powershell function to convert SQL Server LSNs from hex to numeric or numeric to he

Convert-LSN.ps1

function Convert-LSN {
    <#
    .SYNOPSIS
        Converts Lsns betweent Hex and/or numeric formats

    .DESCRIPTION
        Function takes an LSN in either split Hexadecimal format () or numberic

        It then returns both formats in an object

    .PARAMETER LSN
        The LSN value to be converted

    .EXAMPLE
        PS C:\ $output = Convert-LSN -LSN 0000014:000000f3:0001

        Will return object $Output with the following value
        $Output.HexLSN = 0000014:000000f3:0001  
        $Output.NumbericLSN = 20000000024300001
    #>
    [CmdletBinding()]
    param(
        [string]$LSN
    )

    if ($LSN -match '^[a-fA-F0-9]{8}:[a-fA-F0-9]{8}:[a-fA-F0-9]{4}$') {
        Write-Verbose -Message 'Hexadecimal LSN passed in, converting to numeric'
        $sections = $LSN.Split(':')
        $sect1 = [System.Convert]::ToInt64($sections[0], 16).ToString()
        $sect2 = [System.Convert]::ToInt64($sections[1], 16).ToString().PadLeft(10, '0')
        $sect3 = [System.Convert]::ToInt64($sections[2], 16).ToString().PadLeft(5, '0')
        $Hexadecimal = $LSN
        $Numeric = $sect1 + $sect2 + $sect3

    } elseif ($LSN -match '^[0-9]{15}[0-9]+$') {
        Write-Verbose -Message 'Numeric LSN passed in, converting to Hexadecimal' 
        $sect1 = '{0:x}' -f [System.Convert]::ToString($LSN.Substring(0, $LSN.length-15), 16).PadLeft(8,'0')
        $sect2 = '{0:x}' -f [System.Convert]::ToString($LSN.Substring($lsn.length-14, 9), 16).PadLeft(8, '0')
        $sect3 = '{0:x}' -f [System.Convert]::ToString($LSN.Substring($lsn.length-5, 5), 16).PadLeft(4, '0')
        $Numeric = $LSN
        $Hexadecimal = $sect1 + ':' + $sect2 + ':' + $sect3
    } else {
        Write-Warning -Message 'LSN passed in is neither Numeric nor in the correct hexadecimal format'
        return
    }

    [PSCustomObject]@{
        Hexadecimal = $Hexadecimal
        Numeric     = $Numeric
    }
}