Add a round function to complement ceiling and floor

Author: npwalker

README.md

@@ -1509,6 +1509,10 @@ For example, `reject(['aaa','bbb','ccc','aaaddd'], 'aaa')` returns ['bbb','ccc']
 
 Reverses the order of a string or array.
 
+#### `stdlib::round`
+
+ Rounds a number to the nearest integer
+
 *Type*: rvalue.
 
 #### `rstrip`

functions/round.pp

@@ -0,0 +1,9 @@
+function stdlib::round(
+  Numeric $input,
+) {
+  if $input >= 0 {
+    Integer( $input + 0.5 )
+  } else {
+    Integer( $input - 0.5 )
+  }
+}

spec/functions/round_spec.rb

@@ -0,0 +1,11 @@
+require 'spec_helper'
+
+describe 'stdlib::round' do
+  it { is_expected.not_to eq(nil) }
+  it { is_expected.to run.with_params(34.3).and_return(34) }
+  it { is_expected.to run.with_params(-34.3).and_return(-34) }
+  it { is_expected.to run.with_params(34.5).and_return(35) }
+  it { is_expected.to run.with_params(-34.5).and_return(-35) }
+  it { is_expected.to run.with_params(34.7).and_return(35) }
+  it { is_expected.to run.with_params(-34.7).and_return(-35) }
+end