test_clebsch_gordan.py 文件源码

def test_racah():
    assert racah(3,3,3,3,3,3) == Rational(-1,14)
    assert racah(2,2,2,2,2,2) == Rational(-3,70)
    assert racah(7,8,7,1,7,7, prec=4).is_Float
    assert racah(5.5,7.5,9.5,6.5,8,9) == -719*sqrt(598)/1158924
    assert abs(racah(5.5,7.5,9.5,6.5,8,9, prec=4) - (-0.01517)) < S('1e-4')