Puppet Function: abs

Defined in:
puppet/modules/stdlib/lib/puppet/parser/functions/abs.rb
Function type:
Ruby 3.x API

Overview

abs() ⇒ Any

Returns the absolute value of a number, for example -34.56 becomes 34.56. Takes a single integer and float value as an argument.

Returns:

  • (Any) 


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# File 'puppet/modules/stdlib/lib/puppet/parser/functions/abs.rb', line 6

newfunction(:abs, :type => :rvalue, :doc => <<-EOS
  Returns the absolute value of a number, for example -34.56 becomes
  34.56. Takes a single integer and float value as an argument.
  EOS
) do |arguments|

  raise(Puppet::ParseError, "abs(): Wrong number of arguments " +
    "given (#{arguments.size} for 1)") if arguments.size < 1

  value = arguments[0]

  # Numbers in Puppet are often string-encoded which is troublesome ...
  if value.is_a?(String)
    if value.match(/^-?(?:\d+)(?:\.\d+){1}$/)
      value = value.to_f
    elsif value.match(/^-?\d+$/)
      value = value.to_i
    else
      raise(Puppet::ParseError, 'abs(): Requires float or ' +
        'integer to work with')
    end
  end

  # We have numeric value to handle ...
  result = value.abs

  return result
end