Constant FRAC_1_SQRT_PI 

pub const FRAC_1_SQRT_PI: f128 = 0.564189583547756286948079451560772585844050629328998856844086_f128;

🔬This is a nightly-only experimental API. (f128 #116909)

Available on non-crate feature ferrocene_certified only.

1/sqrt(π)