A left floor delimiter that returns the largest integer less than or equal to a number in rounding operations.
Examples
Floor function notation
\lfloor x \rfloor = \text{largest integer } \leq x
Floor function example with specific value
\lfloor 3.7 \rfloor = 3
Floor function in an inequality
n \leq \lfloor \sqrt{n^2 + 1} \rfloor \leq n + 1