This package  the Gambit-C Scheme programming system.  Gambit-C
includes a Scheme interpreter and a Scheme compiler which can be used
to build standalone executables.  Because the compiler generates
portable C code it is fairly easy to port to any platform with a
decent C compiler.

The Gambit-C system conforms to the R4RS, R5RS and IEEE Scheme standards.
The full numeric tower is implemented, including: infinite precision
integers (bignums), rationals, inexact reals (floating point numbers),
and complex numbers.  Gambit-C supports a number of extensions to the
standards.  Please see the <https://gambitscheme.org/wiki/index.php/Main_Page>
for more information:  there is simply not enough room here to elaborate!