\lfloor \rfloor
The floor function, denoted by \lfloor \rfloor, represents the greatest integer less than or equal to a given number. It is used to round down a real number to the nearest integer.
Rounding down a positive decimal number to the nearest integer.
\lfloor 3.7 \rfloor = 3
Rounding down a negative decimal number to the nearest integer.
\lfloor -2.3 \rfloor = -3
Applying the floor function to an integer, which remains unchanged.
\lfloor 5 \rfloor = 5