On Mon, Jun 12, 2017 at 2:03 PM, Bradley Lucier <xxxxxx@math.purdue.edu> wrote:

Upon successful completion, these functions shall return the arc tangent of y/ x in the range [π-,π] radians, using the signs of y and x to choose the correct quadrant for the result.

Adopted, with adjustments for the Scheme context.

--

John Cowan http://vrici.lojban.org/~cowan xxxxxx@ccil.org

When I wrote it I was more than a little febrile with foodpoisoning

from an antique carrot that I foolishly ate out of an illjudged faith

in the benignancy of vegetables. --And Rosta