The ISC currently accepts either floating point expressions or
correct Maple syntax as input. However, for Maple syntax requiring too
long for evaluation, a timeout has been implemented.

Factors of ten (and decimal points) are ignored in the input: you should
check the results and rescale as required.
For example, see 1/640.

Related sites:

The Inverse Symbolic Calculator (ISC) uses a combination of lookup tables and integer relation algorithms in order to associate a closed form representation with a user-defined, truncated decimal expansion (written as a floating point expression). The lookup tables include a substantial data set compiled by S. Plouffe both before and during his period as an employee at CECM.

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# Inverse Symbolic Calculator

The Dev Team: Nathan Singer, Andrew Shouldice, Lingyun Ye,

Tomas Daske, Peter Dobcsanyi, Dante Manna, O-Yeat Chan, Jon Borwein