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lang-tex
\NewDocumentCommand\SN{O{5} m}{\np{\fpeval{round(Phi(#2), #1)}}}(so\npfrom numprint is used in both cases for fair comparison) A bit to my surprise, it seemspdflatextakes about 5% more time with the l3fp code than with the xint one. Apart from that it seems\fpevaltrims trailing zero and I don't know how to reinject them.l3fpisn't know to be the fastest, it's known to be one of the most precise :) If you aim for speed consider rewriting the polynomial using Horner's method. If I do that for yourxintexprbased document compiling it takes 2.9s, while after sticking myl3fp-function into your\SNthe entire document took 1.7s. So in this casel3fpwas faster for this. Without Horner'sl3fptook 4.0s andxintexpronly 3.8s.