fwide
extern int fwide(__FILE *, int);
using std::fwide;
TEST_UNCHANGED(fwide(f, 0));
TEST_NARROW(fwide(f, -1));
TEST_WIDE(fwide(f, 1));
if (!((r = fwide(f, 0)) < 0))
if (f != NULL && !((r = fwide(f, 0)) > 0))
if ((r = fwide(f, 0)) != 0)
if ((r = fwide(std, 0)) != 0)
if (!((r = fwide(f, 0)) op 0)) \
if (!((r = fwide(f, 0)) op 0)) \