irwin.py 文件源码

def __init__(self, index):
        self.name = 'Irwin({})'.format(index)
        if index == 1:
            self.degree = 3
            data = [
                (fr(14, 48), _symm_s(1)),
                (-fr(1, 48), _symm_s_t(3, 1))
                ]
        else:
            assert index == 2
            self.degree = 5
            data = [
                (fr(889, 2880), _symm_s(1)),
                (-fr(98, 2880), _symm_s_t(3, 1)),
                (fr(5, 2880), _symm_s(3)),
                (fr(11, 2880), _symm_s_t(5, 1)),
                ]

        self.points, self.weights = untangle(data)
        self.weights *= 4
        return