var bb Buffer
	bb.Grow(16 << 20)
	b.SetBytes(int64(bb.Available()))
	b.ReportAllocs()
	for i := 0; i < b.N; i++ {
		bb.Reset()
		b := bb.AvailableBuffer()
		b = b[:cap(b)] // use max capacity to simulate a large append operation
		bb.Write(b)    // should be nearly infinitely fast
	}

(and similarly for <code>max</code>).
If all arguments are constant, the result is constant.
</p>

<pre>
var x, y int
m := min(x)                 // m == x
m := min(x, y)              // m is the smaller of x and y
m := max(x, y, 10)          // m is the larger of x and y but at least 10
c := max(1, 2.0, 10)        // c == 10.0 (floating-point kind)
f := max(0, float32(x))     // type of f is float32