.TH LIBSIMPLE_STRTOLOWER 3 2018-11-25 libsimple
.SH NAME
libsimple_strtolower, libsimple_stptolower \- convert a string to lower case
.SH SYNOPSIS
.nf
#include <libsimple.h>

static inline char *libsimple_strtolower(char *\fIdest\fP, const char *\fIsrc\fP);
char *libsimple_stptolower(char *\fIdest\fP, const char *\fIsrc\fP);

#ifndef strtolower
# define strtolower libsimple_strtolower
#endif
#ifndef stptolower
# define stptolower libsimple_stptolower
#endif
.fi
.PP
Link with
.IR \-lsimple .
.SH DESCRIPTION
The
.BR libsimple_strtolower ()
and
.BR libsimple_stptolower ()
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. The arrays may overlap, and there is
an optimisation for the case where
.IR dest==src .
.SH RETURN VALUE
The
.BR libsimple_strtolower ()
function returns the pointer
.IR dest .
.PP
The
.BR libsimple_stptolower ()
function returns the pointer
end of the string copied into
.IR dest ,
that is
.IR &dest[strlen(src)] .
.SH ERRORS
The
.BR libsimple_strtolower ()
and
.BR libsimple_stptolower ()
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_strtolower (),
.br
.BR libsimple_stptolower ()
T}	Thread safety	MT-Safe
T{
.BR libsimple_strtolower (),
.br
.BR libsimple_stptolower ()
T}	Async-signal safety	AS-Safe
T{
.BR libsimple_strtolower (),
.br
.BR libsimple_stptolower ()
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_strtoupper (3),
.BR libsimple_strreplace (3),
.BR libsimple_strntolower (3),
.BR libsimple_memtolower (3)