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

[Gil]

New version 14 e

Now 2 ways of calculating the Fresnel integrals Fresnel_S & Fresnel_C:

a) as in previous version, the normalzed form,
with always 1 single input:
- the function argument x (real) or z (complex) in level 1;

b) new, since this version 14e, the Not normalized version,
with then 2 inputs:
- the letter N in stack level 2 (with N for Not normalized)
- the function argument x (real) or z (complex) in l stack evel 1.