PowerShell Tip - Determine if the OS 64 bit in a consistent way

No frills...

Just wanted a consistent way of determining if the operating system was 32 or 64 bit regardless of PowerShell version or OS.

Function OSIs-64Bit{if([IntPtr]::Size-eq 4){$false}else{$true}}

Paste atop a script and use in an if statement like:
if(OSIs-64Bit){'Do some wicked stuff'}

Derived from comments in: https://social.technet.microsoft.com/Forums/lync/en-US/5dfeb3ab-6265-40cd-a4ac-05428b9db5c3/determine-32-or-64bit-os?forum=winserverpowershell