swprintf vs wsprintf

TCHAR s[16];

wsprintf(s, L"wsprintf returns %3.2f", 123.03);

==> output: wsprintf return f

swprintf(s, L"swprintf returns %3.2f", 123.03);

==> output: swprintf returns 123.03

The wsprintf() is one of the windows API. It's not support  all format string.