[GiNaC-devel] pseries::evalf() and pseries::eval()
Vladimir V. Kisil
kisilv at maths.leeds.ac.uk
Sun Sep 29 22:35:14 CEST 2019
Dear All,
GiNaC tutorial in section "2.2 What it can do for you" says
that Ginsh shall produce:
> series(tgamma(x),x==0,3);
x^(-1)-Euler+(1/12*Pi^2+1/2*Euler^2)*x+
(-1/3*zeta(3)-1/12*Pi^2*Euler-1/6*Euler^3)*x^2+Order(x^3)
> evalf(%);
x^(-1)-0.5772156649015328606+(0.9890559953279725555)*x
-(0.90747907608088628905)*x^2+Order(x^3)
However, with the current GiNaC versions the second output will be
identical to the first. I am attaching a small patch which shall
restore the expected output.
Best wishes,
Vladimir
--
Vladimir V. Kisil http://www.maths.leeds.ac.uk/~kisilv/
Book: Geometry of Mobius Transformations http://goo.gl/EaG2Vu
Software: Geometry of cycles http://moebinv.sourceforge.net/
Jupyter (Colab): https://github.com/vvkisil/MoebInv-notebooks
Jupyter (CodeOcean): https://codeocean.com/capsule/7952650/tree
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