Y-Cruncher/Custom Formulas/Pi - Ramanujan.cfg

//  y-cruncher Custom Formula File
//
//  This can be loaded directly from the Custom Compute menu or
//  entered from the command line as "custom:filename".
//
//      y-cruncher custom custom:"constant - algorithm"
//
//
//    Author:  Alexander J. Yee
//    Date:    September 29, 2018
//
//    Value: 3.14159265358979323846264338327950288419716939937510...
//
//    http://www.numberworld.org/y-cruncher/internals/binary-splitting-library.html#pi_ramanujan
//

{
    NameShort : "Pi"
    NameLong : "Pi"
    AlgorithmShort : "Ramanujan"
    AlgorithmLong : "Ramanujan (1910)"
    Formula : {
        Multiply : [
            {
                SeriesHypergeometric : {
                    Power : -1
                    CoefficientP : 1
                    CoefficientQ : 1103
                    CoefficientD : 9801
                    PolynomialP : [-3309 -54904 527636 -1231424 844480]
                    PolynomialQ : [0 0 0 3073907232]
                    PolynomialR : [-3 22 -48 32]
                }
            }
            {Invsqrt : 8}
        ]
    }
}