Round to nearest integer.
	round(2.5)
| num | The input. | 
| return value | The input rounded to the nearest integer. | 
If the floating point part is greater or equal than .5, the number will be rounded to higher, otherwise to lower nearest integer value.
The argument can be a real or complex number or a matrix. In case of complex numbers, the real and imaginary parts are handled separately. In case of matrices, the computation is elementwise.
Quantities are not suppored by this function.
	round(2.4)