Changelog for giac-1.2.2-3.3.x86_64.rpm :

* Fri Jul 15 2016 avvissuAATTyandex.by- Fix postun scriptlet failed:
* use install_info_delete instead of info_del
* Sat Jan 02 2016 avvissuAATTyandex.ru- Update to 1.2.2:
* improved Groebner basis engine
* Fri Jun 05 2015 avvissuAATTyandex.ru- Initial release