def METHOD_NAME(self):
    a, bl = self.a, self.b
    df = self.df
    corr2 = self.corr2
    #from 0 to inf
    #print '0 inf'
    a2 = a.copy()
    a2[:] = -np.inf
    probmvn_R = 0.1666667 #error approx. 6.1e-08
    probmvt_R = 0.1666667 #error approx. 8.2e-08
    assert_almost_equal(probmvt_R, mvstdtprob(np.zeros(3), -a2, corr2, df), 4)
    assert_almost_equal(probmvn_R,
                        mvstdnormcdf(np.zeros(3), -a2, corr2,
                                     maxpts=100000, abseps=1e-5), 4)