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; }