Swift - llrint() Function

The Swift llrint() function returns an integral value by rounding up the specified number. If x falls exactly at the midway between two integers, the even integer is returned.

Syntax

In Foundation framework, it is defined as follows:

public func llrint(_ __x: Double) -> Int64

Parameters

Return Value

Returns the value of x which is first rounded to nearby integral value then casted to Int64 type. If x falls exactly at the midway between two integers, the even integer is returned.

Example:

In the example below, llrint() function is used to round the given number.

import Foundation

print("llrint(10.4) = \(llrint(10.4))")
print("llrint(10.6) = \(llrint(10.6))")
print("llrint(10.5) = \(llrint(10.5))")
print("llrint(11.5) = \(llrint(11.5))")
print("llrint(12.5) = \(llrint(12.5))")

The output of the above code will be:

llrint(10.4) = 10
llrint(10.6) = 11
llrint(10.5) = 10
llrint(11.5) = 12
llrint(12.5) = 12