Round to the nearest integer, rounding halfway cases to an even integer. For example: f(-0.5) = 0, f(0.5) = 0, f(1.5) = 2, f(2.5) = 2.
See Implementation
Round to the nearest integer, rounding halfway cases to an even integer. For example: f(-0.5) = 0, f(0.5) = 0, f(1.5) = 2, f(2.5) = 2.