBSIMPLE_STRNTOLOWER 3 libsimple
.SH NAME
libsimple_strntolower, libsimple_stpntolower \- convert a string to lower case

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

inline char *libsimple_strntolower(char *\fIdest\fP, const char *\fIsrc\fP, size_t \fIn\fP);
char *libsimple_stpntolower(char *\fIdest\fP, const char *\fIsrc\fP, size_t \fIn\fP);

#ifndef strntolower
# define strntolower libsimple_strntolower
#endif
#ifndef stpntolower
# define stpntolower libsimple_stpntolower
#endif
.fi
.PP
Link with
.IR \-lsimple .

.SH DESCRIPTION
The
.BR libsimple_strntolower ()
and
.BR libsimple_stpntolower ()
functions copies and covert a string, including the
NUL byte that terminates it, to lower case.
The string
.I src
is copied into
.IR dest ,
with all upper case ASCII characters converted to
lower case; however no more than
.I n
bytes will be copied or coverted. The arrays may overlap,
and there is an optimisation for the case where
.IR dest==src .

.SH RETURN VALUE
The
.BR libsimple_strntolower ()
function returns the pointer
.IR dest .
.PP
The
.BR libsimple_stpntolower ()
function returns the pointer
end of the string copied into
.IR dest ,
that is
.IR &dest[strnlen(src,n)] .

.SH ERRORS
The
.BR libsimple_strntolower ()
and
.BR libsimple_stpntolower ()
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_strntolower (),
.br
.BR libsimple_stpntolower ()
T}	Thread safety	MT-Safe
T{
.BR libsimple_strntolower (),
.br
.BR libsimple_stpntolower ()
T}	Async-signal safety	AS-Safe
T{
.BR libsimple_strntolower (),
.br
.BR libsimple_stpntolower ()
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
libsimple 1.1

.SH BUGS
None.

.SH SEE ALSO
.BR libsimple_strntoupper (3),
.BR libsimple_strnreplace (3),
.BR libsimple_strnntolower (3),
.BR libsimple_memntolower (3)