(12C Platinum) Normal Distribution

[Albert Chan]

(12-01-2018 07:44 PM)Dieter Wrote:  

(12-01-2018 05:37 PM)Albert Chan Wrote:  Using x = 0 to 5 step 0.01, confirmed your claim of 1.2e-6 max rel. error ...

With exact coefficents it's even a tad less, about 1,10 E–6.
I like that it's "exact by design" for x=0. ;-)

I see it now.
Q(x = 0) = 1/2 * exp(0) = 1/2 (exactly)

Can you post the exact coefficients too ?

Edit: playing with the coefficients, I managed to lower max rel. errors to 1.12e-6

a1 = 0.433563
a2 = 0.084144052
a3 = -9.63659e-5
b1 = 2.4629583
b2 = 1.1328872
b3 = 0.2059062