Change-Id: I3419d6247fbff36aa1ed5451bb3cfb7502c3d07e
Reviewed-on: https://go-review.googlesource.com/5030
Reviewed-by: David Crawshaw <crawshaw@golang.org>
// Nextafter returns the next representable float64 value after x towards y.
//
// Special cases are:
-// Nextafter64(x, x) = x
-// Nextafter64(NaN, y) = NaN
-// Nextafter64(x, NaN) = NaN
+// Nextafter(x, x) = x
+// Nextafter(NaN, y) = NaN
+// Nextafter(x, NaN) = NaN
func Nextafter(x, y float64) (r float64) {
switch {
case IsNaN(x) || IsNaN(y): // special case