redcas.solve: Class '"redcas.solve"'

In redcas: An Interface to the Computer Algebra System 'REDUCE'

Class "redcas.solve"

Description

Contains the inputs and outputs of a call to the function redSolve which executes the REDUCE solve operator to determine solutions to a system of algebraic equations.

Usage

redcas.solve(...)

Arguments

...	see section Slots for details.

Objects from the Class

Objects are created by calls to the function redSolve and can be used as input to the print method.

Slots

.Data:

Object of class "list" containing the actual data.

solutions:

Object of class "list" containing a character vector for each solution of the system of equations. The character vectors have a named element for each unknown with the name being the unknown and the value being the value of the unknown for the solution. This is essentially a copy of the list returned by the REDUCE solve operator.

rsolutions:

Object of class "list" containing a list for each solution converted to appropriate R types where possible. A vector will not suffice because the values of the unknowns may be of different types: integer, real, complex or expression. Explicit real and complex numbers are always converted. If the REDUCE switch ROUNDED is off, real and complex numbers may be expressions and may result in errors or NaN if conversion were attempted.

nsolutions:

Object of class "numeric". The number of solutions

rc:

Object of class "numeric". Return code from the redSolve call: 0 is success and 1 failure.

root_of:

Object of class "complex". A solution may express one or more unknowns in terms of the roots of another equation. In this case the other equation is enclosed in root_of(). This slot is a complex vector with the real part identifying the solution contain root_of() and the imaginary part the index of the unknown in that solution.

eqns:

Object of class "character". The system of equations provided to redSolve

unknowns:

Object of class "character". The unknowns provided to redSolve

switches:

Object of class "character". Any REDUCE switches set prior to executing the REDUCE solve function.

Extends

Class "list", from data part. Class "vector", by class "list", distance 2.

Methods

A print method, print, is defined.

Author(s)

Martin Gregory

See Also

redSolve is currently the only function using this class.

Examples

showClass("redcas.solve")

redcas documentation built on April 12, 2025, 1:40 a.m.