[PWGCF] Added safeguards for pt fractions

[MaximVirta]

No description provided.

[github-actions]

O2 linter results: ❌ 0 errors, ⚠️ 0 warnings, 🔕 3 disabled

[alibuild]

Error while checking build/O2Physics/staging for 2607e02 at 2026-08-06 12:49:

## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:889:58: error: logical not is only applied to the left hand side of comparison [-Werror=logical-not-parentheses]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:889:111: error: logical not is only applied to the left hand side of comparison [-Werror=logical-not-parentheses]
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2Physics/code-check for c142a0d at 2026-08-06 13:17:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 4 errors and 61 warnings.'
Found 4 errors and 61 warnings.
++ [[ 4 -gt 0 ]]
++ cat /sw/BUILD/3fc4a9f83ae57147c869a431bcc3a62afc156fa4/O2Physics-code-check/errors.txt
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:70:1: error: included header utility is not used directly [misc-include-cleaner,-warnings-as-errors]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:1274:79: error: redundant explicit casting to the same type 'int64_t' (aka 'long') as the sub-expression, remove this casting [readability-redundant-casting,-warnings-as-errors]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:1299:79: error: redundant explicit casting to the same type 'int64_t' (aka 'long') as the sub-expression, remove this casting [readability-redundant-casting,-warnings-as-errors]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:1314:79: error: redundant explicit casting to the same type 'int64_t' (aka 'long') as the sub-expression, remove this casting [readability-redundant-casting,-warnings-as-errors]
++ [[ 61 -gt 0 ]]
++ cat /sw/BUILD/3fc4a9f83ae57147c869a431bcc3a62afc156fa4/O2Physics-code-check/warnings.txt
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:493:46: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:501:29: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:632:31: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:660:31: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:675:51: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:684:51: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:693:25: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:702:30: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:704:18: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:795:66: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:800:71: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:804:59: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:806:60: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:808:51: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:810:52: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:812:75: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:827:55: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:829:55: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:831:55: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:842:22: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:856:20: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:873:41: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:955:18: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:963:39: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:987:27: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:989:146: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:991:86: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:1013:102: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:1015:102: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:1017:102: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:1022:30: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:1024:13: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:1028:30: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:1030:13: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:1034:30: warning: statement should be inside braces [readability-braces-around-statements]
PWGCF/GenericFramework/Tasks/flowGfwV02.cxx:1036:13: warning: statement should be inside braces [readability-braces-around-statements]
[0 more errors; see full log]

Full log here.