Class LTF::Maxima
In: lib/ltf/maxima.rb
Parent: Object

Maxima wraps an IO object to communicate with an external Maxima process.

Methods

initial_setup   new   puts   quit   read_to_input   solve   strip_response  

Classes and Modules

Class LTF::Maxima::Error
Class LTF::Maxima::Inconsistent
Class LTF::Maxima::InvalidInput
Class LTF::Maxima::Reader
Class LTF::Maxima::TooManyEquations
Class LTF::Maxima::TooManyUnknowns

Constants

MaximaWait = 0.00001
ValidInputPattern = /^[^;]+;$/
OutputPromptPattern = /^\(\%o\d+\) (.*)\n/m
InconsistentPattern = /^Inconsistent equations/
TooManyUnknownsPattern = /^More unknowns than equations/
TooManyEquationsPattern = /^More equations than unknowns/
SolvedVariablePattern = /([^,\[\d\s]\w*) = ([^,\]]+)/

Attributes

last_response  [R] 

Public Class methods

new(max_input = nil)

Create a new Maxima object. Raises a MaximaError if Maxima could not be run. Raises InvalidInput if max_input is invalid.

  • max_input: Initial input to send to Maxima.

Private Class methods

strip_response(str)

Strip the response out of the read string. Raises Inconsistent if inconsistent input was given. Raises Invalid if invalid input was given.

  • str: The string containing the response.

Public Instance methods

puts(str)

Send an input string to Maxima.

quit()

Send the quit command to Maxima.

solve(solver_string)

Solve a system of equations, returning a Hash of Symbol variable names and their values. Raises Maxima::TooManyUnknowns or Maxima::TooManyEquations if the solver string is invalid.

Private Instance methods

initial_setup(max_input = nil)

Setup initial Maxima settings, and possibly send an initial input string.

  • max_input: Initial input to send to Maxima, nil for none.
read_to_input()

Return all text up to the current input prompt.

[Validate]