put inline back in

Author: lrnv

ext/SpecialFunctionsChainRulesCoreExt.jl

@@ -320,7 +320,7 @@ end
 # the auxiliary variable f, the continued-fraction coefficients a_n, b_n, and
 # their partial derivatives w.r.t. p (≡ a) and q (≡ b). See Boik & Robinson-Cox (1999).
 
-function _Kfun(logx::T, log1mx::T, p::T, q::T, logbetapq::T) where {T}
+@inline function _Kfun(logx::T, log1mx::T, p::T, q::T, logbetapq::T) where {T}
     # K(x;p,q) = x^p (1-x)^{q-1} / (p * B(p,q)) computed in log-space for stability
     # logx = log(x), log1mx = log(1-x), precomputed
     return exp(p * logx + (q - 1) * log1mx - log(p) - logbetapq)