Rust, Fortran, and Ruby interfaces

The Fortran, and Ruby interfaces are expected to work at a certain level, but not supported as well as the Python interface.

Fortran interface

Fortran interface spglib.f90 is found in example directory. This fortran interface is originally contributed by Dimitar Pashov and has been updated by some other people. spglib_f.c is obsolete and is not recommended to use.

Rust interface

Rust interface contributed by Seaton Ullberg. The documentation is found at https://docs.rs/crate/spglib/.

Ruby interface

Note that this ruby interface was written in ancient times, so may not work with the recent ruby.

The ruby script symPoscar.rb in ruby directory reads a VASP POSCAR formatted file and finds the space-group type. The -l option refines a slightly distorted structure within tolerance specified with the -s option. The -o option gives the symmetry operations of the input structure.

% ruby symPoscar.rb POSCAR -s 0.1 -o -l

Some more options are shown with --help option:

% ruby symPoscar.rb --help

The way to compile the ruby module is explained in ruby/README.