~~NOTOC~~

====== clamp01 ======
clamp01(<-val)

===== Description =====
Clamps value between 0 and 1 and returns value.
If the value is negative then zero is returned. If value is greater than one then one is returned.
If the value is a vector, each element of the vector is clamped separately.

===== Examples =====
<code 4rpl>
trace(clamp01(42)) #prints '1'
</code>