[PWGLF] Replace TMath::Abs with std::abs in etaChargeConditionFunc, add include

PWGLF/Utils/inelGt.h

@@ -1,4 +1,4 @@
 // Copyright 2019-2020 CERN and copyright holders of ALICE O2.
 // See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
 // All rights not expressly granted are reserved.
 //
@@ -14,7 +14,7 @@
 /// \since 07/05/2024
 /// \brief Utilities for counting charged particles in |eta| region and define the INEL > N selection in the MC at the generated level
 ///        Based on cascqaanalysis.cxx
 ///
 
 #ifndef PWGLF_UTILS_INELGT_H_
 #define PWGLF_UTILS_INELGT_H_
@@ -23,6 +23,7 @@
 
 #include "TParticlePDG.h"
 
+#include <cmath>
 #include <vector>
 
 namespace o2
@@ -41,7 +42,7 @@
 {
   // INEL > N (at least N+1 charged particles in |eta| < 1.0)
   EtaCharge etaCharge;
   std::vector<EtaCharge> ParticlesEtaAndCharge(particles.size());
   unsigned int nParticles = 0;
   for (const auto& particle : particles) {
     if (particle.isPhysicalPrimary() == 0) {
@@ -69,7 +70,7 @@
   ParticlesEtaAndCharge.resize(nParticles);
 
   auto etaChargeConditionFunc = [](EtaCharge elem) {
-    return ((TMath::Abs(elem.eta) < 1.0) && (TMath::Abs(elem.charge) > 0.001));
+    return ((std::abs(elem.eta) < 1.0) && (std::abs(elem.charge) > 0.001));
   };
 
   if (std::count_if(ParticlesEtaAndCharge.begin(), ParticlesEtaAndCharge.end(), etaChargeConditionFunc) > nChToSatisfySelection) {
@@ -113,7 +114,7 @@
         continue;
       }
       // is charged
       if (abs(p->Charge()) == 0) {
         continue;
       }
       // in acceptance
@@ -141,10 +142,10 @@
       }
       // is neutral
       if (requireNeutral) {
         if (std::abs(p->Charge()) > 1e-3)
           continue;
       } else {
         if (std::abs(p->Charge()) <= 1e-3)
           continue;
       }
       // in acceptance