int_fast64_t
CHECK_STYPE(int_fast64_t, INT_FAST64);
SNPRINTF_TEST("0", "%wf64d", (int_fast64_t)0);
SNPRINTF_TEST("-9223372036854775808", "%wf64d", (int_fast64_t)LLONG_MIN);
SNPRINTF_TEST("9223372036854775807", "%wf64d", (int_fast64_t)LLONG_MAX);
SWPRINTF_TEST("0", "%wf64d", (int_fast64_t)0);
SWPRINTF_TEST("-9223372036854775808", "%wf64d", (int_fast64_t)LLONG_MIN);
SWPRINTF_TEST("9223372036854775807", "%wf64d", (int_fast64_t)LLONG_MAX);