HP49-50G : tan(x) 50% faster than sin(x) or cos(x)

[RPNerd]

(09-04-2022 09:53 AM)Gil Wrote:  But using "your" formula for log(x), ie dividing ln(x) by 2.30258509299 [ln(10], the elapsed time is much longer than the direct use of the log command.

You're doing that by storing ln(10) as a constant, right? If you have to evaluate ln(10) each time then yes, of course, it's going to be much slower. Also don't forget that the division, as performed by the calculator internally, does not involve all the idiot filtering that constrains a keystroke RPN program.