(maint) move/rewrite round() as ruby function

1 files changed, 33 insertions, 0 deletions

diff --git a/lib/puppet/parser/functions/round.rb b/lib/puppet/parser/functions/round.rb
new file mode 100644
index 0000000..489c301
--- /dev/null
+++ b/lib/puppet/parser/functions/round.rb
@@ -0,0 +1,33 @@
+#
+# round.rb
+#
+
+module Puppet::Parser::Functions
+  newfunction(:round, :type => :rvalue, :doc => <<-EOS
+  Rounds a number to the nearest integer
+
+  *Examples:*
+
+  round(2.9)
+
+  returns: 3
+
+  round(2.4)
+
+  returns: 2
+
+  EOS
+  ) do |args|
+
+    raise Puppet::ParseError, "round(): Wrong number of arguments given #{args.size} for 1" if args.size != 1
+    raise Puppet::ParseError, "round(): Expected a Numeric, got #{args[0].class}" unless args[0].is_a? Numeric
+
+    value = args[0]
+
+    if value >= 0
+      Integer(value + 0.5)
+    else
+      Integer(value - 0.5)
+    end
+  end
+end