Re: [Rd] chi-squared with zero df (PR#10551)

2008-01-07 Thread maechler
> "MM" == Martin Maechler <[EMAIL PROTECTED]> > on Mon, 7 Jan 2008 09:50:15 +0100 (CET) writes: > "JL" == Jerry Lewis <[EMAIL PROTECTED]> > on Mon, 7 Jan 2008 05:20:23 +0100 (CET) writes: JL> Full_Name: Jerry W. Lewis JL> Version: 2.6.1 JL> OS: Windows XP Pro

Re: [Rd] chi-squared with zero df (PR#10551)

2008-01-07 Thread maechler
> "JL" == Jerry Lewis <[EMAIL PROTECTED]> > on Mon, 7 Jan 2008 05:20:23 +0100 (CET) writes: JL> Full_Name: Jerry W. Lewis JL> Version: 2.6.1 JL> OS: Windows XP Professional JL> Submission from: (NULL) (24.147.191.250) JL> pchisq(0,0,ncp=lambda) returns 0 instead o

[Rd] chi-squared with zero df (PR#10551)

2008-01-06 Thread Jerry . Lewis
Full_Name: Jerry W. Lewis Version: 2.6.1 OS: Windows XP Professional Submission from: (NULL) (24.147.191.250) pchisq(0,0,ncp=lambda) returns 0 instead of exp(-lambda/2) pchisq(x,0,ncp=lambda) returns NaN instead of exp(-lambda/2)*(1 + SUM_{r=0}^infty ((lambda/2)^r / r!) pchisq(x, df + 2r)) qchi