POSTUN

/bin/sh

if [ $1 -eq 0 ]; then
    update-alternatives --remove atlas /usr/lib64/atlas-sse2
    /sbin/ldconfig
fi

POSTTRANS

/bin/sh

update-alternatives							\
    --install /usr/lib64/atlas atlas /usr/lib64/atlas-sse2 2		\
    --slave /etc/ld.so.conf.d/atlas.conf atlas-conf /usr/lib64/atlas-sse2/atlas.conf
/sbin/ldconfig