mathru::special::error
pub fn erfcinv<T>(x: T) -> T where T: Real + Error,
Inverse complementary error function
\operatorname{erfc}^{-1}(1-z) = \operatorname{erf}^{-1}(z)
0 <= x <= 2.0
if x < 0.0 or x > 2.0
use mathru::special::error; let x: f64 = 1.0; let error: f64 = error::erfcinv(x);