func TestPrime(t *testing.T) {
var f big.Int
for _, tc := range tcs {
if fs := prime.Factorial(&f, tc.n).String(); fs != tc.s {
t.Errorf("%d! incorrect. expected %s, got %s", tc.n, tc.s, fs)
}
}
}
func Benchmark1e5(b *testing.B) {
var f big.Int
for i := 0; i < b.N; i++ {
prime.Factorial(&f, 1e5)
}
}