lcondx: Compute Negative Log-Likelihood
In PatrickPfeifferDSc/bite: Bayesian Inference On Treatment Effects For Panel Data

Internal. Computes normal, conditional negative Loglikelihood for all x observations with treatment j

1	lcondx(jtrt, epsy, mu_xst, start_x, nx, start_y, sgmaj, rhoj)

`jtrt`	treatment j
`epsy`	residual vector of y ε = y - μ_y
`mu_xst`	mean vector of x*
`start_x`	Tmax x trt matrix, containing indicators for panel time - treatment combinations in data vector
`nx`	number of observations
`start_y`	Tmax x trt matrix, containing indicators for panel time - treatment combinations in outcome vector
`sgmaj`	variance under treatment j
`rhoj`	correlation coefficient under treatment j