--- /dev/null
+#
+# is_float.rb
+#
+
+module Puppet::Parser::Functions
+ newfunction(:is_float, :type => :rvalue, :doc => <<-EOS
+Returns true if the variable passed to this function is a float.
+ EOS
+ ) do |arguments|
+
+ if (arguments.size != 1) then
+ raise(Puppet::ParseError, "is_float(): Wrong number of arguments "+
+ "given #{arguments.size} for 1")
+ end
+
+ value = arguments[0]
+
+ # Only allow Numeric or String types
+ return false unless value.is_a?(Numeric) or value.is_a?(String)
+
+ if value != value.to_f.to_s and !value.is_a? Float then
+ return false
+ else
+ return true
+ end
+
+ end
+end
+
+# vim: set ts=2 sw=2 et :