Try Classical Error Estimation with BNCpack
Solving a 2nd, 3rd or 4th Degree Algebraic Equation
Version 0.02: 2008-02-24
README ->Japanese
CPU: Intel Xeon E5502 1.87GHz
OS: SUSE Linux Enterprise 11
GMP: Version 5.0.1, MPFR: Version 3.0.0
Written by Tomonori Kouya with GMP & MPFR