Is there a shorthand notation to $frac(x) = x - \lfloor x \rfloor $?

Question

In old Hewlet Packard calculators, it was common to have an int and a frac function, which were giving the integer and the fraction part of a number.

Nowadays, the floor function is quite common and noted $ \lfloor x \rfloor $ but to get fraction part, you usually need to compute it "by hand" by explicitly writing something like x - floor(x). I wondered if there existed some mathematical short hand notation for $frac(x) = x - \lfloor x \rfloor $.

Thank you.

Answer 1

As requested in the comments:

The standard notation for the fractional part of $x$ is $\{x\}$.