Add a ceiling function to complement the floor function.

1 files changed, 25 insertions, 0 deletions

diff --git a/lib/puppet/parser/functions/ceiling.rb b/lib/puppet/parser/functions/ceiling.rb
new file mode 100644
index 0000000..5f3b10b
--- /dev/null
+++ b/lib/puppet/parser/functions/ceiling.rb
@@ -0,0 +1,25 @@
+module Puppet::Parser::Functions
+  newfunction(:ceiling, :type => :rvalue, :doc => <<-EOS
+    Returns the smallest integer greater or equal to the argument.
+    Takes a single numeric value as an argument.
+    EOS
+  ) do |arguments|
+
+    raise(Puppet::ParseError, "ceiling(): Wrong number of arguments " +
+          "given (#{arguments.size} for 1)") if arguments.size != 1
+
+    begin
+      arg = Float(arguments[0])
+    rescue TypeError, ArgumentError => e
+      raise(Puppet::ParseError, "ceiling(): Wrong argument type " +
+            "given (#{arguments[0]} for Numeric)")
+    end
+
+    raise(Puppet::ParseError, "ceiling(): Wrong argument type " +
+          "given (#{arg.class} for Numeric)") if arg.is_a?(Numeric) == false
+
+    arg.ceil
+  end
+end
+
+# vim: set ts=2 sw=2 et :