Constant FRAC_1_SQRT_2PI

pub const FRAC_1_SQRT_2PI: f128 = 0.398942280401432677939946059934381868475858631164934657665926_f128; // 0.398942280401432677939946059934381874f128

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

1/sqrt(2π)