Financial HP Calculator: Amortisation with Payments at begin of period

[Werner]

(06-06-2024 01:28 PM)Gil Wrote:  By the way, how do handle your different calculators models the case of rounding each intermediate result to the cent (2 RND)?

All of the built-in solvers (12C,17BII,Plus42) rely on the display mode (FIX 2) to round to 2 digits;
For my Gradual Payment Mortgage Amortisation equation, that won't work as there is no 'round to display mode' function, only RND(X: D) with D meaning to D places, absolute (D positive) or significant (D negative), so I just included an extra parameter D, and set that to 2 for rounding to cents or -12 for no rounding at all.

Cheers, Werner