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// If a native exponent function doesnt exist
// this one is needed.
@function ms-pow($Base, $Exponent) {
// Find and remove unit.
// Avoids messyness with unit calculations
$Unit: $Base * 0 + 1;
$Base: $Base/$Unit;
// This function doesnt support non-interger exponents.
// Warn the user about why this is breaking.
@if round($Exponent) != $Exponent {
@warn "Unfortunately, you need Compass to use non-integer exponents";
}
// Set up the loop, priming the return with the base.
$Return: $Base;
// If the number is positive, multiply it.
@if $Exponent > 0 {
// Basic feedback loop as exponents
// are recursivley multiplied numbers.
@for $i from 1 to $Exponent {
$Return: $Return * $Base;
}
}
// If the number is 0 or negitive
// divide instead of multiply.
@else {
// Libsass doesnt allow negitive values in loops
@for $i from (-1 + 1) to (abs($Exponent) + 1) {
$Return: $Return / $Base;
}
}
// Return is now compounded redy to be returned.
// Add the unit back onto the number.
@return $Return * $Unit;
}