A User-Friendly Computation System on the Web with Octuple-precision

Computations with higher than the IEEE 754 standard double-precision (about 16 significant digits) are required recently. Although some software routines in Fortran or C for high-precision computation are available, users are required to implement such routines in their own computers with knowledges about high-precision computations. In this paper we show an user-friendly online system for octuple-precision computation we constructed. In our Web system users with no knowledges about high-precision computation can easily perform octuple-precision computations, by choosing mathematical functions with argument(s) inputted, by writing simple mathematical expression(s) or by uploading C program(s) as well as Fortran Program(s).