Is there a mathematical operator to truncate negative values to zero?

notation

Solution 1:

I have seen the notation $z^+$ to denote $\max\{z,0\}$ in many papers and books. Analogously, $z^-$ to denote $-\min\{z,0\}$. Wikipedia uses that notation too.

EDIT (thanks to @rzippo) : Note that $z^-$ denotes the so-called negative part, which is non-negative. If we want a function that simply truncates positive values to zero, then we would need the function $f(z)=\min\{z,0\}$ (without the minus sign), for which I do not know any particular notation.

Solution 2:

How about adding the absolute value of the number to the number, and then dividing by 2. If the number is negative, the total will be zero, which divided by 2 is still zero. If the number is positive or zero, the result will be the number you began with.

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