Constant FRAC_1_SQRT_2PI
const FRAC_1_SQRT_2PI: f128 = 0.398942280401432677939946059934381874f128
1/sqrt(2π)
FRAC_1_SQRT_2PIconst FRAC_1_SQRT_2PI: f128 = 0.398942280401432677939946059934381874f128
1/sqrt(2π)