Method matmul

ot/backend.py:1476–1477

(self, a, b)

        return np.transpose(a, axes)

    def matmul(self, a, b):
        return np.matmul(a, b)

    def nan_to_num(self, x, copy=True, nan=0.0, posinf=None, neginf=None):
        return np.nan_to_num(x, copy=copy, nan=nan, posinf=posinf, neginf=neginf)