FLINT3.7.0-dev

arb_fpwrap_double_lambertw, arb_fpwrap_cdouble_lambertw

Synopsis#include <flint/arb_fpwrap.h>
int arb_fpwrap_double_lambertw(double * res, double x, slong branch, int flags)source
int arb_fpwrap_cdouble_lambertw(complex_double * res, complex_double x, slong branch, int flags)source

Compute the Lambert W function on the given branch: for real input, branch must be 0 (the principal branch W_0) or -1 (W_{-1}); for complex input, any branch k (arb_lambertw, acb_lambertw).

Cite this page

The FLINT team, “arb_fpwrap_double_lambertw, arb_fpwrap_cdouble_lambertw (arb_fpwrap.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/arb_fpwrap/arb_fpwrap_double_lambertw.html (generated 2026-10-20).