Hi, I couldn't find the discontinuty of the hypergeometry graph. please, check the file hyperg.gif, Yours, Dan, Ho-Jin Stefan Koch wrote: >Hello, > >I'm a new user of the gsl-library. Everything works well. But when I tried >to look at the hypergeometric function, I recognized a discontinuity (jump) >in the graphic-drawing of the function. I think this should not be so. I >used the following code segment: > --snip