Plus Infinity:
                  %e: infinity
                  %f: infinity
                  %g: infinity
                  %E: INFINITY
                  %F: INFINITY
                  %G: INFINITY
Minus Infinity:
                  %e: -infinity
                  %f: -infinity
                  %g: -infinity
                  %E: -INFINITY
                  %F: -INFINITY
                  %G: -INFINITY
Not a number:
                  %e: nan
                  %f: nan
                  %g: nan
                  %E: NAN
                  %F: NAN
                  %G: NAN