Hi Tim, please find a patch attached that fixes. a) fixes for min-max-guideline violations (triggers if windows.h is include and NOMINMAX is not defined) b) some conversion warnings in the tests. Okay to commit? Yours, Jürgen -- * Dipl.-Math. Jürgen Hunold ! * voice: ++49 4257 300 ! Fährstraße 1 * fax : ++49 4257 300 ! 31609 Balge/Sebbenhausen * jhunold@gmx.eu ! Germany