pad_spa/node_modules/less/test/less-bom/calc.less

@val: 10px;
.no-math {
  @c: 10px + 20px;
  @calc: (@val + 30px);
  root: calc(100% - @c);
  root2: calc(100% - @calc);
  @var: 50vh/2;
  width: calc(50% + (@var - 20px));
  height: calc(50% + ((@var - 20px)));
  min-height: calc(((10vh)) + calc((5vh)));
  foo: 1 + 2 calc(3 + 4) 5 + 6;
  @floor: floor(1 + .1);
  bar: calc(@floor + 20%);
}

.b {
  @a: 10px;
  @b: 10px;

  one: calc(100% - ((min(@a + @b))));
  two: calc(100% - (((@a + @b))));
  three: calc(e('100%') - (3 * 1));
  four: calc(~'100%' - (3 * 1));
  nested: calc(calc(2.25rem + 2px) - 1px * 2);
}

.c {
  @v: 10px;
  height: calc(100% - ((@v * 3) + (@v * 2)));
}