FLINT3.7.0-dev

arb_hypgeom_chi

Synopsis#include <flint/arb_hypgeom.h>
void arb_hypgeom_chi(arb_t res, const arb_t z, slong prec)source

Sets res to the hyperbolic cosine integral Chi⁡(z)=γ+log⁡z+∫0z(cosh⁡(t)−1)/t dt\operatorname{Chi}(z) = \gamma + \log z + \int_0^z (\cosh(t) - 1)/t \, dt for z>0z > 0. The result is indeterminate unless zz is positive. Wrapper of acb_hypgeom_chi.

Cite this page

The FLINT team, “arb_hypgeom_chi (arb_hypgeom.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/arb_hypgeom/arb_hypgeom_chi.html (generated 2026-11-02).