for i := 0; i < b.N; i++ {
		Polar(complex(2.5, 3.5))
	}
}
func BenchmarkPow(b *testing.B) {
	for i := 0; i < b.N; i++ {
		Pow(complex(2.5, 3.5), complex(2.5, 3.5))
	}
}
func BenchmarkRect(b *testing.B) {
	for i := 0; i < b.N; i++ {
		Rect(2.5, 1.5)
	}
}
func BenchmarkSin(b *testing.B) {
	for i := 0; i < b.N; i++ {
		Sin(complex(2.5, 3.5))
	}
}