// builtin

@something: "hello world";
@color: #112233;
@color2: rgba(44,55,66, .6);

body {
	color: @something;

	@num: 7 / 6;
	num-basic: @num + 4;
	num-floor: floor(@num) + 4px;
	num-ceil: ceil(@num) + 4px;

	@num2: 2 / 3;
	num2: @num2;
	num2-round: round(@num2);
	num2-floor: floor(@num2);
	num2-ceil: ceil(@num2);

	round-lit: round(10px / 3);

	rgba1: rgbahex(@color);
	rgba2: rgbahex(@color2);
	argb: argb(@color2);
}


format {
  @r: 32;
  format: %("rgb(%d, %d, %d)", @r, 128, 64);
  format-string: %("hello %s", "world");
  format-multiple: %("hello %s %d", "earth", 2);
  format-url-encode: %('red is %A', #ff0000);
  eformat: e(%("rgb(%d, %d, %d)", @r, 128, 64));
}


#functions {
	str1: isstring("hello");
	str2: isstring(one, two);

	num1: isnumber(2323px);
	num2: isnumber(2323);
	num3: isnumber(4/5);
	num4: isnumber("hello");

	col1: iscolor(red);
	col2: iscolor(hello);
	col3: iscolor(rgba(0,0,0,0.3));
	col4: iscolor(#fff);

	key1: iskeyword(hello);
	key2: iskeyword(3D);

	px1: ispixel(10px);
	px2: ispixel(10);

	per1: ispercentage(10%);
	per2: ispercentage(10);

	em1: isem(10em);
	em2: isem(10);

	ex1: extract(1 2 3 4, 2);
	ex2: extract(1 2, 1);
	ex3: extract(1, 1);

	@list: 1,2,3,4;

	ex4: extract(@list, 2);

	pow: pow(2,4);
	pi: pi();
	mod: mod(14,10);

	tan: tan(1);
	cos: cos(1);
	sin: sin(1);

	atan: atan(1);
	acos: acos(1);
	asin: asin(1);

	sqrt: sqrt(8);
}


#unit {
	@unit: "em";
	unit-lit: unit(10px);
	unit-arg: unit(10px, "s");
	unit-arg2: unit(10px, @unit);
	unit-math: unit(0.07407s) * 100%;
}