wint_t __fputwc_unlocked(wchar_t c, FILE* f) {
char mbc[MB_LEN_MAX];
int l;
locale_t *ploc = &CURRENT_LOCALE, loc = *ploc;
if (f->mode <= 0)
fwide(f, 1);
*ploc = f->locale;
if (isascii(c)) {
c = putc_unlocked(c, f);
} else if (f->wpos + MB_LEN_MAX < f->wend) {
l = wctomb((void*)f->wpos, c);
if (l < 0)
c = WEOF;
else
f->wpos += l;
} else {
l = wctomb(mbc, c);
if (l < 0 || __fwritex((void*)mbc, l, f) < l)
c = WEOF;
}
if (c == WEOF)
f->flags |= F_ERR;
*ploc = loc;
return c;
}
size_t fwrite(const void *src, size_t size, size_t nmemb, FILE *f)
{
size_t k, l = size*nmemb;
if (!l) return l;
FLOCK(f);
k = __fwritex(src, l, f);
FUNLOCK(f);
return k==l ? nmemb : k/size;
}
