ubasic
     
        yuji kida .
     
        an extension of basic for symbolic mathematics and number
        theory.
     
        ubasic supports bignums, fractions, complex numbers,
        polynomials and integer factorisation.  it runs under ms-dos
        and is written in assembly language.
     
        current version: 8.
     
        ftp://ftp.simtel.com/math/utk/software/msdos/number.theory/ubasic/.
     
        review, w.d. neumann, notices of ams 36 may/june 1989
     
        "a math-oriented high-precision basic", notices of the a.m.s,
        38 mar 1991.
     
        1992-07-06
     
     
see also:
basic symbolic mathematics number theory bignum ms-dos assembly language 
lt;ftp://ftp.simtel.com/math/utk/software/msdos/number.theory/ubasic/gt;