Fixed computation of phi angle difference

aferrero2707 · mcoquet642 · commit e90d37108b07 · 2026-07-09T14:13:14.000+02:00
diff --git a/PWGDQ/Tasks/global-muon-matcher.cxx b/PWGDQ/Tasks/global-muon-matcher.cxx
@@ -111,11 +111,11 @@ static float getDeltaPhi(float phi1, float phi2)
 {
   float dphi = phi1 - phi2;
   static constexpr float pi = TMath::Pi();
-  static constexpr float twopi = pi;
+  static constexpr float twopi = pi * 2.f;
   if (dphi > pi) {
     dphi -= twopi;
   }
-  if (dphi < pi) {
+  if (dphi < -pi) {
     dphi += twopi;
   }
   return dphi;

Original file line number	Diff line number	Diff line change
`@@ -111,11 +111,11 @@ static float getDeltaPhi(float phi1, float phi2)`
`111`	`111`	`{`
`112`	`112`	`float dphi = phi1 - phi2;`
`113`	`113`	`static constexpr float pi = TMath::Pi();`
`114`		`- static constexpr float twopi = pi;`
	`114`	`+ static constexpr float twopi = pi * 2.f;`
`115`	`115`	`if (dphi > pi) {`
`116`	`116`	`dphi -= twopi;`
`117`	`117`	`}`
`118`		`- if (dphi < pi) {`
	`118`	`+ if (dphi < -pi) {`
`119`	`119`	`dphi += twopi;`
`120`	`120`	`}`
`121`	`121`	`return dphi;`