On Friday, 23 March 2012 at 10:51:37 UTC, Don Clugston wrote: >> >> No, it's easy. Student t is in std.mathspecial. > > Aargh, I didn't get around to copying it in. But this should do > it. > > /** Inverse of Student's t distribution > * > [.....] Great!!! Thank you soo much Don!!! --jm