RE: HP48-HP50G : Error functions ERF(z), FRESNEL integrals, PROBIT, etc.

[John Keith]

That's a nice short program. I have been using similar programs that were posted years ago on comp.sys.hp48 by John H. Myers.

Code:


@ ERF
\<< DUP SQ 2. * 1. SWAP UTPC 1. - SWAP 0. >
  { NEG } IFT
\>>

Code:


@ ERFC
\<< DUP SQ 2. * 1. SWAP UTPC SWAP 0. <
  { 2. - NEG } IFT
\>>

Now if you happen to have a program for the inverse error function, I would be very interested.