Linux; latest Windows version: 1 November 2011). In an earlier version, called FFermat (Float Fermat), the basic number type is floating point numbers of 18 digits. That version allows for numerical computing techniques, has extensive graphics capabilities, no sophisticated polynomial gcd algorithms, and is available only for Mac OS 9. Fermat was originally written in Pascal for a DEC VAX, then for the classic Mac OS during 1985–1996. It was ported to Microsoft Windows in 1998. In 2003 it was translated into C and ported to Linux (Intel machines) and Unix (Sparc/Sun). It is about 98,000 lines of C code. The FFermat and (old) Windows Fermat Pascal source code have been made available to the public under a restrictive license. The manual was extensively revised and updated on 25 July 2011 (latest small revision in June 2016, apparently another revision on 25 March 2020). See also Comparison of computer algebra systems External links Windows Fermat Pascal source code Float Fermat Pascal source code Robert H. Lewis at academia.edu C (programming language) software Computer algebra system software for Linux Computer algebra systems Proprietary freeware for Linux