[Rd] qchisq hang (PR#6421)

[maechler at stat.math.ethz.ch]

>>>>> "ThomasSt" == statho3  <statho3 at web.de>
>>>>>     on Wed,  7 Jan 2004 21:45:40 +0100 (CET) writes:

    ThomasSt> Full_Name: Thomas Stabla Version: 1.8.1 OS: Linux,
    ThomasSt> XP Submission from: (NULL) (80.136.67.200)


    ThomasSt> qchisq(1, df = 1, ncp = 0) seems to hang for me.

problem confirmed;  already for
	qchisq(1 - 1e-7, df = 1, ncp = 0)

Looking at the source code, the problem is "obvious".

The analogon on the tail (that hangs) is

	qchisq(1e-8, df = 1, ncp = 0, lower.tail = FALSE)

    ThomasSt> I tried R 1.7.1, R 1.8.1 and R-Devel 1.9.0 under
    ThomasSt> Linux (suse 8.0) and R 1.8.1 under XP