beneroth changed the topic of #picolisp to: PicoLisp language | The scalpel of software development | Channel Log: https://libera.irclog.whitequark.org/picolisp | Check www.picolisp.com for more information
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<tankf33der> hi all
<tankf33der> abu[7]: can i use picolisp's fixedpoint math for science calculations ?
<abu[7]> Hi tankf33der! Why not?
<tankf33der> i thought fixedpoint only for finance calculations.
<tankf33der> precision issues and etc.
<abu[7]> I use it eg. in the flight simulator for physical (Newton) simulations
<tankf33der> i will try this calculation then
<tankf33der> lets see
<tankf33der> i want to get the same number
<abu[7]> high precision
<tankf33der> yeah
<abu[7]> Scale around 60, yes
<abu[7]> Will be a bit slow in Pil perhaps
<tankf33der> lets see
<abu[7]> For physical or engineering stuff I usually use (scl 6). It is precise enough and mostly fits into shortnums.
<tankf33der> abu[7]: Do you see the difference at the end? It's accumulated precision error.
<tankf33der> 669131 vs. 669676
<abu[7]> Yes, that't normal
<abu[7]> btw, the '1' is not needed
<abu[7]> (*/ 1 1.0
<abu[7]> also in (* 1.0 1)
<tankf33der> 10x
<abu[7]> ?
<abu[7]> Times 1 is a no-op
<tankf33der> thanks. committed
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