[PWGCF] Fixed logic of multiplicity based selection in mixed events

[Preet-Bhanjan]

No description provided.

[github-actions]

O2 linter results: ❌ 0 errors, ⚠️ 0 warnings, 🔕 0 disabled

[alibuild]

Error while checking build/O2Physics/code-check for 4fcf97d at 2026-07-07 15:25:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 93 errors and 191 warnings.'
Found 93 errors and 191 warnings.
++ [[ 93 -gt 0 ]]
++ cat /sw/BUILD/1b0a31b84c3a7421844b7e1f03a1f6c3b8b035ee/O2Physics-code-check/errors.txt
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:68:78: error: macro argument should be enclosed in parentheses [bugprone-macro-parentheses,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:69:18: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:70:18: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:72:8: error: constructor does not initialize these fields: ccdb [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:103:71: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:158:59: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:213:35: error: initializer for member 'cstFT0RelGain' is redundant [readability-redundant-member-init,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:351:9: error: implicit conversion 'int' -> 'bool' [readability-implicit-bool-conversion,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:357:52: error: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:359:53: error: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:362:50: error: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:364:51: error: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:367:55: error: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:369:56: error: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:372:54: error: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:374:55: error: 'data' should be used for accessing the data pointer instead of taking the address of the 0-th element [readability-container-data-pointer,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:376:9: error: implicit conversion 'int' -> 'bool' [readability-implicit-bool-conversion,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:507:23: error: redundant call to 'c_str' [readability-redundant-string-cstr,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:516:11: error: variable 'cent' is not initialized [cppcoreguidelines-init-variables,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:843:27: error: the parameter 'track' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:854:10: error: variable 'isPion' is not initialized [cppcoreguidelines-init-variables,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:854:18: error: variable 'isKaon' is not initialized [cppcoreguidelines-init-variables,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:854:26: error: variable 'isProton' is not initialized [cppcoreguidelines-init-variables,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:865:7: error: do not use 'else' after 'return' [readability-else-after-return,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:906:40: error: redundant boolean literal supplied to boolean operator [readability-simplify-boolean-expr,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:909:23: error: do not use reinterpret_cast [cppcoreguidelines-pro-type-reinterpret-cast,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:919:43: error: redundant boolean literal supplied to boolean operator [readability-simplify-boolean-expr,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:922:26: error: do not use reinterpret_cast [cppcoreguidelines-pro-type-reinterpret-cast,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:932:46: error: redundant boolean literal supplied to boolean operator [readability-simplify-boolean-expr,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:994:29: error: the parameter 'tracks' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:1015:29: error: the parameter 'collision' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:1015:48: error: the parameter 'tracks' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:1043:35: error: the parameter 'track1' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:1045:5: error: switching on non-enum value without default case may not cover all cases [bugprone-switch-missing-default-case,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:1095:34: error: the parameter 'track1' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:1097:5: error: switching on non-enum value without default case may not cover all cases [bugprone-switch-missing-default-case,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:1147:39: error: the parameter 'tracks1' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:1150:24: error: narrowing conversion from 'Double_t' (aka 'double') to 'int' [bugprone-narrowing-conversions,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:1234:24: error: narrowing conversion from 'Double_t' (aka 'double') to 'int' [bugprone-narrowing-conversions,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:1278:33: error: the parameter 'tracks1' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:1278:55: error: the parameter 'tracks2' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/corrFit.cxx:1281:24: error: narrowing conversion from 'Double_t' (aka 'double') to 'int' [bugprone-narrowing-conversions,-warnings-as-errors]
[0 more errors; see full log]

Full log here.