[Math] Remove ROOT::Math::digamma() function#21970
Merged
guitargeek merged 1 commit intoroot-project:masterfrom Apr 20, 2026
Merged
[Math] Remove ROOT::Math::digamma() function#21970guitargeek merged 1 commit intoroot-project:masterfrom
ROOT::Math::digamma() function#21970guitargeek merged 1 commit intoroot-project:masterfrom
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This function was introduced about 2 years ago as a quick fix to make `LnGamma` differentiable with Clad, but it was inconvenient because it depended on the external GSL library. Since vgvassilev/clad#1733, Clad natively implements a `digamma` function, so we can use this one now that we updated to Clad 2.3.
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This function was introduced about 2 years ago in #16747 as a quick fix to make
LnGammadifferentiable with Clad, but it was inconvenient because it depended on the external GSL library.Since vgvassilev/clad#1733, Clad natively implements a
digammafunction, so we can use this one now that we updated to Clad 2.3.