fftw3 from multimedia:libs project

For openSUSE Tumbleweed run the following as root:

zypper addrepo https://download.opensuse.org/repositories/multimedia:libs/openSUSE_Tumbleweed/multimedia:libs.repo
zypper refresh
zypper install fftw3

For openSUSE Slowroll run the following as root:

zypper addrepo https://download.opensuse.org/repositories/multimedia:libs/openSUSE_Slowroll/multimedia:libs.repo
zypper refresh
zypper install fftw3

For openSUSE Factory PowerPC run the following as root:

zypper addrepo https://download.opensuse.org/repositories/multimedia:libs/openSUSE_Factory_PowerPC/multimedia:libs.repo
zypper refresh
zypper install fftw3

For openSUSE Factory ARM run the following as root:

zypper addrepo https://download.opensuse.org/repositories/multimedia:libs/openSUSE_Factory_ARM/multimedia:libs.repo
zypper refresh
zypper install fftw3

For 15.6 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/multimedia:libs/15.6/multimedia:libs.repo
zypper refresh
zypper install fftw3

For 15.5 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/multimedia:libs/15.5/multimedia:libs.repo
zypper refresh
zypper install fftw3

For Backports SLE-15-SP6 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/multimedia:libs/Backports_SLE-15-SP6/multimedia:libs.repo
zypper refresh
zypper install fftw3