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[skip-ci] TFormula doc fix #20397

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Nov 12, 2025
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[skip-ci] TFormula doc fix #20397

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8 changes: 4 additions & 4 deletions hist/hist/src/TFormula.cxx
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Expand Up @@ -120,25 +120,25 @@ std::string doubleToString(double val)
above also applies to the predefined parametrized functions like `gaus` and
`expo`.

Comparisons operators are also supported `(&&, ||, ==, <=, >=, !)`
Comparisons operators are also supported `(&&, ||, ==, <=, >=, !)`

Examples:

`sin(x*(x&lt;0.5 || x&gt;1))`
`sin(x*(x<0.5 || x>1))`

If the result of a comparison is TRUE, the result is 1, otherwise 0.

Already predefined names can be given. For example, if the formula

`TFormula old("old",sin(x*(x&lt;0.5 || x&gt;1)))`
`TFormula old("old",sin(x*(x<0.5 || x>1)))`

one can assign a name to the formula. By default the name of the object = title = formula itself.

`TFormula new("new","x*old")`

is equivalent to:

`TFormula new("new","x*sin(x*(x&lt;0.5 || x&gt;1))")`
`TFormula new("new","x*sin(x*(x<0.5 || x>1))")`

The class supports unlimited number of variables and parameters.
By default the names which can be used for the variables are `x,y,z,t` or
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