Microarchitectures are listed in reverse chronological order of when they were introduced.

In the lib1305 distribution,
`command/lib1305-speed.c` measures lib1305;
`benchmarks/*-*` is the output of `lib1305-speed` on various machines;
and `autogen/md-speed` extracts the table from those measurements.
See the full output files
for differences between multiple measurements and the interquartile mean.
