Module: Rical

Extended by:
Rical
Included in:
Rical
Defined in:
lib/rical.rb,
lib/rical/errors.rb,
lib/rical/version.rb

Defined Under Namespace

Classes: NoConvergenceError

Constant Summary collapse

VERSION = 
'1.2.1'

Instance Method Summary collapse

Instance Method Details

#inverse_for(f:, fargs: nil, y: 0.0, **args) ⇒ Object Also known as: inv_for 



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# File 'lib/rical.rb', line 24

def inverse_for f:, fargs: nil, y: 0.0, **args
  f_1 = compute_f_1 f, fargs, y
  root_for f: f_1, fargs: fargs, **args
end

#root_for(f:, fargs: nil, df: nil, dfargs: nil, x0: 0.0, x1: 1.0, method:, num: 100, err: 1e-6) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/rical.rb', line 7

def root_for f:, fargs: nil,
             df: nil, dfargs: nil,
             x0: 0.0, x1: 1.0, method:, num: 100, err: 1e-6
  raise ArgumentError, 'f must respond_to call'    unless f.respond_to? :call

  case method
  when :n, :newton, :newton_raphson
    raise ArgumentError, 'df is required'          unless df
    raise ArgumentError, 'df must respond_to call' unless df.respond_to? :call
    newton_raphson_root_for f, fargs, df, dfargs, Float(x0), num, err
  when :s, :sec, :secant
    secant_root_for f, fargs, Float(x0), Float(x1), num, err
  else
    raise ArgumentError, 'unexpected method (allowed :newton, :secant)'
  end
end