internal System.bool rtfI( 
   System.double StfI,
   out System.int ttfI
)

Parameters

StfI

ttfI

Target Platforms: Windows 11, Windows 10, Windows 7, Windows Server 2019, Windows Server 2016, Windows Server 2012 R2, Windows Server 2012, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later)

Reference

NGrid Class
NGrid Members