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. . [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)