aix helper additions

no need to POWER cpu version helpers

accept ohai bittiness

README.md

@@ -82,6 +82,7 @@ API
 - `sparc?`
 - `ppc64?`
 - `ppc64le?`
+- `powerpc?`
 
 #### Examples
 ```ruby

lib/chef/sugar/architecture.rb

@@ -26,7 +26,7 @@ module Architecture
       #
       def _64_bit?(node)
         %w(amd64 x86_64 ppc64 ppc64le s390x ia64 sparc64 aarch64 arch64 arm64 sun4v sun4u)
-          .include?(node['kernel']['machine'])
+          .include?(node['kernel']['machine']) || ( node['kernel']['bits'] == '64' )
       end
 
       #
@@ -88,6 +88,16 @@ def ppc64le?(node)
         %w(ppc64le)
           .include?(node['kernel']['machine'])
       end
+
+      #
+      # Determine if the current architecture is PowerPC
+      #
+      # @return [Boolean]
+      #
+      def powerpc?(node)
+        %w(powerpc)
+          .include?(node['kernel']['machine'])
+      end
     end
 
     module DSL
@@ -111,6 +121,9 @@ def ppc64?; Chef::Sugar::Architecture.ppc64?(node); end
 
       # @see Chef::Sugar::Architecture#ppc64le?
       def ppc64le?; Chef::Sugar::Architecture.ppc64le?(node); end
+
+      # @see Chef::Sugar::Architecture#powerpc?
+      def powerpc?; Chef::Sugar::Architecture.powerpc?(node); end
     end
   end
 end

spec/unit/chef/sugar/architecture_spec.rb

@@ -14,6 +14,16 @@
       end
     end
 
+    it 'returns true when ohai provides the bittiness' do
+      node = { 'kernel' => { 'bits' => '64' } }
+      expect(described_class._64_bit?(node)).to be true
+    end
+
+    it 'returns false when ohai provides the bittiness' do
+      node = { 'kernel' => { 'bits' => '32' } }
+      expect(described_class._64_bit?(node)).to be false
+    end
+
     it 'returns false when the system is not 64 bit' do
       node = { 'kernel' => { 'machine' => 'i386' } }
       expect(described_class._64_bit?(node)).to be false
@@ -62,6 +72,12 @@
     end
   end
 
+  describe '#powerpc?' do
+    it 'returns true when the system is IBM POWER or powerpc' do
+      node = { 'kernel' => { 'machine' => 'powerpc' } }
+    end
+  end
+
   describe '#sparc?' do
     it 'returns true when the system is SPARC sun4u' do
       node = { 'kernel' => { 'machine' => 'sun4u' } }