id	summary	reporter	owner	description	type	status	priority	milestone	component	resolution	keywords	cc	planetversion	pltversion
199	Bug in gamma-inc implementation and documentation	williams	williams	"Noel Welsh send the following:

The gamma-inc function in the science collection has an error:

In gamma-inc-impl.ss it reads:

(define (gamma-inc-F-CF a x)
 (define nmax 5000)
 (define small (exp double-epsilon 3))
 ...

That last function call should be expt, not exp.

The documentation for gamma-inc states

""Computes the normalized incomplete gamma function""

but the equation below that line corresponds to the *un*normalised
function. I compared the corrected function against Matlab and believe
it is correctly implementing the unnormalised function."	defect	closed	major		williams/science.plt			noelwelsh@…	(3 5)	4.2.1