Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.0.rc.2)
// Compass (v1.0.0.alpha.17)
// ----

@mixin log($comment, $value: null) {
	@if $value == null {
		/* #{$comment}	*/
	} @else {
		/* #{$comment}:#{$value}	*/
	}
}
//------------testing
@function lower-bound($range) {
  @if length($range) <= 0 {
    @return 0;
  }
  @return nth($range, 1);
}


@function upper-bound($range) {
  @if length($range) < 2 {
    @return 999999999999;
  }
  @return nth($range, 2);
}

$x: (21, 434, 13);


@include log(upper-bound($x));

$rem-base: 16px;
@function strip-unit($num) {
  @return $num / ($num * 0 + 1);
}

@function convert-to-rem($value, $base-value: $rem-base)  {
  $value: strip-unit($value) / strip-unit($base-value) * 1rem;
  @if ($value == 0rem) { $value: 0; } // Turn 0rem into 0
  @return $value;
}

@function rem-calc($values, $base-value: $rem-base) {
  $max: length($values);

  @if $max == 1 { @return convert-to-rem(nth($values, 1), $base-value); }

  $remValues: ();
  @for $i from 1 through $max {
    $remValues: append($remValues, convert-to-rem(nth($values, $i), $base-value));
  }
  @return $remValues;
}

@include log(strip-unit(16px));

@include log(convert-to-rem(34));

SassMeister-output.css

/* 434	*/
/* 16	*/
/* 2.125rem	*/