Puppet Function: abs

Defined in:
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)


5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
# File 'modules/stdlib/lib/puppet/parser/functions/abs.rb', line 5

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

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

  value = arguments[0]

  # Numbers in Puppet are often string-encoded which is troublesome ...
  if value.is_a?(String)
    if value =~ %r{^-?(?:\d+)(?:\.\d+){1}$}
      value = value.to_f
    elsif value =~ %r{^-?\d+$}
      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