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Simple implementation of the Newton-Raphson method for finding roots or
inverses of a function.
Indicates that the algorithm failed to converge due to one of the values
(either the candidate value, the function value or derivative value) being
an invalid double (NaN, Infinity or -Infinity) or other condition leading to
an overflow.
Represents a transaction for the purposes of computing the irregular rate
of return.
Calculates the irregular rate of return on a series of transactions.
Builder for
Xirr instances.