Generated by SassMeister.com, the Sass playground.

SassMeister-input.scss

// ---
// Sass (v3.2.9)
// ---


@mixin intern($v,$n:$n) {
    out: $v * $n;
}

@mixin test1($n){
    $v1: 1;
    $v2: 2;
    @include intern($v1);
}

@function str($n,$value:false) {
    @if $value { @return unquote('#{$n}; #{$value}: #{$n}px'); }
    @else { @return $n; }
}
.test {
    value: str(5rem, value);
}

SassMeister-output.css

.test {
  value: 5rem; value: 5rempx;
}