/* towlower( wint_t )

   This file is part of the Public Domain C Library (PDCLib).
   Permission is granted to use, modify, and / or redistribute at will.
*/

#include <wctype.h>
#ifndef REGTEST
#include <_PDCLIB_locale.h>

wint_t _PDCLIB_towlower_l( wint_t wc, locale_t l )
{
    wint_t uwc = _PDCLIB_unpackwint( wc );
    _PDCLIB_wcinfo_t *info = _PDCLIB_wcgetinfo( l, uwc );
    if( info && info->lower != uwc ) 
    {
        wc = info->lower;
    }
    return wc;
}

wint_t towlower( wint_t wc )
{
    return _PDCLIB_towlower_l( wc, _PDCLIB_threadlocale() );
}

#endif

#ifdef TEST
#include <_PDCLIB_test.h>

int main( void )
{
    TESTCASE(towlower(0) == 0);
    TESTCASE(towlower(L'a') == L'a');
    TESTCASE(towlower(L'B') == L'b');
    TESTCASE(towlower(L'0') == L'0');

    return TEST_RESULTS;
}
#endif