[hist] Always use maximum floating point precision in GetExpFormula
#19734
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In root-project#18194, an optional parameter to `TFormula::GetExpFormula()` was introduced, which can be used to customize the precision when putting parameters into the jitted code. However, I don't see the reason why wouldn't like to always print the floating point numbers with maximum precision, which is suggested in this commit. This is achieved using modern C++ functions, which are also not respecting the users locale setting, but instead use the classic C locale by default, which is what we need when generating code. Follows up on root-project#18194 (and its partial revert root-project#18216). Closes root-project#17225. Replaces root-project#17327.
Test Results 21 files 21 suites 3d 15h 33m 30s ⏱️ For more details on these failures, see this check. Results for commit 9d4425e. |
ferdymercury
approved these changes
Aug 25, 2025
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In #18194, an optional parameter to
TFormula::GetExpFormula()was introduced, which can be used to customize the precision when putting parameters into the jitted code.However, I don't see the reason why wouldn't like to always print the floating point numbers with maximum precision, which is suggested in this commit.
This is achieved using modern C++ functions, which are also not respecting the users locale setting, but instead use the classic C locale by default, which is what we need when generating code.
Follows up on #18194 (and its partial revert #18216).
Closes #17225.
Replaces #17327.