HP calcs are really not that accurate..

[Gerson W. Barbosa]

(12-01-2017 09:09 PM)DA74254 Wrote:  In my opinion, there should be no reason that we should not have, say, at least 256 digits/decimal points accuracy. That goes for any device capable of doing "2+2”

We can take advantage of long integer numbers in Exact mode on the 49/49G+/50g to get extended accuracy at least for division operations.

For instance, evaluate the following program with ‘d’ (number of decimal places) as an argument.

« PUSH RAD -105 CF -3 CF DUP .653 * 1.74 + IP R→I DUP 2 MOD + DUP 4 * OVER DUPDUP 1 - 1
FOR i i SQ SWAP / PICK3 + ROT SWAP -1
STEP INV NIP UNROT + 1 - 3 0 UNROT
FOR i i INV i 2 - INV - + -4
STEP - 4 * EXPAND FXND DUP SIZE R→I ALOG OVER - PICK3 * SWAP IQUOT + →STR DUP HEAD -51 FC? { "." } { "," } IFTE + SWAP TAIL + 1 ROT 2 + SUB POP
»

On real hardware you should try low ‘d’ (15 or 20, never 256), unless you don’t mind waiting or draining up your battery set.