rmuir commented on code in PR #12036:
URL: https://github.com/apache/lucene/pull/12036#discussion_r1056883193
##########
lucene/core/src/java/org/apache/lucene/geo/GeoUtils.java:
##########
@@ -205,13 +205,7 @@ static boolean within90LonDegrees(double lon, double
minLon, double maxLon) {
public static int orient(double ax, double ay, double bx, double by, double
cx, double cy) {
double v1 = (bx - ax) * (cy - ay);
double v2 = (cx - ax) * (by - ay);
- if (v1 > v2) {
- return 1;
- } else if (v1 < v2) {
- return -1;
- } else {
- return 0;
- }
+ return Double.compare(v1, v2);
Review Comment:
there's also a semantic difference in how we use them. e.g. we call
`orient(...) * orient(...) * orient(...)` which is not legal to do with the
return value of Double.compare, unless you truncate it with a Math.signum too.
Double.compare can return any negative/positive value including ones that, when
multiplied, would overflow to +/-Inf.
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