[math]::IEEERemainder((100/$PSItem),($PSItem/100))

Tonight's intellectual curiosity produces the charts below.

function XYZ {
-100..100 | % {
try {foreach ($i in [array[]]([math]::IEEERemainder((100/$PSItem),($PSItem/100)))) {[ordered]@{$PSItem=$($i.item(0))}}} `
catch [System.Management.Automation.RuntimeException] {}}
}


$hashdata=XYZ
Chart-hashdata splinerange 550 550 "Reverse Mirror Image Spline Range of [math]::IEEERemainder((100/`$PSItem),(`$PSItem/100))" "-100..100" "[math]::IEEERemainder((100/`$PSItem),(`$PSItem/100))"

rv hashdata
function XYZ {
-1000..1000 | % {
try {foreach ($i in [array[]]([math]::IEEERemainder((100/$PSItem),($PSItem/100)))) {[ordered]@{$PSItem=$($i.item(0))}}} `
catch [System.Management.Automation.RuntimeException] {}}
}

$hashdata=XYZ
Chart-hashdata splinerange 550 550 "Reverse Mirror Image Spline Range of [math]::IEEERemainder((100/`$PSItem),(`$PSItem/100))" "-100..100" "[math]::IEEERemainder((100/`$PSItem),(`$PSItem/100))"

rv hashdata
function XYZ {
-1000..1000 | % {
try {foreach ($i in [array[]]([math]::IEEERemainder((1000/$PSItem),($PSItem/1000)))) {[ordered]@{$PSItem=$($i.item(0))}}} `
catch [System.Management.Automation.RuntimeException] {}}
}

$hashdata=XYZ
Chart-hashdata splinerange 550 550 "Reverse Mirror Image Spline Range of [math]::IEEERemainder((1000/`$PSItem),(`$PSItem/1000))" "-1000..1000" "[math]::IEEERemainder((1000/`$PSItem),(`$PSItem/1000))"