Search and Matching model Endogenous separation Walsh (2003)

[jpfeifer]

Usually, you simply work with the respective integrals in Dynare. After all, the paper assumes a lognormal distribution. See e.g.

Integral of this expression in dynare

For the uniform distribution, there is not. But here the formula should be straightforward to implement. For the normal distribution, Dynare provides commands like normcdf (see the manual).