[bugfix] Update SimplexBuilder.cxx to fix #6775

[andriish]

Should fix #6775

[phsft-bot]

Can one of the admins verify this patch?

[guitargeek]

@phsft-bot build

[phsft-bot]

Starting build on ROOT-debian10-i386/cxx14, ROOT-performance-centos8-multicore/default, ROOT-ubuntu16/nortcxxmod, ROOT-ubuntu2004/soversion, mac1015/python3, mac11/cxx17, windows10/cxx14
How to customize builds

[phsft-bot]

Build failed on ROOT-performance-centos8-multicore/default.
Running on olbdw-01.cern.ch:/data/sftnight/workspace/root-pullrequests-build
See console output.

Errors:

• [2022-05-02T11:01:01.232Z] -- VDT install command succeeded. See also /data/sftnight/workspace/root-pullrequestsCMake Error at XROOTD-stamp/XROOTD-download-Release.cmake:49 (message):

[phsft-bot]

Build failed on ROOT-debian10-i386/cxx14.
Running on pcepsft10.dyndns.cern.ch:/build/workspace/root-pullrequests-build
See console output.

Errors:

• [2022-05-02T11:02:26.454Z] CMake Error at XROOTD-stamp/XROOTD-download-Release.cmake:49 (message):

[phsft-bot]

Build failed on ROOT-ubuntu2004/soversion.
Running on root-ubuntu-2004-1.cern.ch:/home/sftnight/build/workspace/root-pullrequests-build
See console output.

Errors:

• [2022-05-02T11:02:51.515Z] FAILED: builtins/xrootd/XROOTD-prefix/src/XROOTD-stamp/XROOTD-download
• [2022-05-02T11:02:51.515Z] CMake Error at XROOTD-stamp/XROOTD-download-Release.cmake:49 (message):

[phsft-bot]

Build failed on ROOT-ubuntu16/nortcxxmod.
Running on sft-ubuntu-1604-1.cern.ch:/build/workspace/root-pullrequests-build
See console output.

Errors:

• [2022-05-02T11:02:42.556Z] FAILED: cd /mnt/build/workspace/root-pullrequests-build/build/builtins/xrootd/XROOTD-prefix/src && /usr/bin/cmake -P /mnt/build/workspace/root-pullrequests-build/build/builtins/xrootd/XROOTD-prefix/src/XROOTD-stamp/XROOTD-download-Release.cmake && /usr/bin/cmake -E touch /mnt/build/workspace/root-pullrequests-build/build/builtins/xrootd/XROOTD-prefix/src/XROOTD-stamp/XROOTD-download
• [2022-05-02T11:02:42.556Z] CMake Error at XROOTD-stamp/XROOTD-download-Release.cmake:49 (message):

[phsft-bot]

Build failed on mac11/cxx17.
Running on macphsft23.dyndns.cern.ch:/Users/sftnight/build/workspace/root-pullrequests-build
See console output.

Errors:

• [2022-05-02T11:06:38.911Z] FAILED: builtins/xrootd/XROOTD-prefix/src/XROOTD-stamp/XROOTD-download /Users/sftnight/build/workspace/root-pullrequests-build/build/builtins/xrootd/XROOTD-prefix/src/XROOTD-stamp/XROOTD-download
• [2022-05-02T11:06:38.911Z] CMake Error at XROOTD-stamp/XROOTD-download-Release.cmake:49 (message):

[phsft-bot]

Build failed on windows10/cxx14.
Running on null:C:\build\workspace\root-pullrequests-build
See console output.

Errors:

• [2022-05-02T11:10:36.255Z] CMake Error at C:/build/workspace/root-pullrequests-build/rootspi/jenkins/root-build.cmake:1083 (message):

[phsft-bot]

Build failed on mac1015/python3.
Running on macitois22.dyndns.cern.ch:/Users/sftnight/build/workspace/root-pullrequests-build
See console output.

Errors:

• [2022-05-02T11:30:50.742Z] FAILED: builtins/xrootd/XROOTD-prefix/src/XROOTD-stamp/XROOTD-download /Volumes/HD2/build/workspace/root-pullrequests-build/build/builtins/xrootd/XROOTD-prefix/src/XROOTD-stamp/XROOTD-download
• [2022-05-02T11:30:50.742Z] CMake Error at XROOTD-stamp/XROOTD-download-Release.cmake:49 (message):

[guitargeek]

@phsft-bot build

[phsft-bot]

Starting build on ROOT-performance-centos8-multicore/soversion, ROOT-ubuntu2204/nortcxxmod, ROOT-ubuntu2004/python3, mac11/noimt, mac12arm/cxx20, windows10/default
How to customize builds

[guitargeek]

Thanks a lot for the fix! I'll merge this later when the CI is done.

I have updated the PR with a more sustainable fix that returns the minimum state early. Otherwise, there other undefined floating point behavior down the line.

[guitargeek]

@phsft-bot build

[phsft-bot]

Starting build on ROOT-performance-centos8-multicore/soversion, ROOT-ubuntu2204/nortcxxmod, ROOT-ubuntu2004/python3, mac11/noimt, mac12arm/cxx20, windows10/default
How to customize builds